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Human Anatomy and Physiology Chapter 17 Questions and Answers | Latest Version | 2025/2026 | Correct & Verified
What is the main function of the endocrine system?✔✔ To regulate body processes through hormones.
Where are hormones released?✔✔ Into the bloodstream.
What is a hormone?✔✔ A chemical messenger that travels through the blood to affect distant target cells.
Which gland is often referred to as the "master gland"?✔✔ The pituitary gland.
What part of the brain controls the pituitary gland?✔✔ The hypothalamus. 1 / 3
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What type of feedback mechanism most commonly regulates hormone levels?✔✔ Negative feedback.
Which gland produces melatonin?✔✔ The pineal gland.
What is the role of melatonin in the body?✔✔ To regulate sleep-wake cycles.
Which hormone lowers blood glucose levels?✔✔ Insulin.
Which hormone raises blood glucose levels?✔✔ Glucagon.
Where is insulin produced?✔✔ In the pancreas. 2 / 3
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Which gland sits on top of the kidneys?✔✔ The adrenal glands.
What hormone does the adrenal medulla release in response to stress?✔✔ Epinephrine.
What hormone is known as the "fight-or-flight" hormone?✔✔ Adrenaline (epinephrine).
Which endocrine gland secretes thyroid hormones?✔✔ The thyroid gland.
What is the function of thyroid hormones?✔✔ To regulate metabolism.
What element is essential for the production of thyroid hormones?✔✔ Iodine.
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