Circulatory System

Rajapova Muqaddas Umidbek qizi
Samarkand State Medical University
Faculty of Pediatrics, Group 112
Nurzodbekova Yasmina Nurzodbekovna
Samarkand State Medical University
Faculty of Pediatrics, Group 114
Rahimova Madina Mannonovna
Samarkand State Medical University
Department of Physiology, Trainee Assistant
madinarakhimova79@gmail.com

Abstract:
This article discusses one of the most important systems in the human body — the circulatory system. It is well known that this system affects all other systems, meaning that when the circulatory system is impaired, cells do not receive sufficient nutrients, and organ functions weaken.

Keywords: Epicardium, myocardium, endocardium, carbon dioxide, automatism, rib, clinical, atherosclerosis, hypertension, aneurysm, phlebothrombosis, varicose veins, thrombophlebitis.

Introduction:
The main function of the circulatory system in the human body is to deliver oxygen and nutrients to cells and to remove carbon dioxide and other waste products. This process is carried out through the coordinated functioning of the heart and blood vessels. The heart acts as a central pumping organ, while blood vessels distribute blood throughout the body and return it to the heart. This complex system remains in constant motion and functions steadily throughout
life.

Anatomical Structure of the Heart
The heart is a four-chambered, muscular, cone-shaped organ located in the central part of the chest cavity between the right and left lungs. It consists of the epicardium, myocardium, and endocardium.
Epicardium – the outer layer of the heart, covered by the pericardium.
Myocardium – the main and thickest layer of the heart wall, responsible for contraction.
Endocardium – a thin layer lining the inner surface of the heart chambers.
The heart has four chambers: right and left atria, and right and left ventricles.
Between the chambers are valves: mitral, tricuspid, aortic, and pulmonary valves.
Cardiac automatism is the ability of specialized cardiac cells to independently generate bioelectrical impulses that stimulate heart contractions.

Main Part
The heart is located in the thoracic cavity, slightly shifted to the left. Two-thirds of the heart lies to the left of the midline, and one-third to the right. Laterally and partially anteriorly, the heart is adjacent to the lungs, while its front part touches the sternum and rib cartilages.
Relative to the body’s midline, the heart is asymmetrically positioned: about two-thirds on the left and one-third on the right. Depending on the projection of the vertical axis, the heart may have transverse, oblique, or vertical positions.

A vertical position is more common in people with narrow and long chests, while a transverse position is more common in those with wide and short chests. In newborns, the heart is more vertical, rounded in shape, and located higher because the atria are larger and the ventricles are less developed. As a person approaches adulthood, the heart assumes its typical position.

The heart consists of four separate chambers:
Left atrium (atrium sinistrum)
Right atrium (atrium dextrum)
Left ventricle (ventriculus sinister)
Right ventricle (ventriculus dexter)
Diseases of the Circulatory System

Diseases of the vascular system are widespread and are associated with structural and functional disorders of blood vessels.
Arterial Diseases
Atherosclerosis: Accumulation of cholesterol plaques in vessel walls, narrowing blood flow. It is a major cause of heart attacks and strokes.
Arterial hypertension: Chronic elevation of blood pressure.
Aneurysm: Weakening and ballooning of the arterial wall, with a high risk of rupture.
Obliterating endarteritis: Inflammation and narrowing of leg arteries, often found in smokers.
Venous Diseases
Varicose veins: Dilation of veins due to valve dysfunction and blood stagnation.
Thrombophlebitis: Inflammation of vein walls with clot formation.
Phlebothrombosis (Deep vein thrombosis): Formation of clots in deep veins, which may cause pulmonary embolism.

Microcirculation and Other Disorders
Vasculitis: Inflammation of vessel walls due to immune reactions.
Raynaud’s syndrome: Sudden constriction of small blood vessels in fingers due to cold or stress.
Lymphedema: Impaired lymph drainage leading to swelling.

Main Causes of Cardiovascular Diseases
Physical inactivity (hypodynamia)
Unhealthy diet (fatty and salty foods)
Harmful habits (smoking and alcohol)
Genetic predisposition
Obesity and diabetes

Environmental Factors and Cardiovascular Health
The cardiovascular system is highly sensitive to environmental factors. Research shows that air pollution, sudden temperature changes, noise, stress, and harmful habits are major contributors to heart disease.

Fine particles such as PM2.5 and PM10 can cause narrowing of blood vessels and heart rhythm disorders. Cold weather increases blood pressure, while excessive heat disrupts fluid balance and increases the risk of thrombosis. Noise and stress raise cortisol levels, leading to cardiac strain and heart failure.

The socio-economic consequences of cardiovascular diseases affect patients, families, healthcare systems, and overall quality of life. About 60% of cardiovascular complications are associated with major risk factors such as smoking, alcohol abuse, insufficient intake of fruits and vegetables, and sedentary lifestyles. These factors contribute to obesity, hypertension, high blood sugar, and
high cholesterol levels. Studies conducted in Uzbekistan show that the prevalence of risk factors for non- communicable diseases is steadily increasing.

References

1.Jabborovich M. J. “Heart and Circulatory System: Structure, Mechanism, and
Physiological Importance.” Scientific Focus, 2025.
2.Turayevna E. S., Rashidkhan A. B. “Cardiovascular System: Heart Structure and Control.” Best Intellectual Research, 2025.
3.Abdullayev S. “Anatomical and Physiological Features of the Heart.” American Journal of Education and Learning, 2025.
4.Karimov J., Qodirova D. “Pathologies of the Vascular System.” Education News, 2026.
5.Valiyeva F., Tursunaliyeva H. “Care and Monitoring of Cardiovascular Patients.” Scientific Focus, 2026.
6.Ergasheva M. “Impact of Environmental Factors

Sometimes when one leaves, there is no return

I won’t live long enough to forget you,

Yet my heart will not stop beating without you.

These wounds you left behind won’t ever heal,

Sometimes when one leaves, there is no return.

If I ever long for your embrace,

If my heart still yearns for your fragrance,

Still, one learns to live no matter what—

Sometimes when one leaves, there is no return.

Tell me, why are you so distressed?

Why do questions keep scratching at your heart?

Leaving you was a sign of my destiny,

Sometimes when one leaves, there is no return.

Do not ever think that I will come back,

Do not lie saying you love me.

Do not wait for me, hoping I’ll arrive

Sometimes when one leaves, there is no return.

Husanxon Odilov

Uzbekistan

Cybersecurity: the visible consequences of an invisible war

In today’s digital age, humanity has achieved unprecedented convenience. With a single smartphone, we manage our bank accounts, access government services, work remotely, and even consult doctors. Yet behind these conveniences lies an invisible, silent, but dangerous battlefield — cyberspace. And on this battlefield, the struggle never stops.

Digital Trust in Crisis

Cybersecurity is no longer just a concern for programmers or IT specialists. It directly affects the daily lives of every citizen. A weak password, clicking on an unknown link, or carelessly sharing personal information can lead to serious consequences.

Globally, cybercrime is becoming increasingly sophisticated. It is no secret that hacker groups have brought even large corporations to their knees. For example, in 2017, the WannaCry virus shook the world by crippling the systems of thousands of organizations across hundreds of countries. This incident clearly demonstrated how costly negligence in cybersecurity can be.

Cyberwars: a new geopolitical front

Today, competition between states is no longer confined to land, water, or air — it also unfolds in virtual space. Cyberattacks have become tools of political pressure and weapons of economic sabotage.

For instance, the Stuxnet computer worm, discovered in 2010, entered history as one of the first large-scale cyberweapons targeting industrial infrastructure. It proved that a single command typed behind a keyboard can paralyze a factory, a power plant, or even an entire system in the real world.

This raises a simple yet profound question: if no war is officially declared, yet the electricity goes out, banking systems collapse, or data is stolen — what does that signify?

Social Media and Information Security

Cybersecurity is not only a technical issue. It is closely linked to information security. Fake news, manipulation, and data breaches influence public consciousness.

On social media, a single false report can reach millions of users within hours. As a result, trust erodes and social tension rises. Therefore, cybersecurity is not only about protecting servers — it is also about protecting society.

Uzbekistan and the Responsibility of a Digital Future

The digitalization process is rapidly advancing in Uzbekistan as well. E-government services, online payments, and distance learning systems are expanding. This elevates cybersecurity to the level of national security.

Today, from school students to entrepreneurs, everyone must know basic cyber hygiene principles:

Use strong and complex passwords

Enable two-factor authentication

Be cautious of suspicious links and files

Regularly update software and systems

Without a culture of cybersecurity, technological progress itself may become a source of risk.

Conclusion: The Choice Is Ours

Cyberspace is a field of opportunity. But with opportunities come risks. Carelessness in the digital world can cause real-life problems.

So the question is simple: do we use technology consciously, or do we become completely dependent on it?

Cybersecurity is not just an IT issue — it is a matter of collective awareness, culture, and responsibility in modern society. The invisible war has already begun. Victory in it depends on the awareness and responsibility of each of us.

Mamadaliyev Kamronbek 

THE IMPORTANCE OF PEDAGOGICAL COMPETENCE IN THE TEACHING PROFESSION

Abstract

This article provides a scientific and theoretical analysis of the essence and content of pedagogical competence in the teaching profession, its structural components, and its role in ensuring the effectiveness of the educational process. It also highlights the factors influencing the formation and development of pedagogical competence. According to the research findings, pedagogical competence is substantiated as a key factor that ensures a teacher’s professional success and the quality of education.

Keywords: pedagogical competence, professional competence, teacher mastery, quality of education, methodological training, communicative competence.

Introduction

The reforms being implemented in the modern education system are placing new demands on the professional activities of teachers. Globalization, the development of digital technologies, and the
introduction of a competency-based approach into the education system require teachers to possess a high level of pedagogical competence. This is because the quality of education directly
depends on the professional training and mastery of the teacher [1].
In scientific literature, the concept of pedagogical competence is interpreted as an integrative unity of a teacher’s professional knowledge, skills, personal qualities, and the ability to effectively
organize pedagogical activity [2].

Theoretical Foundations of Pedagogical Competence

The concept of “competence” originates from the Latin word competens, meaning “appropriate” or “capable.” In scientific sources, competence is explained as an individual’s readiness and ability to
effectively carry out a specific activity [3]. Pedagogical competence represents a set of professional qualities that enable a teacher to scientifically organize and manage the educational process and
achieve effective outcomes.

A.K. Markova defines pedagogical competence as the harmony of a teacher’s professional knowledge, pedagogical thinking, reflection, and personal position [4]. Likewise, in the works of Sh.A. Amonashvili and V.A. Slastenin, pedagogical competence is interpreted in connection with the teacher’s ability to implement a personality-oriented approach [5].

Components of Pedagogical Competence

• Professional (subject) competence — possession of deep theoretical and practical knowledge in the subject being taught.
• Methodological competence — ability to apply modern pedagogical technologies and methods.
• Psychological-pedagogical competence — consideration of students’ age and individual characteristics.
• Communicative competence — ability to establish effective communication and pedagogical cooperation.
• Information and communication competence — rational use of digital technologies.

The Role of Pedagogical Competence in Education Quality and
Social Development

The quality of education is closely linked to the professional mastery of the teacher. A competent teacher develops students’ independent thinking, applies innovative methods in the educational process, increases student motivation, and implements personality-oriented education. Therefore, pedagogical competence is not only an individual professional quality but also an important factor in shaping the intellectual potential of society [7].

Factors in Developing Pedagogical Competence

• Continuous professional education and advanced training;
• Participation in research activities;
• Pedagogical reflection and self-analysis;
• Studying innovative experiences and implementing them in practice.

Conclusion

Pedagogical competence is an integral and priority component of the teaching profession. It ensures the effectiveness of the educational process, contributes to the personal and intellectual development of students, and serves as an important factor in the sustainable development of society. Therefore, in the modern education system, the formation and development of pedagogical competence must be recognized as one of the priority tasks.

References

1. Law of the Republic of Uzbekistan “On Education.” – Tashkent, 2020.
2. Slastenin V.A. Pedagogy. – Moscow: Akademiya, 2002.
3. Zimnyaya I.A. Key Competencies as a Result of Education. – Moscow, 2004.
4. Markova A.K. Psychology of Professionalism. – Moscow: Znanie, 1996.
5. Amonashvili Sh.A. Personality-Oriented Humanistic Approach in Education. – Moscow, 1990.
6. Muslimov N.A. Theory and Methodology of Forming Professional Competence of Vocational
   Education Teachers. – Tashkent, 2007.
7. Khutorskoy A.V. Key Competencies as a Component of the Personality-Oriented Educational
   Paradigm. – Moscow, 2003.
8. Decrees and Resolutions of the President of the Republic of Uzbekistan on the Development

USE OF DIDACTIC GAMES AND MODERN TEACHING METHODS TO INCREASE STUDENTS’ INTEREST IN SCIENCE IN SPECIALIZED CLASSES OF FUTURE TEACHERS

Kadirova Feruzakhan Abdiyaminovna
Andijan State Pedagogical Institute
Master’s student of pedagogy
Scientific supervisor Abdullayeva Nasibakhan Jorayevna

Today, the reforms carried out in the education system require future teachers to deeply master modern pedagogical approaches. The use of didactic games and modern interactive methods is important in teaching.

Didactic games increase students’ interest in the lesson and make them active participants. For example, in the role-playing game method, students take the role of a certain profession or pedagogue and solve a problem situation. In this process, they apply their theoretical knowledge in practice. Or through a game organized in the form of a question-and-answer competition, students strengthen the topic and test their knowledge based on healthy competition.

The brainstorming method, which is one of the modern teaching methods, also develops students’ independent thinking. For example, students are asked to express different ideas by setting a problem on a new topic, in which each idea is appreciated and a general conclusion is drawn. This method is used by students forms the ability to think freely and defend one’s point of view.

The cluster method is also one of the effective methods, for example, a certain concept is written on the board, and students branch out their thoughts related to this concept. As a result, a comprehensive idea of the topic is formed This method is especially useful in the systematization of theoretical topics.

Through the insert method, students analyze their knowledge in the process of working with the text. They confirm the information they know during the study, determine new information and identify incomprehensible aspects, which develops students’ independent learning skills.

Case study, that is, the method of analyzing problematic situations, can also be widely used in specialized subjects. For example, students are given a pedagogical situation and asked to find a solution to the problem. This increases the ability to work in a team.

The use of information and communication technologies has also become an integral part of the modern lesson. Presentations, videos, online tests and lessons organized using interactive platforms attract the attention of students. For example, quick assessment
through electronic test or explanation of the topic through interactive presentations.

Construction Stuff

    When I think of construction

   I think of grunting, spitting and hollering,

        Men in overalls strutting slouching, pointing,

 I think of laying floors, plastering walls, sanding

I think of breaking down left wing panels and

       Wallpapering right wing partition fortifications

  I think of painting over things past to create 

            A pseudo phantasm of things present

               I think of cladding, wrapping pipes and erecting pipe ducts

                  Pounding steel rods into reluctantly receptive grounds

  Constructing precarious structures that might soon

  Crumble under Mount Vesuvius like destruction of

       A Roman city in seventy-nine Anno Domini…

   Or is this simply a construction of the deconstruction of

  A soon to be dissolution of our democracy?!

Jacques Fleury is a Boston Globe featured Haitian American Poet, Educator, Author of four books and literary arts student at Harvard University online. His latest publication “You Are Enough: The Journey to Accepting Your Authentic Self” & other titles are available at all Boston Public Libraries, the University of Massachusetts Healey Library, University of Wyoming, Askews and Holts Library Services in the United Kingdom, The Harvard Book Store, The Grolier Poetry Bookshop, Amazon etc… He has been published in prestigious publications such as Spirit of Change Magazine, Wilderness House Literary Review, Muddy River Poetry Review, Litterateur Redefining World anthologies out of India, Poets Reading the News, the Cornell University Press anthology Class Lives: Stories from Our Economic Divide, Boston Area Small Press and Poetry Scene among others…Visit him at:  http://www.authorsden.com/jacquesfleury.–

METHODOLOGY FOR WORKING WITH PRESCHOOL CHILDREN WITH AUTISM SPECTRUM DISORDER

Gulistan State Pedagogical Institute

Faculty of Pedagogy

Preschool Education Department

Student of Group 3-25: Burhonova Lobar

Scientific Supervisor: Berdiyeva Muborak

Tel: +998993744107

Abstract

This article presents a methodology for working with preschool children diagnosed with Autism Spectrum Disorder (ASD) based on the IMRAD structure. The Introduction highlights the increasing prevalence of ASD and the importance of early pedagogical intervention. The Methods section describes observation, diagnostic assessment, individualized development programs, the use of Applied Behavior Analysis (ABA), visual supports, structured teaching, and play therapy.

The Results demonstrate that systematic and individualized interventions significantly improve children’s communication, social interaction, and behavioral skills. The Discussion emphasizes the importance of parental involvement and the creation of an inclusive educational environment.

The findings of this study can be effectively applied in preschool educational practice.

Keywords: Autism Spectrum Disorder, preschool education, early intervention, ABA therapy, inclusive education, individualized approach, play therapy.

INTRODUCTION

In recent years, the number of children diagnosed with Autism Spectrum Disorder (ASD) has been steadily increasing worldwide. According to the World Health Organization, at least one in every 100 children is affected by autism. This growing prevalence highlights the urgent need to improve specialized pedagogical approaches, particularly in preschool education.

Preschool age is a critical period in a child’s psychological, speech, emotional, and social development. Early pedagogical and psychological intervention during this stage plays a decisive role in determining the effectiveness of future education.

In Uzbekistan, supporting children with special educational needs has become a priority of state policy. Reforms initiated by Shavkat Mirziyoyev focus on social protection and the development of inclusive education, ensuring equal opportunities for all children. Every child has the right to quality education and full participation in society, which requires scientifically grounded methodologies for working with children with ASD in preschool institutions.

Children with ASD often exhibit limited social interaction, repetitive behaviors, and delayed speech development. Therefore, it is essential to apply a комплекс of methods, including Applied Behavior Analysis (ABA), visual supports, structured teaching, play therapy, and sensory integration.

The relevance of this study lies in developing and implementing effective methodological approaches that enhance social adaptation, independence, and future educational success of preschool children with ASD. The study follows the IMRAD structure: Introduction, Methods, Results, and Discussion.

METHODS

This study focuses on improving methodologies for working with preschool children with ASD. Both theoretical and practical research methods were applied.

The theoretical stage involved analyzing scientific literature in special pedagogy, defectology, and inclusive education.

The practical stage included:

Observation

Interviews

Diagnostic assessment

Experimental pedagogical work

The study involved children aged 5–7 diagnosed with ASD. Individual development programs were designed for each participant.

The following methods were applied:

Applied Behavior Analysis (ABA) techniques

Visual supports and pictograms

Structured teaching

Play therapy

Speech development exercises

Sensory integration activities

Sessions were conducted 3–4 times per week in both individual and small group formats. Additionally, regular consultations were held with parents, providing guidance for home-based activities.

RESULTS

The experimental work showed that systematic and individualized intervention had a positive impact on children’s development.

The following improvements were observed:

Speech development: Increased vocabulary and ability to form simple sentences

Social interaction: More frequent engagement with peers

Behavioral changes: Reduction in repetitive behaviors

Attention skills: Improved concentration and task completion

These results confirm that early intervention and parental involvement significantly enhance developmental outcomes for children with ASD.

DISCUSSION

The findings indicate that individualized approaches, visual supports, and structured teaching methods are key factors in successful intervention. Furthermore, an inclusive educational environment plays a crucial role in children’s social adaptation.

State policy also contributes significantly to this process. As emphasized by Shavkat Mirziyoyev, every child must have access to quality education and opportunities for full participation in society.

Effective collaboration between educators and parents is essential for achieving sustainable developmental progress.

CONCLUSION

The study demonstrates that early diagnosis, individualized approaches, and systematic pedagogical intervention are crucial when working with preschool children with ASD.

Methods such as ABA, visual supports, structured teaching, and play therapy have proven effective in developing communication, social, and behavioral skills.

The IMRAD-based research confirms that individualized programs significantly improve children’s social adaptation and reduce stereotypical behaviors. Additionally, parental involvement and inclusive education environments are critical components of success.

In conclusion, improving methodologies for working with children with ASD requires:

Enhancing teacher qualifications

Developing modern methodological resources

Expanding inclusive education practices

Beyond methodology, the most important factor remains the educator’s patience, empathy, and individualized approach to each child. With proper support and collaboration between families and educational institutions, children with ASD can successfully integrate into society.