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Where is the hypothalamus located in the human body?
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16. The Endocrine System
Introduction to the Endocrine System
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Which chemicals are primarily released from the adrenal medulla?
A
Thyroxine and calcitonin
B
Cortisol and aldosterone
C
Epinephrine and norepinephrine
D
Insulin and glucagon
Guida verificata passo dopo passo1
Step 1: Understand the function of the adrenal medulla. The adrenal medulla is the inner part of the adrenal gland and is responsible for releasing hormones in response to stress, particularly during the 'fight or flight' response.
Step 2: Identify the primary hormones released by the adrenal medulla. These hormones are catecholamines, specifically epinephrine (adrenaline) and norepinephrine (noradrenaline). They play a key role in increasing heart rate, blood pressure, and energy availability.
Step 3: Differentiate the adrenal medulla from the adrenal cortex. The adrenal cortex releases steroid hormones such as cortisol and aldosterone, while the adrenal medulla releases catecholamines.
Step 4: Eliminate incorrect options based on their source. Thyroxine and calcitonin are produced by the thyroid gland, not the adrenal medulla. Insulin and glucagon are secreted by the pancreas.
Step 5: Confirm the correct answer. Based on the function and hormone production of the adrenal medulla, the correct chemicals released are epinephrine and norepinephrine.
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