Q. What hormone is primarily responsible for the fight-or-flight response?
-
A.
Cortisol
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B.
Adrenaline
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C.
Insulin
-
D.
Thyroxine
Solution
Adrenaline, also known as epinephrine, is released by the adrenal glands during stress, preparing the body for a rapid response.
Correct Answer:
B
— Adrenaline
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Q. What is the function of the hormone leptin?
-
A.
Stimulates appetite
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B.
Inhibits appetite
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C.
Regulates blood sugar
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D.
Promotes fat storage
Solution
Leptin is a hormone produced by adipose (fat) tissue that helps to inhibit appetite and regulate energy balance.
Correct Answer:
B
— Inhibits appetite
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Q. What is the primary effect of parathyroid hormone (PTH)?
-
A.
Increase calcium levels in the blood
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B.
Decrease calcium levels in the blood
-
C.
Increase phosphate levels in the blood
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D.
Decrease phosphate levels in the blood
Solution
Parathyroid hormone (PTH) increases blood calcium levels by stimulating bone resorption and renal reabsorption of calcium.
Correct Answer:
A
— Increase calcium levels in the blood
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Q. What is the primary function of insulin in the body?
-
A.
Increase blood glucose levels
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B.
Decrease blood glucose levels
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C.
Stimulate protein synthesis
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D.
Promote fat breakdown
Solution
Insulin is a hormone produced by the pancreas that lowers blood glucose levels by facilitating the uptake of glucose into cells.
Correct Answer:
B
— Decrease blood glucose levels
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Q. What is the role of glucagon in glucose metabolism?
-
A.
Increases blood glucose levels
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B.
Decreases blood glucose levels
-
C.
Stimulates glycogen synthesis
-
D.
Inhibits fat breakdown
Solution
Glucagon is a hormone that raises blood glucose levels by promoting glycogen breakdown in the liver.
Correct Answer:
A
— Increases blood glucose levels
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Q. Which gland is responsible for the secretion of thyroid hormones?
-
A.
Pituitary gland
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B.
Adrenal gland
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C.
Thyroid gland
-
D.
Pancreas
Solution
The thyroid gland produces thyroid hormones, which regulate metabolism, growth, and development.
Correct Answer:
C
— Thyroid gland
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Q. Which hormone is involved in the regulation of the menstrual cycle?
-
A.
Testosterone
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B.
Estrogen
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C.
Cortisol
-
D.
Insulin
Solution
Estrogen plays a key role in regulating the menstrual cycle and is produced primarily by the ovaries.
Correct Answer:
B
— Estrogen
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Q. Which hormone is primarily responsible for milk production in breastfeeding?
-
A.
Oxytocin
-
B.
Prolactin
-
C.
Estrogen
-
D.
Progesterone
Solution
Prolactin is the hormone responsible for stimulating milk production in the mammary glands during breastfeeding.
Correct Answer:
B
— Prolactin
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Q. Which hormone is secreted by the adrenal cortex?
-
A.
Adrenaline
-
B.
Cortisol
-
C.
Insulin
-
D.
Thyroxine
Solution
Cortisol is a steroid hormone produced by the adrenal cortex that helps regulate metabolism and stress response.
Correct Answer:
B
— Cortisol
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Q. Which hormone regulates water balance in the body?
-
A.
Aldosterone
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B.
Antidiuretic hormone (ADH)
-
C.
Cortisol
-
D.
Thyroid hormone
Solution
Antidiuretic hormone (ADH) helps regulate water balance by promoting water reabsorption in the kidneys.
Correct Answer:
B
— Antidiuretic hormone (ADH)
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