One of the statements below is true. Which one?
the anterior pituitary produces testosterone from cholesterol and releases it when releasing hormones arrive from the hypothalamus.
the hypothalamus produces ADH and oxytocin which are stored in the posterior pituitary
the posterior pituitary contains autonomic centers that exert neural control over the adrenal glands
the thalamus produces ADH and oxytocin which are stored in the anterior pituitary
The Correct Answer is B
a) The anterior pituitary produces testosterone from cholesterol and releases it when releasing hormones arrive from the hypothalamus.
Testosterone is produced in the testes, not the anterior pituitary.
b) The hypothalamus produces ADH and oxytocin which are stored in the posterior pituitary.
ADH and oxytocin are synthesized in the hypothalamus and then transported to and stored in the posterior pituitary until needed.
c) The posterior pituitary contains autonomic centers that exert neural control over the adrenal glands.
The hypothalamus, not the posterior pituitary, regulates the adrenal medulla via neural signals.
d) The thalamus produces ADH and oxytocin which are stored in the anterior pituitary.
The thalamus is a relay station for sensory signals, not a hormone-producing structure.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
a) Hemoglobin: Hemoglobin is the oxygen-carrying protein inside RBCs, measured in grams per deciliter.
b) Hematocrit: Hematocrit is the percentage of whole blood volume made up by red blood cells (RBCs). It's used to assess anemia or polycythemia.
c) Erythropoietin: This is a hormone (mostly from the kidneys) that stimulates RBC production in the bone marrow.
d) Erythrocyte sedimentation rate: This test measures how quickly RBCs settle in a test tube, used as a nonspecific marker for inflammation.
Correct Answer is A
Explanation
a) Lumen of follicle: Iodide is actively transported into follicular cells, then secreted into the follicular lumen, where it becomes oxidized and incorporated into thyroglobulin during the synthesis of thyroid hormones (T3 and T4).
b) Secretory vesicles inside follicular cells: These vesicles may contain thyroglobulin, but iodide is concentrated in the lumen for hormone synthesis.
c) Golgi apparatus of parafollicular cells: Parafollicular (C) cells produce calcitonin, not thyroid hormones.
d) Cytoplasm of follicular cells: While iodide is transported into the cytoplasm briefly, its major functional location is in the lumen.
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