25 Questions
What is the primary function of secreting thyroid hormones?
Maintaining optimal metabolism in tissues
Which body system is directly impacted by the secretion of thyroid hormones?
Endocrine system
How does maintaining optimal metabolism in tissues benefit the body?
Supports normal organ function
What happens if the level of thyroid hormones secreted is inadequate?
Decreased metabolism
How do thyroid hormones impact O₂ consumption in the body?
Increase O₂ consumption
Which of the following is a consequence of reduced thyroid hormone secretion?
Sluggish metabolism
What role do thyroid hormones play in regulating metabolism?
Regulate both lipid and carbohydrate metabolism
What is the primary effect of thyroid hormones on mentation?
Enhance cognitive function
How can thyroid hormones influence body mass?
Increase body mass
In what way do thyroid hormones affect lipid and carbohydrate metabolism?
Regulate both lipid and carbohydrate metabolism
What are the common symptoms of hypothyroidism?
Poor resistance to cold and mental and physical slowing
Which hormone regulates TSH?
TRH
In hypothyroidism, what is the main symptom related to temperature?
Cold intolerance
What type of feedback control is involved in regulating thyroid function?
Direct inhibition by T4
What is the role of TSH in controlling thyroid function?
Directly stimulates thyroid hormone production
What is the consequence of the absence or hypofunction of the thyroid during fetal and neonatal life?
Severe mental retardation
In adults, what symptoms are typically associated with hypothyroidism?
Mental and physical slowing
Which of the following statements about the thyroid's importance for life is accurate?
The thyroid is not essential for life but crucial during fetal and neonatal life
What is a common symptom of hypothyroidism in adults related to body temperature regulation?
Poor resistance to cold
Which hormone secreted by the thyroid gland has the effect of lowering blood calcium levels?
Calcitonin
What is the primary function of calcitonin in the body?
Lower blood calcium levels
How does hypothyroidism affect cognitive function in adults?
Leads to mental slowing
In terms of blood calcium regulation, which hormone opposes the action of calcitonin?
Parathyroid Hormone (PTH)
What is the medical condition characterized by excess secretion of calcitonin leading to low blood calcium levels called?
Hypocalcemia
Which of the following hormones is NOT involved in the regulation of blood calcium levels?
Estrogen
Test your knowledge on how thyroid hormones stimulate oxygen consumption, regulate lipid and carbohydrate metabolism, and affect body mass and mentation.
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