Endocrine System Multiple Choice Question
Endocrine System Multiple Choice Question
Here are 50 top MCQs based on the endocrine system with correct answers:
Which endocrine gland secretes the hormone insulin?
(A) Adrenal
(B) Pituitary
(C) Thyroid
(D) Pancreas
Correct Answer: (D) Pancreas
Which hormone is secreted by the adrenal gland?
(A) Insulin
(B) Adrenaline
(C) Thyroxine
(D) Estrogen
Correct Answer: (B) Adrenaline
Which gland secretes growth hormone?
(A) Pituitary
(B) Pancreas
(C) Thyroid
(D) Adrenal
Correct Answer: (A) Pituitary
Insulin is what type of hormone for controlling glucose levels?
(A) Catabolic
(B) Anabolic
(C) Oxytocic
(D) Lipolytic
Correct Answer: (B) Anabolic
Which organ is the main controller of the endocrine system?
(A) Heart
(B) Kidney
(C) Hypothalamus
(D) Liver
Correct Answer: (C) Hypothalamus
Which gland plays a crucial role in calcium homeostasis?
(A) Pituitary
(B) Thyroid
(C) Parathyroid
(D) Adrenal
Correct Answer: (C) Parathyroid
Which hormone mainly increases during pregnancy?
(A) Estrogen
(B) Progesterone
(C) Thyroxine
(D) Adrenaline
Correct Answer: (B) Progesterone
Which is the primary hormone that controls metabolic rate?
(A) Thyroxine
(B) Insulin
(C) Prolactin
(D) Glucagon
Correct Answer: (A) Thyroxine
Which gland secretes melatonin?
(A) Pancreas
(B) Pineal
(C) Pituitary
(D) Adrenal
Correct Answer: (B) Pineal
Which hormone levels increase during stress?
(A) Thyroxine
(B) Cortisol
(C) Insulin
(D) Prolactin
Correct Answer: (B) Cortisol
What is the primary function of endocrine glands?
(A) Blood circulation
(B) Hormone production
(C) Digestion
(D) Respiration
Correct Answer: (B) Hormone production
What is another name for the pituitary gland?
(A) Master gland
(B) Hormone gland
(C) Thyroid gland
(D) Glandula gland
Correct Answer: (A) Master gland
What is the main function of the hormone oxytocin?
(A) Blood sugar control
(B) Increasing blood pressure
(C) Contractions during childbirth
(D) Digestion
Correct Answer: (C) Contractions during childbirth
Where is the thyroid gland located?
(A) In the brain
(B) In the neck
(C) In the abdomen
(D) Near the heart
Correct Answer: (B) In the neck
Which disease can result from a deficiency of thyroid hormone?
(A) Hyperthyroidism
(B) Hypothyroidism
(C) Addison’s disease
(D) Diabetes
Correct Answer: (B) Hypothyroidism
What produces hormones?
(A) Nervous system
(B) Blood cells
(C) Endocrine glands
(D) Bones
Correct Answer: (C) Endocrine glands
What is the main function of glucagon?
(A) Increasing blood pressure
(B) Raising glucose levels
(C) Assisting in digestion
(D) Water balance
Correct Answer: (B) Raising glucose levels
Which hormone is secreted by both the nervous system and the endocrine system?
(A) Adrenaline
(B) Insulin
(C) Prolactin
(D) Thyroxine
Correct Answer: (A) Adrenaline
What is the function of the hormone prolactin?
(A) Assisting in digestion
(B) Milk production
(C) Contraction
(D) Blood sugar control
Correct Answer: (B) Milk production
Which is the smallest endocrine gland?
(A) Pituitary
(B) Pineal
(C) Thyroid
(D) Parathyroid
Correct Answer: (B) Pineal
Through what medium do hormones travel in the body?
(A) Nerves
(B) Blood
(C) Lymphatic system
(D) Bones
Correct Answer: (B) Blood
Which hormone controls water balance in the body?
(A) Adrenaline
(B) Vasopressin
(C) Glucagon
(D) Thyroxine
Correct Answer: (B) Vasopressin
What causes diabetes mellitus?
(A) Thyroxine deficiency
(B) Insulin deficiency
(C) Prolactin deficiency
(D) Adrenaline deficiency
Correct Answer: (B) Insulin deficiency
Addison’s disease is caused by the deficiency of which hormone?
(A) Thyroxine
(B) Insulin
(C) Cortisol
(D) Prolactin
Correct Answer: (C) Cortisol
Which gland secretes thyroxine?
(A) Pituitary
(B) Thyroid
(C) Pineal
(D) Pancreas
Correct Answer: (B) Thyroid
Which hormone regulates gonadotropins?
(A) FSH
(B) LH
(C) GnRH
(D) ACTH
Correct Answer: (C) GnRH
Which disease results from the excess of thyroid hormone?
(A) Hyperthyroidism
(B) Hypothyroidism
(C) Addison’s disease
(D) Diabetes
Correct Answer: (A) Hyperthyroidism
The pituitary gland is divided into which two parts?
(A) Adrenal and Parathyroid
(B) Anterior and Posterior
(C) Thyroid and Pineal
(D) Pancreas and Thyroid
Correct Answer: (B) Anterior and Posterior
What are the symptoms of hypothyroidism?
(A) Weight loss
(B) Weight gain
(C) High energy
(D) Increased heart rate
Correct Answer: (B) Weight gain
Which hormone affects the immune system?
(A) Insulin
(B) Cortisol
(C) Thyroxine
(D) Prolactin
Correct Answer: (B) Cortisol
Which hormone reduces blood glucose levels?
(A) Glucagon
(B) Insulin
(C) Adrenaline
(D) Cortisol
Correct Answer: (B) Insulin
Which gland is active during breastfeeding?
(A) Thyroid
(B) Pituitary
(C) Pineal
(D) Pancreas
Correct Answer: (B) Pituitary
Which gland controls the body’s metabolism?
(A) Thyroid
(B) Pituitary
(C) Pancreas
(D) Adrenal
Correct Answer: (A) Thyroid
Which hormone’s level is measured to check for diabetes?
(A) Insulin
(B) Glucagon
(C) Adrenaline
(D) Thyroxine
Correct Answer: (A) Insulin
What does melatonin affect?
(A) Sleep
(B) Digestion
(C) Blood pressure
(D) Respiration
Correct Answer: (A) Sleep
Which hormone increases uterine contractions?
(A) Adrenaline
(B) Prolactin
(C) Oxytocin
(D) Insulin
Correct Answer: (C) Oxytocin
Which element is required by the thyroid gland?
(A) Iron
(B) Iodine
(C) Calcium
(D) Magnesium
Correct Answer: (B) Iodine
Which hormone increases the production of red blood cells?
(A) Insulin
(B) Erythropoietin
(C) Thyroxine
(D) Prolactin
Correct Answer: (B) Erythropoietin
Which hormone increases calcium levels in bones?
(A) Parathyroid hormone
(B) Thyroxine
(C) Prolactin
(D) Insulin
Correct Answer: (A) Parathyroid hormone
Which hormone’s main function is to increase glucose in the blood?
(A) Insulin
(B) Glucagon
(C) Adrenaline
(D) Cortisol
Correct Answer: (B) Glucagon
Which hormone helps in milk production after childbirth?
(A) Adrenaline
(B) Oxytocin
(C) Prolactin
(D) Insulin
Correct Answer: (C) Prolactin
Where is the adrenal gland located?
(A) Above the kidneys
(B) Below the kidneys
(C) Near the heart
(D) In the abdomen
Correct Answer: (A) Above the kidneys
Which hormone increases physical activities?
(A) Adrenaline
(B) Insulin
(C) Thyroxine
(D) Prolactin
Correct Answer: (A) Adrenaline
Which hormone controls the body’s electrolyte balance?
(A) Aldosterone
(B) Thyroxine
(C) Insulin
(D) Prolactin
Correct Answer: (A) Aldosterone
Which hormone controls the menstrual cycle?
(A) Estrogen
(B) Thyroxine
(C) Prolactin
(D) Insulin
Correct Answer: (A) Estrogen
Which hormone reduces blood glucose levels?
(A) Adrenaline
(B) Insulin
(C) Prolactin
(D) Glucagon
Correct Answer: (B) Insulin
Which hormone helps maintain pregnancy?
(A) Estrogen
(B) Progesterone
(C) Thyroxine
(D) Insulin
Correct Answer: (B) Progesterone
Which hormone affects physical growth?
(A) Prolactin
(B) Growth hormone
(C) Adrenaline
(D) Glucagon
Correct Answer: (B) Growth hormone
Which hormone controls blood pressure?
(A) Adrenaline
(B) Vasopressin
(C) Prolactin
(D) Insulin
Correct Answer: (B) Vasopressin
Which hormone aids in digestion?
(A) Adrenaline
(B) Prolactin
(C) Insulin
(D) Glucagon
Correct Answer: (C) Insulin
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