ATI RN
Endocrine System Practice Questions Questions
Question 1 of 5
When a hormone is present in excessive levels, the number of target-cell receptors may decrease. This is called
Correct Answer: D
Rationale: Down-regulation occurs when excessive hormone levels reduce target-cell receptor numbers, preventing overstimulation a negative feedback mechanism. 'Receptor recognition' isn't a process, 'sensory adaptation' applies to nerves, and 'paracrine regulation' involves local signaling not receptor adjustment. Though option D isn't listed, context and endocrine principles confirm 'down-regulation' as standard terminology (likely missing due to OCR cutoff). This adaptive response distinguishes endocrine self-regulation, vital for homeostasis, contrasting with static or unrelated mechanisms.
Question 2 of 5
Which of the following is NOT a common effect of glucocorticoid stimulation?
Correct Answer: D
Rationale: Glucocorticoids (e.g., cortisol) promote protein/fat breakdown, gluconeogenesis, and immune suppression not increased oxygen, which relates to respiration. 'D' inferred as missing option fits. This distinguishes glucocorticoids' metabolic/stress roles, vital for energy mobilization, contrasting with respiratory functions.
Question 3 of 5
Which of the following is a possible effect of hypersecretion of cortisol?
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 4 of 5
Which of the following bones (marked in the diagram) contains a depression which houses the endocrine gland shown in the diagram?
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 5 of 5
The following is a possible progression of which of the following disorders: Inadequate dietary iodine intake → low level of thyroid hormone in blood → increased TSH
Correct Answer: A
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.