Endocrine System MCQs

  1. Which gland is often referred to as the “master gland” of the endocrine system?
    a) Thyroid gland
    b) Adrenal gland
    c) Pituitary gland
    d) Pineal glandAnswer: c) Pituitary gland
  2. Which hormone is primarily responsible for regulating metabolism and is produced by the thyroid gland?
    a) Insulin
    b) Cortisol
    c) Thyroxine (T4)
    d) EstrogenAnswer: c) Thyroxine (T4)
  3. Which hormone regulates blood glucose levels by promoting the uptake of glucose into cells?
    a) Glucagon
    b) Cortisol
    c) Insulin
    d) EpinephrineAnswer: c) Insulin
  4. What is the primary function of the parathyroid hormone (PTH)?
    a) To regulate blood pressure
    b) To decrease blood calcium levels
    c) To increase blood calcium levels
    d) To regulate the sleep-wake cycleAnswer: c) To increase blood calcium levels
  5. Which gland produces adrenaline and norepinephrine, hormones that are involved in the “fight or flight” response?
    a) Thyroid gland
    b) Adrenal gland
    c) Pancreas
    d) Pineal glandAnswer: b) Adrenal gland
  6. Which hormone is secreted by the pancreas and plays a key role in the regulation of metabolism and digestion?
    a) Glucagon
    b) Insulin
    c) Somatostatin
    d) All of the aboveAnswer: d) All of the above
  7. Which hormone, produced by the pineal gland, helps regulate sleep patterns?
    a) Melatonin
    b) Serotonin
    c) Cortisol
    d) AldosteroneAnswer: a) Melatonin
  8. What is the primary role of the antidiuretic hormone (ADH), also known as vasopressin?
    a) To regulate blood sugar levels
    b) To promote water reabsorption in the kidneys
    c) To stimulate thyroid hormone production
    d) To regulate calcium levelsAnswer: b) To promote water reabsorption in the kidneys
  9. Which hormone is involved in the regulation of the body’s circadian rhythm and is released in response to light?
    a) Cortisol
    b) Melatonin
    c) Progesterone
    d) TestosteroneAnswer: b) Melatonin
  10. Which hormone, produced by the adrenal cortex, helps regulate metabolism and stress responses?
    a) Aldosterone
    b) Cortisol
    c) Adrenaline
    d) NorepinephrineAnswer: b) Cortisol
  11. Which hormone is involved in the development and maintenance of secondary sexual characteristics in females?
    a) Testosterone
    b) Estrogen
    c) Progesterone
    d) FSH (Follicle-Stimulating Hormone)Answer: b) Estrogen
  12. What is the primary function of aldosterone, a hormone produced by the adrenal glands?
    a) To increase blood glucose levels
    b) To regulate sodium and potassium balance
    c) To stimulate the immune response
    d) To promote growthAnswer: b) To regulate sodium and potassium balance
  13. Which hormone is released by the ovaries and helps prepare the uterus for pregnancy?
    a) Luteinizing hormone (LH)
    b) Follicle-stimulating hormone (FSH)
    c) Progesterone
    d) Human chorionic gonadotropin (hCG)Answer: c) Progesterone
  14. Which hormone is involved in regulating the body’s response to stress and inflammation?
    a) Insulin
    b) Adrenaline
    c) Cortisol
    d) ThyroxineAnswer: c) Cortisol
  15. Which hormone stimulates the production of milk in the mammary glands?
    a) Oxytocin
    b) Prolactin
    c) Estrogen
    d) ProgesteroneAnswer: b) Prolactin

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