교과서 질문
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Steroid hormones are hydrophilic molecules that bind to plasma membrane proteins as part of a second-messenger system.
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Ch. 16 The Endocrine System
Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822
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Table of contents
- Ch. 1 Introduction to Anatomy and Physiology26
- Ch. 2 The Chemistry of Life38
- Ch. 3 The Cell55
- Ch. 4 Histology47
- Ch. 5 The Integumentary System30
- Ch. 6 Bones and Bone Tissue36
- Ch. 7 The Skeletal System40
- Ch. 8 Articulations19
- Ch. 9 The Muscular System36
- Ch. 10 Muscle Tissue and Physiology29
- Ch. 11 Introduction to the Nervous System and Nervous Tissue28
- Ch. 12 The Central Nervous System42
- Ch. 13 The Peripheral Nervous System41
- Ch. 14 The Autonomic Nervous System and Homeostasis31
- Ch. 15 The Special Senses39
- Ch. 16 The Endocrine System42
- Ch. 17 The Cardiovascular System I: The Heart30
- Ch. 18 The Cardiovascular System II: The Blood Vessels43
- Ch. 19 Blood32
- Ch. 20 The Lymphatic System and Immunity45
- Ch. 21 The Respiratory System27
- Ch. 22 The Digestive System27
- Ch. 23 Metabolism and Nutrition7
- Ch. 24 The Urinary System39
- Ch. 25 Fluid, Electrolyte, and Acid-Base Homeostasis39
- Ch. 26 The Reproductive System10
- Ch. 27 Development and Heredity5
16장, 문제 1e
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
The secretion of most hormones is regulated by a negative feedback system.
검증된 단계별 안내1
Step 1: Understand the concept of negative feedback in the endocrine system. Negative feedback is a regulatory mechanism in which a stimulus causes an opposite output to maintain homeostasis. For example, when hormone levels rise above a certain threshold, the body reduces its production or secretion to restore balance.
Step 2: Analyze the statement provided: 'The secretion of most hormones is regulated by a negative feedback system.' This statement is generally true because most hormones, such as insulin, thyroid hormones, and cortisol, are regulated by negative feedback loops to maintain stable physiological conditions.
Step 3: Consider exceptions to the rule. While most hormones are regulated by negative feedback, some hormones, such as oxytocin during childbirth, are regulated by positive feedback mechanisms. Positive feedback amplifies the response rather than counteracting it.
Step 4: If the statement is true, confirm it as correct. If the statement is false, identify the incorrect part and rewrite it to reflect the correct information. For example, if the statement incorrectly claimed that all hormones are regulated by negative feedback, you would correct it to say 'Most hormones are regulated by negative feedback systems, but some, like oxytocin, are regulated by positive feedback systems.'
Step 5: Summarize the corrected or confirmed statement and ensure the explanation aligns with the principles of Anatomy & Physiology, emphasizing the importance of feedback mechanisms in hormonal regulation.
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이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
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주요 개념
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Hormonal Regulation
Hormonal regulation refers to the mechanisms by which hormones are secreted and controlled in the body. This process ensures that hormone levels remain balanced, allowing for proper physiological function. Hormones can influence various bodily functions, including metabolism, growth, and mood, and their secretion is often tightly regulated to respond to the body's needs.
추천 영상:
가이드 코스
13:06
Review of Major Hormones
Negative Feedback Mechanism
A negative feedback mechanism is a control system that counteracts changes in a physiological variable to maintain homeostasis. In the context of hormone secretion, when a hormone reaches a certain level, it signals the endocrine system to reduce or stop its production. This process helps to stabilize hormone levels and prevent overproduction or underproduction, ensuring the body functions optimally.
추천 영상:
가이드 코스
03:26Negative Feedback Loops
Exceptions to Negative Feedback
While most hormones are regulated by negative feedback, some hormones operate through positive feedback mechanisms, where an increase in hormone levels leads to further secretion. An example is oxytocin during childbirth, where its release enhances uterine contractions. Understanding these exceptions is crucial for a comprehensive grasp of hormonal regulation and its complexities.
추천 영상:
가이드 코스
03:26Negative Feedback Loops
관련 실천
교과서 질문
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
The pancreas, thyroid gland, and parathyroid glands secrete neurohormones.
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교과서 질문
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Autocrine signals affect the same cells that secrete them.
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교과서 질문
Which of the following is not a potential effect that a hormone could have on its target cell?
a. Activating genes in the DNA
b. Stimulating cellular division
c. Altering the permeability of the plasma membrane
d. All of the above are potential effects of a hormone on its target cell.
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교과서 질문
Females with hormone-secreting tumors of the adrenal cortex occasionally develop male secondary sex characteristics. Explain why this may happen.
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교과서 질문
A patient has a brain tumor that necessitates removal of his pituitary gland. Will its removal affect production of ADH and oxytocin? Explain.
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