1. : What is the basic structural unit of the human body?
(A) Tissue
(B) Organ
(C) Cell
(D) System
2. : Which system is primarily responsible for transporting oxygen and nutrients throughout the body?
(A) Nervous system
(B) Endocrine system
(C) Circulatory system
(D) Digestive system
3. : What type of muscle tissue is involuntary and found in the walls of internal organs?
(A) Skeletal muscle
(B) Cardiac muscle
(C) Smooth muscle
(D) Connective tissue
4. : Which part of the brain is responsible for coordinating movement and balance?
(A) Cerebrum
(B) Cerebellum
(C) Brainstem
(D) Thalamus
5. : What is the primary function of red blood cells?
(A) Fight infections
(B) Clot blood
(C) Transport oxygen
(D) Regulate body temperature
6. : Which organ is responsible for filtering waste products from the blood?
(A) Heart
(B) Liver
(C) Kidney
(D) Lungs
7. : What is the largest muscle in the human body?
(A) Biceps brachii
(B) Quadriceps femoris
(C) Latissimus dorsi
(D) Gluteus maximus
8. : Which type of joint allows for the greatest range of motion?
(A) Hinge joint
(B) Pivot joint
(C) Ball-and-socket joint
(D) Saddle joint
9. : What is the primary role of the skeletal system?
(A) Produce hormones
(B) Protect organs and provide structure
(C) Aid in digestion
(D) Facilitate movement
10. : Which nutrient is primarily used by the body for energy during exercise?
(A) Proteins
(B) Carbohydrates
(C) Vitamins
(D) Minerals
11. : What is the term for the process of converting food into energy in the body?
(A) Metabolism
(B) Digestion
(C) Absorption
(D) Circulation
12. : Which part of the body is primarily responsible for respiration?
(A) Heart
(B) Lungs
(C) Stomach
(D) Liver
13. : What is the function of the diaphragm during breathing?
(A) It regulates heart rate
(B) It helps in digestion
(C) It contracts and relaxes to aid in inhalation and exhalation
(D) It filters blood
14. : Which hormone is released during physical activity to help regulate blood sugar levels?
(A) Insulin
(B) Glucagon
(C) Cortisol
(D) Adrenaline
15. : What is the primary function of ligaments in the body?
(A) Connect muscles to bones
(B) Connect bones to other bones
(C) Support organs
(D) Store fat
16. : Which muscle group is primarily responsible for flexing the elbow?
(A) Triceps
(B) Biceps
(C) Deltoids
(D) Pectorals
17. : What is the primary function of the integumentary system?
(A) Protect the body and regulate temperature
(B) Produce hormones
(C) Aid in digestion
(D) Support movement
18. : Which type of muscle is striated and voluntary?
(A) Smooth muscle
(B) Cardiac muscle
(C) Skeletal muscle
(D) Epithelial tissue
19. : Which part of the nervous system controls involuntary functions?
(A) Somatic nervous system
(B) Central nervous system
(C) Autonomic nervous system
(D) Peripheral nervous system
20. : What is the role of the endocrine system in the body?
(A) Control movements
(B) Regulate hormones and bodily functions
(C) Facilitate digestion
(D) Transport nutrients
21. : Which structure in the heart prevents the backflow of blood?
(A) Aorta
(B) Valve
(C) Septum
(D) Atrium
22. : What is the primary role of the respiratory system?
(A) Circulate blood
(B) Exchange gases
(C) Support movement
(D) Digest food
23. : Which type of blood vessel carries oxygenated blood away from the heart?
(A) Veins
(B) Arteries
(C) Capillaries
(D) Lymphatics
24. : What is the primary purpose of stretching exercises?
(A) Increase muscle mass
(B) Improve flexibility and range of motion
(C) Enhance strength
(D) Increase cardiovascular endurance
25. : Which bone is commonly referred to as the collarbone?
(A) Scapula
(B) Clavicle
(C) Sternum
(D) Humerus
26. : What type of cartilage is found in the joints?
(A) Hyaline cartilage
(B) Elastic cartilage
(C) Fibrocartilage
(D) Adipose tissue
27. : What is the primary role of the central nervous system?
(A) Regulate hormone levels
(B) Process and transmit information
(C) Support organs
(D) Transport nutrients
28. : Which system is responsible for the body’s response to stress?
(A) Immune system
(B) Nervous system
(C) Endocrine system
(D) Skeletal system
29. : What is the function of the adrenal glands?
(A) Produce insulin
(B) Regulate metabolism and stress response
(C) Filter blood
(D) Produce bile
30. : Which component of blood is responsible for clotting?
(A) Red blood cells
(B) White blood cells
(C) Platelets
(D) Plasma
31. : What is the primary function of the large intestine?
(A) Absorb nutrients
(B) Eliminate waste
(C) Digest food
(D) Produce enzymes
32. : What is the role of the cerebrum in the brain?
(A) Control balance and coordination
(B) Process sensory information and higher cognitive functions
(C) Regulate heart rate and breathing
(D) Control reflexes
33. : Which of the following best describes the function of the skeletal muscles?
(A) Control involuntary movements
(B) Support posture and facilitate movement
(C) Produce hormones
(D) Filter toxins from the blood
34. : What is the primary function of the hypothalamus?
(A) Regulate emotions
(B) Control body temperature and hunger
(C) Process vision
(D) Coordinate movement
35. : Which organ is responsible for producing bile?
(A) Pancreas
(B) Liver
(C) Gallbladder
(D) Stomach
36. : What is the primary function of the sensory receptors in the body?
(A) Control muscle contractions
(B) Detect changes in the environment
(C) Produce hormones
(D) Regulate blood flow
37. : Which type of joint allows for rotational movement?
(A) Hinge joint
(B) Ball-and-socket joint
(C) Pivot joint
(D) Saddle joint
38. : What is the primary role of the spinal cord?
(A) Process sensory information
(B) Relay signals between the brain and the body
(C) Control voluntary movements
(D) Produce hormones
39. : What is the function of the small intestine?
(A) Absorb water
(B) Digest food and absorb nutrients
(C) Eliminate waste
(D) Produce bile
40. : Which type of muscle is found only in the heart?
(A) Skeletal muscle
(B) Smooth muscle
(C) Cardiac muscle
(D) Epithelial tissue
41. : What is the primary purpose of the immune system?
(A) Transport oxygen
(B) Protect against disease
(C) Regulate hormones
(D) Facilitate digestion