Multiple Choice
Which endocrine gland secretes epinephrine (adrenaline) into the bloodstream?
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16. The Endocrine System
Introduction to the Endocrine System
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Which endocrine gland secretes epinephrine (adrenaline) into the bloodstream?
A
Adrenal medulla (part of the adrenal gland)
B
Parathyroid glands
C
Anterior pituitary gland
D
Thyroid gland
Verified step by step guidance1
Understand that epinephrine, also known as adrenaline, is a hormone involved in the body's 'fight or flight' response, which prepares the body to respond to stress.
Recall that the adrenal gland is divided into two main parts: the adrenal cortex (outer layer) and the adrenal medulla (inner core). Each part secretes different hormones.
Identify that the adrenal medulla specifically secretes catecholamines, which include epinephrine and norepinephrine, directly into the bloodstream.
Recognize that the other glands listed (parathyroid glands, anterior pituitary gland, thyroid gland) secrete different hormones unrelated to epinephrine.
Conclude that the endocrine gland responsible for secreting epinephrine into the bloodstream is the adrenal medulla, which is part of the adrenal gland.
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