Multiple Choice
Which of the following is a primary function of oxytocin in the human body?
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16. The Endocrine System
Introduction to the Endocrine System
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Which of the following is a hormone secreted by the adrenal medulla?
A
Epinephrine
B
Cortisol
C
Aldosterone
D
Insulin
Verified step by step guidance1
Understand the anatomy of the adrenal gland: The adrenal gland consists of two main parts—the adrenal cortex and the adrenal medulla. The adrenal cortex secretes steroid hormones like cortisol and aldosterone, while the adrenal medulla secretes catecholamines such as epinephrine and norepinephrine.
Identify the function of the adrenal medulla: The adrenal medulla is responsible for producing hormones involved in the 'fight or flight' response. These hormones are catecholamines, specifically epinephrine (adrenaline) and norepinephrine.
Review the options provided: Cortisol and aldosterone are secreted by the adrenal cortex, not the adrenal medulla. Insulin is secreted by the pancreas, not the adrenal gland.
Focus on epinephrine: Epinephrine is a hormone secreted by the adrenal medulla and plays a key role in increasing heart rate, blood pressure, and energy availability during stress.
Conclude that epinephrine is the correct answer based on its origin and function, as it is the hormone secreted by the adrenal medulla.
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