1. Which of the following is the functional unit of the kidney?
A) Nephron
B) Glomerulus
C) Renal pelvis
D) Loop of Henle
Answer: A) Nephron
Rationale: The nephron is the functional unit of the kidney, responsible for filtration,
reabsorption, and secretion. The glomerulus is part of the nephron, but the nephron itself
performs all of the filtering and urine formation.
2. Which of the following structures stores bile produced by the liver?
A) Gallbladder
B) Pancreas
C) Duodenum
D) Appendix
Answer: A) Gallbladder
Rationale: The gallbladder stores bile produced by the liver, releasing it into the small intestine
to aid in the digestion of fats.
3. Which type of blood vessel carries blood away from the heart?
A) Arteries
B) Veins
C) Capillaries
D) Venules
Answer: A) Arteries
Rationale: Arteries are blood vessels that carry oxygenated blood away from the heart, except
for the pulmonary artery, which carries deoxygenated blood to the lungs.
4. Which structure in the brain is primarily responsible for regulating basic body
functions like heart rate and breathing?
A) Cerebrum
B) Cerebellum
, C) Medulla oblongata
D) Thalamus
Answer: C) Medulla oblongata
Rationale: The medulla oblongata controls autonomic functions such as heart rate, breathing,
and blood pressure.
5. Which hormone is produced by the pancreas to lower blood glucose levels?
A) Insulin
B) Glucagon
C) Adrenaline
D) Cortisol
Answer: A) Insulin
Rationale: Insulin, produced by the pancreas, helps to lower blood glucose levels by promoting
the uptake of glucose into cells.
6. Which of the following is the largest organ in the human body?
A) Brain
B) Liver
C) Skin
D) Heart
Answer: C) Skin
Rationale: The skin is the largest organ in the human body, covering and protecting the internal
structures and regulating body temperature.
7. Which structure of the heart prevents the backflow of blood into the left
atrium?
A) Pulmonary valve
B) Aortic valve
C) Tricuspid valve
D) Mitral valve
Answer: D) Mitral valve
Rationale: The mitral valve, also known as the bicuspid valve, prevents the backflow of blood
from the left ventricle into the left atrium.
A) Nephron
B) Glomerulus
C) Renal pelvis
D) Loop of Henle
Answer: A) Nephron
Rationale: The nephron is the functional unit of the kidney, responsible for filtration,
reabsorption, and secretion. The glomerulus is part of the nephron, but the nephron itself
performs all of the filtering and urine formation.
2. Which of the following structures stores bile produced by the liver?
A) Gallbladder
B) Pancreas
C) Duodenum
D) Appendix
Answer: A) Gallbladder
Rationale: The gallbladder stores bile produced by the liver, releasing it into the small intestine
to aid in the digestion of fats.
3. Which type of blood vessel carries blood away from the heart?
A) Arteries
B) Veins
C) Capillaries
D) Venules
Answer: A) Arteries
Rationale: Arteries are blood vessels that carry oxygenated blood away from the heart, except
for the pulmonary artery, which carries deoxygenated blood to the lungs.
4. Which structure in the brain is primarily responsible for regulating basic body
functions like heart rate and breathing?
A) Cerebrum
B) Cerebellum
, C) Medulla oblongata
D) Thalamus
Answer: C) Medulla oblongata
Rationale: The medulla oblongata controls autonomic functions such as heart rate, breathing,
and blood pressure.
5. Which hormone is produced by the pancreas to lower blood glucose levels?
A) Insulin
B) Glucagon
C) Adrenaline
D) Cortisol
Answer: A) Insulin
Rationale: Insulin, produced by the pancreas, helps to lower blood glucose levels by promoting
the uptake of glucose into cells.
6. Which of the following is the largest organ in the human body?
A) Brain
B) Liver
C) Skin
D) Heart
Answer: C) Skin
Rationale: The skin is the largest organ in the human body, covering and protecting the internal
structures and regulating body temperature.
7. Which structure of the heart prevents the backflow of blood into the left
atrium?
A) Pulmonary valve
B) Aortic valve
C) Tricuspid valve
D) Mitral valve
Answer: D) Mitral valve
Rationale: The mitral valve, also known as the bicuspid valve, prevents the backflow of blood
from the left ventricle into the left atrium.
