Biology · General Awareness
Human Endocrine System
1,530 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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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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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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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.
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Alpha cells
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Beta cells
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Delta cells
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PP cells
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Epsilon cells
E
Correct answer
Explanation
Epsilon cells are endocrine cells found in the Islets of Langerhans and produce the hormone ghrelin. They were recently discovered in mice.
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motilin
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gastric inhibitory peptide
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cholecystokinin (CCK)
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secretin
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gastrin
D
Correct answer
Explanation
Secretin is secreted in the duodenum and signals the secretion of sodium bicarbonate in the pancreas, and it stimulates the bile secretion in the liver. This hormone responds to the acidity of the chyme.
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Co-enzyme
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Hormone
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Enzyme
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Antibiotic
B
Correct answer
Explanation
Insulin is a hormone secreted by β cells of pancreas. It controls blood sugar level.
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Gastrin
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Secretin
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Cholecystokinin
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Motilin
B
Correct answer
Explanation
Secretin is in the duodenum and signals the secretion of sodium bicarbonate in the pancreas and it stimulates the bile secretion in the liver. This hormone responds to the acidity of the chyme.
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Adrenaline
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Thyroxine
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ADH
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Oxytocin
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-
A
Correct answer
Explanation
Adrenaline triggers the body's fight-or-flight response during emergencies.It is secreted from Adrenal medulla.
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Adrenaline
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Noradrenaline
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Parathormone
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Thyroxine
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-
C
Correct answer
Explanation
Increase in bleeding time and delay in blood coagulation is controlled by calcium. Calcium regulation is controlled by parathormone secreted by parathyroid glands.
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energy producing agents
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food storage products
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neurotransmitters
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energy storing substances
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-
C
Correct answer
Explanation
Neurotransmitters, also known as chemical messengers, are endogenous chemicals that enable neurotransmission. They transmit signals across a chemical synapse, such as a neuromuscular junction, from one neuron (nerve cell) to another target neuron, muscle cell or gland cell (such as adrenaline or noradrenaline).
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they enter into target cells and bind with specific receptor and activate specific genes to form proteins
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they bind to cell membrane
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they catalyse formation of c AMP
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None of the above
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A
Correct answer
Explanation
Correct Answer: they enter into target cells and bind with specific receptor and activate specific genes to form proteins