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Which of the following are structures of the Endocrine System? (Select all that apply)
(Select All that Apply.)

A.

Adrenal glands

B.

Pancreas

C.

Duodenum

D.

Ovaries

Answer and Explanation

Correct Answer : A,B,D,E

A. Adrenal glands: Secrete cortisol, aldosterone, adrenaline-endocrine glands.

B. Pancreas: Has both endocrine (insulin, glucagon) and exocrine functions.

C. Duodenum: Part of the digestive system, not endocrine.

D. Ovaries: Secrete estrogen and progesterone-endocrine function.

E. Hypothalamus: Regulates the pituitary gland- key endocrine controller.


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Related Questions

Correct Answer is A

Explanation

A. Erythropoietin:
Erythropoietin is released by the kidneys in response to hypoxia to stimulate red blood cell production.

B. Renin:
Renin is secreted in response to low blood pressure, not low oxygen levels.

C. ADH:
ADH responds to high plasma osmolality and low blood volume, not oxygen levels.

D. Aldosterone:
Aldosterone is secreted in response to low sodium or high potassium, and part of the RAAS, not oxygen deficiency.

Correct Answer is D

Explanation

A. Secreted in response to elevated glucose levels: T3 and T4 regulate metabolism, not glucose.
B. Secreted in response to decreasing calcium blood levels: This describes PTH, not T3/T4.
C. Secreted by the parathyroid gland: T3 and T4 are secreted by the thyroid gland.
D. Secreted by the thyroid gland: T3 (triiodothyronine) and T4 (thyroxine) are thyroid hormones involved in metabolic regulation.

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