ATI RN
Endocrine System Questions Questions
Question 1 of 5
The secretions from which of these glands differs between males and females?
Correct Answer: C
Rationale: Gonadal glands (testes, ovaries) differ testes secrete testosterone, ovaries estrogen/progesterone, shaping sex-specific traits. Adrenal (cortisol, aldosterone), parathyroid (PTH), and pancreas (insulin) secretions are sex-agnostic, serving universal functions (stress, calcium, glucose). Gonadal hormone divergence distinguishes them, critical for reproductive dimorphism, unlike consistent outputs.
Question 2 of 5
The secretions from which of these glands differs between males and females?
Correct Answer: C
Rationale: Gonadal glands (testes, ovaries) differ: testes secrete testosterone, ovaries estrogens/progesterone, defining sex-specific traits. Adrenal, parathyroid, and pancreas secretions (e.g., cortisol, PTH, insulin) are similar across sexes. Gonadal variation distinguishes it, critical for reproductive endocrinology, contrasting with universal hormones.
Question 3 of 5
What stimulates the release of PTH from the parathyroid gland?
Correct Answer: D
Rationale: Low blood calcium triggers parathyroid hormone (PTH) release to raise levels via bone resorption and kidney action. High calcium inhibits, TSH targets thyroid, calcitonin (thyroid-made) lowers calcium. Low calcium stimulus distinguishes PTH regulation, critical for calcium homeostasis, contrasting with inhibitory or unrelated signals.
Question 4 of 5
Which among the following is an Endocrine gland in the human body?
Correct Answer: C
Rationale: The pituitary gland, an endocrine gland, secretes hormones (e.g., GH, TSH) into the bloodstream, dubbed the 'master gland' for regulating others. Salivary, digestive (e.g., pancreas exocrine), and sweat glands are exocrine, using ducts not blood for secretions. Pituitary's ductless, systemic influence distinguishes it, critical for endocrine coordination, contrasting with exocrine functions.
Question 5 of 5
with regard to thyroid physiology
Correct Answer: C
Rationale: T4 (thyroxine) is synthesized from tyrosine in thyroglobulin within thyroid follicles, iodinated to form T3/T4, released to boost metabolism. Metabolism occurs mainly in liver/kidneys, not spleen/bone marrow. T3/T4 act via nuclear receptors, not identical membrane ones T3 is more potent. T4 isn't more active converted to T3 for greater effect. Thyroglobulin's role as a precursor scaffold distinguishes T4 synthesis, key to thyroid hormone production, unlike incorrect metabolism sites, receptor action, or potency claims.