ATI RN
Questions on the Endocrine System Questions
Question 1 of 5
Which of these is not an endocrine gland?
Correct Answer: C
Rationale: Salivary glands are exocrine, secreting saliva via ducts for digestion, not hormones into blood. Pancreas (insulin), testes (testosterone), and parathyroid (PTH) are endocrine, releasing hormones systemically for glucose, reproduction, and calcium regulation. Salivary's ducted, non-hormonal output distinguishes it, contrasting with endocrine glands' blood-mediated roles, key to gland classification.
Question 2 of 5
Androgens are produced by the
Correct Answer: B
Rationale: Androgens, like testosterone, are primarily produced by the testes in males, driving male traits and spermatogenesis. Ovaries produce minor androgens, the hypothalamus regulates via GnRH, and islets secrete insulin/glucagon not androgens. Testicular production distinguishes androgen's source, key to reproductive endocrinology, contrasting with regulatory or metabolic glands.
Question 3 of 5
The body's major metabolic hormone is released from the:
Correct Answer: B
Rationale: Thyroid hormone (T3/T4) from the thyroid regulates basal metabolic rate, influencing all cells' energy use. Pituitary (GH), thymus (immunity), and hypothalamus (regulatory) hormones don't match this scope. Thyroid hormone's metabolic dominance distinguishes it, key to systemic energy control, contrasting with growth or immune roles.
Question 4 of 5
Why can a single endocrine hormone produce a wider spread of responses in more of the body than a single nerve cell?
Correct Answer: B
Rationale: Hormones travel via blood, reaching multiple target cells body-wide, eliciting varied responses (e.g., cortisol in stress). Nerve cells target specific cells via synapses, limiting scope. Endocrine-nervous integration exists, but blood's distribution distinguishes hormonal spread, key to systemic effects, contrasting with neural precision.
Question 5 of 5
Thyroid gland produces a hormone called 'thyroxine' which
Correct Answer: C
Rationale: Thyroxine (T4), produced by the thyroid gland, regulates the body's metabolic rate, dictating how cells convert nutrients into energy, impacting heart rate, digestion, and growth. Blood glucose is managed by insulin/glucagon from the pancreas, ovulation by LH/FSH from the pituitary neither thyroxine's role. 'More than one' is incorrect as thyroxine's primary function is singularly metabolic. This specificity distinguishes thyroxine's systemic metabolic influence, critical for energy homeostasis, contrasting with glucose or reproductive hormones.