Biology ยท General Awareness
Human Endocrine System
1,395 Questions
The human endocrine system comprises glands that secrete hormones to regulate bodily functions like metabolism, growth, and reproduction. Competitive exams frequently test the specific roles of hormones such as adrenaline, insulin, and progesterone. Use these questions to master the locations and functions of different hormones.
Hormone functionsIslets of LangerhansFight or flight responseBlood pressure regulationFemale sex hormonesWater soluble hormones
Human Endocrine System Questions
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fetal pituitary gland
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developing trophoblast
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maternal pituitary gland
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ovarian corpus luteum
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graafian follicle
B
Correct answer
Explanation
After the conception and implantation have occurred, the developing embryonic trophoblast secretes hCG which acts like luteinizing hormone to maintain support of the corpus luteum.
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Progesterone
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Relaxin
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Lactogen
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Estradiol
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-
B
Correct answer
Explanation
Relaxin is a hormone produced by the ovary and the placenta with important effects in the female reproductive system and during pregnancy.
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Alpha cells
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Beta cells
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Delta cells
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Gamma cells
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-
A
Correct answer
Explanation
They make up to 20% of the human islet cells synthesising and secreting the peptide hormone glucagon, which elevates the glucose levels in the blood.
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Aldosterone
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Noradrenaline
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Melatonin
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Serotonin
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-
C
Correct answer
Explanation
The contraction of melanophores is regulated by melatonin.
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MSH
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Aldosterone
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ICSH
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Somatostatin
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ACTH
A
Correct answer
Explanation
MSH or Melanocyte stimulating hormone is the hormone made up of long chain peptides and targets the melanocyte cells present in the skin.
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Somatotropin
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MSH
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ADH
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TSH
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Oxytocin
B
Correct answer
Explanation
MSH or Melanocyte stimulating hormone is the hormone made up of long chain peptides and is secreted by the intermediate lobe of pituitary.
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Pituitary gland
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Parathyroid
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Pineal gland
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Adrenal
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Hypothalamus
B
Correct answer
Explanation
The major hormonal secretion of the parathyroid gland is known as parathormone or Collip's hormone.
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Somatotropin
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Progesterone
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Thyroxine
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Epinephrine
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Insulin
D
Correct answer
Explanation
It is stimulated by the sympathetic nervous system for meeting an emergency.
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Glucagon
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Gastrin
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Insulin
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Somatostatin
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Pancreatic polypeptide
D
Correct answer
Explanation
It is released by the delta cells of the islets of Langerhans and keeps a check on the excessive secretion of the alpha and beta cells.
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Parathyroid gland
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Pineal gland
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Adrenal gland
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Placenta
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Pituitary
C
Correct answer
Explanation
It is a double gland fitted over the upper ends of kidneys and has two parts, namely adrenal cortex (mesodermal origin) and adrenal medulla (ectodermal origin). These parts are functionally unrelated.
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Testosterone
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hCG
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Relaxin
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Human placental lactogen
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Estrogen
B
Correct answer
Explanation
hCG (Human chorionic gonadotropin) stimulates progesterone release from the corpus luteum and maintains it.
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Villikinin
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Pancreozymin
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Atrial natriuretic factor
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Gastrin
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Renin
C
Correct answer
Explanation
Atrial natriuretic factor is the hormone secreted by heart. It helps in maintaining blood volume and reducing blood pressure.
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Liver
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Hypothalamus
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Pituitary
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Pancreas
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Placenta
E
Correct answer
Explanation
It is an endocrine gland of mesodermal origin and helps in maintenance of corpus luteum and the continued secretion of progesterone.
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Norepinephrine
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Cortisone
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Aldosterone
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Cortisol
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Estrogen
C
Correct answer
Explanation
It is secreted by the adrenal gland and its target tissue is kidney.
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Pancreozymin
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Villikinin
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Cortisol
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Insulin
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Aldosterone
E
Correct answer
Explanation
It is a mineralocorticoid secreted by the zona glomerulosa of adrenal cortex. It is the main mineralocorticoid of human body.