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Question 1

What is the primary function of the endocrine system?
A) Regulate movement
B) Produce hormones
C) Control body temperature
D) Process sensory information

Answer 1

Answer: B) Produce hormones

Question 2

Which gland is known as the “master gland” of the endocrine system?
A) Thyroid gland
B) Pineal gland
C) Pituitary gland
D) Adrenal gland

Answer 2

Answer: C) Pituitary gland

Question 3

What hormone is primarily responsible for regulating metabolism?
A) Insulin
B) Thyroxine
C) Cortisol
D) Adrenaline

Answer 3

Answer: B) Thyroxine

Question 4

Which gland produces insulin?
A) Thyroid gland
B) Pancreas
C) Adrenal gland
D) Pituitary gland

Answer 4

Answer: B) Pancreas

Question 5

The adrenal glands are located on top of which organs?
A) Lungs
B) Kidneys
C) Liver
D) Heart

Answer 5

Answer: B) Kidneys

Question 6

Which hormone is released in response to stress?
A) Insulin
B) Estrogen
C) Cortisol
D) Progesterone

Answer 6

Answer: C) Cortisol

Question 7

What is the role of oxytocin in the body?
A) Regulates blood sugar levels
B) Stimulates uterine contractions during childbirth
C) Controls the sleep-wake cycle
D) Influences metabolism

Answer 7

Answer: B) Stimulates uterine contractions during childbirth

Question 8

The thyroid gland produces which hormone that regulates calcium levels in the blood?
A) Calcitonin
B) Parathyroid hormone
C) Insulin
D) Glucagon

Answer 8

Answer: A) Calcitonin

Question 9

Which hormone is responsible for the “fight or flight” response?
A) Cortisol
B) Insulin
C) Adrenaline
D) Thyroxine

Answer 9

Answer: C) Adrenaline

Question 10

What is the main function of parathyroid hormone?
A) Increase blood calcium levels
B) Lower blood sugar levels
C) Regulate metabolism
D) Stimulate growth

Answer 10

Answer: A) Increase blood calcium levels

Question 11

Which gland is responsible for regulating the body’s circadian rhythms?
A) Thyroid gland
B) Pituitary gland
C) Pineal gland
D) Adrenal gland

Answer 11

Answer: C) Pineal gland

Question 12

What type of hormones are steroids?
A) Water-soluble hormones
B) Lipid-soluble hormones
C) Protein-based hormones
D) Peptide hormones

Answer 12

Answer: B) Lipid-soluble hormones

Question 13

Which hormone is primarily involved in regulating water balance in the body?
A) Antidiuretic hormone (ADH)
B) Aldosterone
C) Insulin
D) Thyroxine

Answer 13

Answer: A) Antidiuretic hormone (ADH)

Question 14

The pancreas has both endocrine and exocrine functions. Which is NOT an endocrine function?
A) Producing insulin
B) Producing glucagon
C) Secreting digestive enzymes
D) Regulating blood sugar levels

Answer 14

Answer: C) Secreting digestive enzymes

Question 15

What is the effect of glucagon on blood glucose levels?
A) Lowers blood glucose levels
B) Raises blood glucose levels
C) Stabilizes blood glucose levels
D) Has no effect on blood glucose levels

Answer 15

Answer: B) Raises blood glucose levels

Question 16

Which hormone is responsible for the development of male secondary sexual characteristics?
A) Estrogen
B) Progesterone
C) Testosterone
D) Luteinizing hormone

Answer 16

Answer: C) Testosterone

Question 17

The main role of the thymus gland is to:
A) Regulate metabolism
B) Produce insulin
C) Support immune function
D) Control stress responses

Answer 17

Answer: C) Support immune function

Question 18

What triggers the release of hormones from the anterior pituitary gland?
A) Nerve signals
B) Blood hormone levels
C) Hypothalamic hormones
D) Feedback loops

Answer 18

Answer: C) Hypothalamic hormones

Question 19

Which hormone primarily regulates the menstrual cycle?
A) Testosterone
B) Estrogen
C) Progesterone
D) Both B and C

Answer 19

Answer: D) Both B and C

Question 20

Which condition is caused by an underactive thyroid?
A) Hyperthyroidism
B) Hypothyroidism
C) Diabetes
D) Addison’s disease

Answer 20

Answer: B) Hypothyroidism

Question 21

What is the main effect of aldosterone?
A) Increase blood sugar
B) Regulate blood pressure by increasing sodium reabsorption
C) Stimulate muscle growth
D) Enhance immune response

Answer 21

Answer: B) Regulate blood pressure by increasing sodium reabsorption

Question 22

Which hormone stimulates the production of milk in nursing mothers?
A) Oxytocin
B) Prolactin
C) Estrogen
D) Luteinizing hormone

Answer 22

Answer: B) Prolactin

Question 23

What role do the testes play in the endocrine system?
A) Produce testosterone
B) Regulate insulin levels
C) Control stress responses
D) Produce estrogen

Answer 23

Answer: A) Produce testosterone

Question 24

The adrenal cortex produces which type of hormones?
A) Peptide hormones
B) Steroid hormones
C) Amine hormones
D) Protein hormones

Answer 24

Answer: B) Steroid hormones

Question 25

What is the primary function of insulin?
A) Increase blood glucose levels
B) Decrease blood glucose levels
C) Increase energy production
D) Regulate water balance

Answer 25

Answer: B) Decrease blood glucose levels

Question 26

Which hormone regulates blood pressure and fluid balance?
A) Insulin
B) Cortisol
C) Aldosterone
D) Thyroxine

Answer 26

Answer: C) Aldosterone

Question 27

What is the effect of estrogen on the female reproductive system?
A) Promotes development of female secondary sexual characteristics
B) Stimulates production of testosterone
C) Inhibits ovulation
D) Regulates blood sugar levels

Answer 27

Answer: A) Promotes development of female secondary sexual characteristics

Question 28

What gland is responsible for the fight or flight response through hormone release?
A) Thyroid gland
B) Adrenal gland
C) Pituitary gland
D) Pancreas

Answer 28

Answer: B) Adrenal gland

Question 29

Which hormone is secreted by the posterior pituitary gland?
A) Growth hormone
B) Oxytocin
C) Adrenocorticotropic hormone
D) Thyroid-stimulating hormone

Answer 29

Answer: B) Oxytocin

Question 30

What is the function of luteinizing hormone (LH)?
A) Stimulates ovulation
B) Regulates blood sugar
C) Increases metabolism
D) Promotes sleep

Answer 30

Answer: A) Stimulates ovulation

Question 31

What natural effect does oxytocin have during intimate physical contact?
A) Increases stress levels
B) Promotes relaxation and reduces stress
C) Decreases blood flow
D) Inhibits hormone production

Answer 31

Answer: B) Promotes relaxation and reduces stress