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Advanced Endocrinology MCQs

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Questions and Answers

What is the primary mechanism by which hormones are transported in the bloodstream?

Binding to albumin (correct)

Binding to lipoproteins

Binding to globulins

Binding to cortisol-binding globulin

Which of the following hormones is NOT produced by the adrenal cortex?

Androstenedione

Cortisol

Aldosterone

Adrenocorticotropic hormone (ACTH) (correct)

What is the primary function of parathyroid hormone (PTH) in calcium homeostasis?

Stimulating osteoclast activity

Increasing calcium absorption in the gut (correct)

Inhibiting bone resorption

Regulating vitamin D metabolism

Which of the following is a characteristic of autocrine signaling?

Hormones act on the same cell that produced them (A) Signup and view all the answers

What is the primary mechanism of hormone regulation in endocrine glands?

Negative feedback loops (A) Signup and view all the answers

What is a fundamental distinction between endocrine and paracrine signaling?

Distance over which the signal acts (B) Signup and view all the answers

Which of the following statements best describes a characteristic unique to autocrine signaling?

The signal is received by the same cell that produced it (A) Signup and view all the answers

What is the primary function of the adrenal medulla?

Production of catecholamines in response to stress (B) Signup and view all the answers

Which of the following endocrine glands is responsible for regulating the body's response to stress?

Adrenal medulla (A) Signup and view all the answers

What is a key difference between the pituitary gland and other endocrine glands?

Storage and release of hormones produced by other glands (C) Signup and view all the answers