EXAM QUESTIONS & DETAILED ANSWERS
1. What is the largest bone in the human body?
A. Tibia
B. Femur
C. Humerus
D. Fibula
✅ Answer: B. Femur
Explanation: The femur supports body weight and forms the thigh.
2. The heart is located in which cavity?
A. Abdominal
B. Thoracic
C. Cranial
D. Pelvic
✅ Answer: B. Thoracic
Explanation: The heart sits within the mediastinum of the thoracic cavity.
3. How many chambers does the human heart have?
A. 2
B. 3
C. 4
D. 5
✅ Answer: C. 4
Explanation: The heart has two atria and two ventricles.
4. Which type of joint is the shoulder joint?
A. Hinge
B. Ball-and-socket
C. Pivot
D. Saddle
,✅ Answer: B. Ball-and-socket
Explanation: This joint allows movement in multiple directions.
5. Which muscle is responsible for flexing the forearm at the elbow?
A. Biceps brachii
B. Triceps brachii
C. Deltoid
D. Pectoralis major
✅ Answer: A. Biceps brachii
Explanation: The biceps brachii contracts to bend the elbow.
6. Which part of the brain controls balance and coordination?
A. Cerebrum
B. Cerebellum
C. Medulla oblongata
D. Hypothalamus
✅ Answer: B. Cerebellum
Explanation: The cerebellum coordinates voluntary movements and balance.
7. Which organ produces insulin?
A. Liver
B. Pancreas
C. Gallbladder
D. Kidney
✅ Answer: B. Pancreas
Explanation: Beta cells in the pancreas produce insulin to regulate blood sugar.
8. Which structure carries oxygenated blood from the lungs to the heart?
A. Pulmonary artery
B. Pulmonary vein
C. Aorta
D. Vena cava
,✅ Answer: B. Pulmonary vein
Explanation: Pulmonary veins transport oxygen-rich blood to the left atrium.
9. Which of the following is a long bone?
A. Sternum
B. Radius
C. Carpals
D. Patella
✅ Answer: B. Radius
Explanation: Long bones are longer than they are wide and contain a shaft and two ends.
10. What is the functional unit of the kidney?
A. Nephron
B. Glomerulus
C. Ureter
D. Renal pelvis
✅ Answer: A. Nephron
Explanation: Nephrons filter blood to form urine.
11. Which cranial nerve is responsible for vision?
A. Optic nerve
B. Olfactory nerve
C. Facial nerve
D. Vagus nerve
✅ Answer: A. Optic nerve
Explanation: The optic nerve transmits visual information from the retina to the brain.
12. Which type of muscle is involuntary and found in the walls of internal organs?
A. Skeletal
B. Cardiac
C. Smooth
D. Striated
, ✅ Answer: C. Smooth
Explanation: Smooth muscles contract involuntarily to move substances through organs.
13. The largest artery in the human body is the:
A. Pulmonary artery
B. Aorta
C. Carotid artery
D. Femoral artery
✅ Answer: B. Aorta
Explanation: The aorta carries oxygenated blood from the heart to the body.
14. Which bone forms the forehead?
A. Parietal
B. Occipital
C. Frontal
D. Temporal
✅ Answer: C. Frontal
Explanation: The frontal bone forms the anterior portion of the skull.
15. What is the main function of red blood cells?
A. Fight infection
B. Transport oxygen
C. Clot blood
D. Produce hormones
✅ Answer: B. Transport oxygen
Explanation: Red blood cells contain hemoglobin, which binds oxygen.
16. Which part of the nervous system controls voluntary movement?
A. Autonomic nervous system
B. Somatic nervous system
C. Sympathetic system
D. Parasympathetic system