Name: how feedback failure disrupts homeostasis
Uploaded: 2025-05-22T09:05:53.000Z
Duration: 1 min 10 s
Channel: JoVE

K12 Standards

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North Carolina K-12 Science Standard Course of Study

9-12

Biology

from-molecules-to-organisms-structures-and-processes

From Molecules to Organisms- Structures and Processes

LS.Bio.3.1

Homeostatic Imbalance

Homeostaz veya homeostatik dengeyi korumak, stabil bir iç vücut ortamını korumak için çok önemlidir. Geri besleme döngüleri, fizyolojik tepkileri düzenleyerek homeostatik dengenin korunmasına yardımcı olur.
Bununla birlikte, yaşlanma, enfeksiyon veya genetik veya çevresel etkiler bu geri besleme döngülerini bozarak homeostatik dengesizliğe yol açabilir. Bu bozulma rahatsızlıklara, hastalıklara ve ciddi durumlarda hatta ölüme neden olabilir.
Örneğin, homeostaz korunduğunda, insülin hormonu vücuttaki kan şekeri seviyelerini düzenler. İnsülin, hücrelere kandan glikoz almaları için sinyal verir ve normal glikoz seviyelerinin korunmasına yardımcı olur.
İnsülin direnci veya bozulmuş insülin sentezi nedeniyle homeostatik bir dengesizlik meydana gelir ve bu da diyabetle sonuçlanır. Bu gibi durumlarda, glikoz kanda yüksek seviyelerde kalır. Bu nedenle, diyabetli birçok kişi kan şekeri homeostazını korumak için ilaç veya insülin alır.

homeostatik dengesizlik

Homeostaz, hücrelerin, dokuların, organların ve organ sistemlerinin doğru şekilde çalışması için vücut içindeki istikrarlı bir iç ortamın korunmasıdır. Vücut, sıcaklık, kan basıncı, pH dengesi ve sıvı dengesi gibi çeşitli fizyolojik parametreleri düzenlemek için birlikte çalışan çeşitli kontrol mekanizmalarına sahiptir. Bu kontrol mekanizmaları, olumlu veya olumsuz olabilen geri bildirim döngülerine dayanmaktadır.

Ancak bazen bu geri bildirim döngüleri başarısız olur ve vücut homeostasisi koruyamaz, bu duruma homeostatik dengesizlik denir. Bu durum, yaralanma, hastalık, çevresel değişiklikler, genetik mutasyonlar veya yaşlanma gibi çeşitli faktörlere bağlı olarak ortaya çıkabilir.

Homeostatik dengesizlik vücut üzerinde zararlı etkilere sahip olabilir ve çeşitli hastalık ve bozukluklara yol açabilir. Örneğin, kan glikoz seviyelerini düzenleyen geri bildirim döngüsündeki bir bozulma diyabete yol açabilir. Benzer şekilde, vücudun sıvı ve elektrolit dengesindeki dengesizlik dehidrasyon, elektrolit dengesizlikleri ve diğer ilgili bozukluklara yol açabilir.

Homeostaz tüm yaş gruplarındaki bireylerde bozulabilir, ancak yaşlanan nüfus homeostatik dengesizliklere daha duyarlıdır. Yaşlanma ile birlikte hipotalamus geri bildirim sinyallerine daha az duyarlı hale gelir, metabolik, enerji ve stres düzenlemesinde bozulmalara neden olur ve kalp yetmezliği gibi hastalık riskini artırır.

Homeostatik Dengesizlik

Homeostaz, hücrelerin, dokuların, organların düzgün çalışması için çok önemli olan vücutta stabil bir iç ortamın sürdürülmesidir ...

Education

JoVE Core

Anatomy and Physiology

Anatomi ve Fizyoloji

Unit 1

Ünite 1

Introduction to the Human Body

İnsan Vücuduna Giriş

KEY TERMS AND CONCEPTS

TEMEL TERİMLER VE KAVRAMLAR

how feedback failure disrupts homeostasis

Homeostasis keeps the body’s internal conditions stable so cells, tissues, organs, and organ systems can work properly. The body uses control systems to regulate temperature, blood pressure, pH balance, and fluid balance. These controls depend on feedback loops, which can be positive or negative.

Homeostatic imbalance happens when those feedback loops fail and the body can no longer maintain a stable internal environment. Injury, disease, environmental changes, genetic mutations, and aging can all contribute to this problem. When balance is lost, the effects can spread through the body and increase the risk of disease.

A common example is blood glucose control. If the feedback loop that regulates blood sugar is disrupted, diabetes can develop. Another example is fluid and electrolyte balance, which can be disturbed and lead to dehydration, electrolyte imbalances, and related disorders.

Older adults are often more vulnerable to homeostatic imbalance. As people age, the hypothalamus becomes less sensitive to feedback signals. This can affect metabolism, energy control, and stress regulation, and it can raise the risk of problems such as heart failure.

How Feedback Failure Disrupts Homeostasis

how-feedback-failure-disrupts-homeostasis

overview of anatomy and physiology

How Anatomy and Physiology Work Together

Human anatomy studies the structures of the body. Some body structures are so small that they can only be seen and examined with a microscope. Others are large enough to be viewed, handled, measured, and weighed. The word anatomy comes from a Greek root meaning “to cut apart.” Early study of the human body began with observing the outside of the body and the injuries seen in soldiers and other patients. Later, physicians were allowed to dissect dead bodies to learn more. Dissection means...

structural organization of the human body: an overview

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Levels of Organization in the Human Body

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what is homeostasis?

Homeostasis and Negative Feedback

Homeostasis keeps the body’s internal conditions stable. The body does this by holding each physiological condition near a set point. A set point is the value around which the normal range changes, and the normal range is the small group of values that is healthiest and most stable. Human body temperature is a common example. Its set point is about 37°C, or 98.6°F, and it can shift a little above or below that point while still staying in range. Negative feedback helps maintain homeostasis.

negative and positive feedback

Feedback Loops in Body Balance

Negative and positive feedback help keep body conditions stable. These feedback loops control many body processes and support homeostasis, which is the maintenance of a steady internal environment. Negative feedback reduces a change and brings a system back toward its normal state. Positive feedback increases a change and pushes a process further in the same direction. Together, they show how the body can fine-tune responses when conditions shift. These control systems are important in many...

homeostatic imbalance

Homeostasis keeps the body’s internal conditions stable so cells, tissues, organs, and organ systems can work properly. The body uses control systems to regulate temperature, blood pressure, pH balance, and fluid balance. These controls depend on feedback loops, which can be positive or negative. Homeostatic imbalance happens when those feedback loops fail and the body can no longer maintain a stable internal environment. Injury, disease, environmental changes, genetic mutations, and aging can...

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key terms and concepts

Learn how failed feedback loops cause homeostatic imbalance, from blood glucose problems and dehydration to age-related changes in the hypothalamus.

How Feedback Failure Disrupts Homeostasis | JoVE K12

anatomy and physiology

JoVE Core Anatomi ve Fizyoloji, insan vücudunun anatomik ve fizyolojik ayrıntılarını kapsamlı, net ve ilgi çekici video animasyonlarıyla sergiliyor. Bu ders koleksiyonu insan vücudunun yapıları, bileşenleri, işlevleri ve gereksinimlerine odaklanmaktadır. Bu bilginin gerçek dünyadaki tıp ve araştırma ortamlarında uygulanmasını gösteren eylem halindeki bilim insanıvideolarıyla tamamlanmaktadır.

Pennsylvania State Academic Standards

Life Science

Structure and Function

3.1.9-12.C

Louisiana Student Standards for Science

High School

Life Sciences

From Molecules To Organisms: Structures And Processes

HS-LS1-3

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Ohio’s Learning Standards and Model Curriculum

Cells

Cell structure and function

Human Anatomy and Physiology

Levels Of Organization

Homeostasis

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HIgh School

BIO.2

BIO.2.a

Minnesota Academic Standards in Science

1.2.1 9L.1.2.1.1

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New Jersey Student Learning Standards for Science

From Molecules to Organisms: Structures and Processes

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9-12.B.1.4

Next Generation Science Standards

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BIO.5

BIO.5.C

BIO.12

BIO.12.A

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South Carolina College and Career Ready Science Standards

B-LS1-3.

new-york-state-science-learning-standards

New York State Science Learning Standards

HS-LS1-3.

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How Feedback Failure Disrupts Homeostasis

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