Blood Composition and Endocrine System Quiz

Test your knowledge of hormones, blood components, and endocrine system functions with these quiz questions on endocrinology.

#1

Which of the following is a major component of blood?

Water
Iron
Vitamin C
Red blood cells
#2

Which hormone is responsible for regulating blood sugar levels?

Insulin
Estrogen
Testosterone
Adrenaline
#3

What is the function of platelets in the blood?

Transport oxygen
Clotting
Fight infections
Regulate blood pressure
#4

Which hormone is responsible for the regulation of sodium and potassium levels in the body?

Aldosterone
Calcitonin
Parathyroid hormone
Thyroxine
#5

What is the function of white blood cells in the body?

Transport oxygen
Clotting
Fight infections
Regulate blood pressure
#6

Which hormone is responsible for the regulation of calcium levels in the blood?

Insulin
Calcitonin
Parathyroid hormone
Thyroxine
#7

What is the primary function of erythropoietin (EPO)?

Regulation of calcium levels
Stimulation of red blood cell production
Control of heart rate
Promotion of bone growth
#8

Which gland is often referred to as the 'master gland'?

Thyroid gland
Adrenal gland
Pituitary gland
Pancreas
#9

Which organ secretes insulin and glucagon?

Pancreas
Liver
Kidney
Thyroid gland
#10

Which hormone is responsible for regulating the sleep-wake cycle?

Cortisol
Growth hormone
Melatonin
Estrogen
#11

Which hormone is known as the 'stress hormone'?

Cortisol
Aldosterone
Adrenaline
Insulin
#12

What is the main function of the thyroid hormone thyroxine?

Regulation of blood sugar levels
Stimulation of bone growth
Control of metabolism
Promotion of red blood cell production
#13

Which hormone is responsible for regulating the body's metabolism?

Thyroxine
Cortisol
Melatonin
Growth hormone
#14

Which hormone is produced by the adrenal glands and prepares the body for 'fight or flight' response?

Insulin
Cortisol
Adrenaline
Thyroxine
#15

Which gland produces the hormone progesterone?

Adrenal gland
Pineal gland
Ovaries
Testes
#16

What is the primary function of the hormone testosterone?

Regulation of menstrual cycle
Stimulation of breast development
Promotion of secondary sexual characteristics in males
Control of blood calcium levels
#17

Which hormone is responsible for promoting the growth and repair of tissues in the body?

Estrogen
Testosterone
Growth hormone
Prolactin

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