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Hormones that control the function of the anterior pituitary gland are released from the

A.

Thalamus

B.

Hypothalamus

C.

Basal ganglia

D.

Spinal cord

E.

Hippocampus

Answer and Explanation

The Correct Answer is B

a) Thalamus: Relay center for sensory signals, not involved in hormone secretion.

b) Hypothalamus: Releases releasing and inhibiting hormones (e.g., TRH, GnRH, CRH) that regulate the anterior pituitary's activity.

c) Basal ganglia: Involved in motor control, not endocrine regulation.

d) Spinal cord: Transmits nerve signals; no role in endocrine control of the pituitary.

e) Hippocampus: A crucial brain structure involved in memory formation, spatial navigation, and emotional regulation. 


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Related Questions

Correct Answer is A

Explanation

a) store iron in the liver: Ferritin is an intracellular protein that stores iron and releases it in a controlled fashion. It is primarily found in the liver, spleen, and bone marrow.

b) Absorb iron across intestinal cells: DMT1 (divalent metal transporter 1) and ferroportin are more directly involved in this.

c) Oxidize iron in the peroxisomes: Iron oxidation is not a function of peroxisomes, nor of ferritin.

d) Transport iron in the blood: Transferrin, not ferritin, is responsible for iron transport in plasma.

Correct Answer is D

Explanation

a) It is transported to the liver and becomes part of the bile: This applies to bilirubin, a byproduct of heme, not iron.

b) It is converted into stercobilin and gives color to feces: Stercobilin is derived from bilirubin, not iron.

c) It is used to synthesize proteins: While iron is important in protein function, its primary fate is recycling for hemoglobin.

d) It attaches to transferrin and is transported to bone marrow for use in hemoglobin synthesis. Iron is bound to transferrin in the blood and transported to the bone marrow for new red blood cell (hemoglobin) synthesis.

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