Multiple Choice
Which endocrine gland secretes several hormones that stimulate lymphatic organs and T cell activity?
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43. Endocrine System
Endocrine System
Multiple Choice
Which gland is primarily responsible for regulating metabolism through the secretion of thyroxine (\(T_4\)) and triiodothyronine (\(T_3\))?
A
Thyroid gland
B
Pancreas
C
Adrenal gland
D
Pituitary gland
Verified step by step guidance1
Identify the hormones mentioned in the problem: thyroxine (\(T_4\)) and triiodothyronine (\(T_3\)). These are key hormones involved in regulating metabolism.
Understand the function of these hormones: \(T_4\) and \(T_3\) are responsible for controlling the body's metabolic rate, heart rate, and energy production.
Recall which gland produces these hormones: The thyroid gland is the primary gland responsible for secreting \(T_4\) and \(T_3\).
Differentiate the other glands listed: The pancreas regulates blood sugar levels through insulin and glucagon, the adrenal gland produces stress-related hormones like cortisol and adrenaline, and the pituitary gland is a master gland that controls other glands but does not directly produce \(T_4\) or \(T_3\).
Conclude that the thyroid gland is the correct answer because it directly secretes thyroxine (\(T_4\)) and triiodothyronine (\(T_3\)), which regulate metabolism.
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