Domanda del libro di testo
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Excess secretion of thyroid hormones produces weight gain, cold intolerance, and slow heart rate.
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Ch. 16 The Endocrine System
Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822
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TOC.tableOfContents
- 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
Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822Non è quello che usi tu?Cambia libro di testo
Capitolo 16, Problema 9b
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Thyroxine (T4) is the more active of the two thyroid hormone
Guida verificata passo dopo passo1
Understand the context: Thyroid hormones include thyroxine (T4) and triiodothyronine (T3). These hormones play a critical role in regulating metabolism, growth, and development.
Recall the activity levels of T4 and T3: T3 is the more active form of thyroid hormone, while T4 is considered a prohormone that is converted into T3 in target tissues.
Evaluate the statement: The statement claims that T4 is the more active of the two thyroid hormones. Based on the above information, this statement is false.
Correct the statement: The corrected statement should read, 'Triiodothyronine (T3) is the more active of the two thyroid hormones, while thyroxine (T4) serves as a precursor that is converted into T3 in target tissues.'
Summarize the reasoning: T3 has a higher binding affinity for thyroid hormone receptors and is therefore more biologically active than T4, which primarily acts as a reservoir for T3 production.
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Thyroid Hormones
Thyroid hormones, primarily thyroxine (T4) and triiodothyronine (T3), are crucial for regulating metabolism, growth, and development in the body. T4 is produced in larger quantities by the thyroid gland, but T3 is considered the more active form, exerting greater physiological effects on tissues.
Video consigliato:
13:06
Review of Major Hormones
Hormonal Activity
Hormonal activity refers to the effects that hormones have on various physiological processes in the body. In the case of thyroid hormones, T3 binds more effectively to nuclear receptors in cells, leading to a more potent influence on metabolism compared to T4, which is often converted to T3 in peripheral tissues.
Video consigliato:
13:06Review of Major Hormones
Feedback Mechanism
The feedback mechanism is a regulatory process in the endocrine system that maintains homeostasis. In the context of thyroid hormones, the hypothalamus and pituitary gland monitor levels of T3 and T4, adjusting the secretion of thyroid-stimulating hormone (TSH) to ensure appropriate hormone levels are maintained in the bloodstream.
Video consigliato:
02:43Feedback Loops: Positive Feedback Example 1
Pratica correlata
Domanda del libro di testo
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Thyroid hormones are produced by follicle cells.
799
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Domanda del libro di testo
Which of the following is not an effect of thyroid hormones?
a. Regulation of the metabolic rate
b. Promotion of growth and development
c. Thermoregulation
d. Synergism with the parasympathetic nervous system
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Domanda del libro di testo
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Iodine atoms are a key component of parathyroid hormone.
1073
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Domanda del libro di testo
The thyroid gland consists of:
a. Follicle cells that secrete calcitonin
b. Spherical thyroid follicles that contain iodine-containing colloid
c. Parafollicular cells that produce thyroid hormones
d. Spherical thyroid follicles that surround parathyroid hormone–secreting cells
732
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Domanda del libro di testo
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
About 90% of the thyroid hormone produced is triiodothyronine (T3).
1029
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