1. Which organ is responsible for filtering blood and removing waste products?
(A) Liver
(B) Kidneys
(C) Heart
(D) Lungs
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2. What is the largest organ in the human body?
(A) Heart
(B) Brain
(C) Skin
(D) Liver
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3. Which part of the brain is responsible for regulating vital functions like breathing and heart rate?
(A) Cerebellum
(B) Medulla Oblongata
(C) Hippocampus
(D) Thalamus
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4. What is the function of the alveoli in the lungs?
(A) Pump blood to the heart
(B) Exchange oxygen and carbon dioxide
(C) Filter impurities from the air
(D) Produce mucus
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5. Which of the following is not a component of blood?
(A) Red Blood Cells (RBCs)
(B) White Blood Cells (WBCs)
(C) Plasma
(D) Enzymes
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6. What is the primary function of the small intestine?
(A) Absorption of nutrients
(B) Storing bile
(C) Digesting proteins
(D) Pumping blood
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7. Which bone is commonly referred to as the collarbone?
(A) Femur
(B) Tibia
(C) Radius
(D) Clavicle
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8. What is the role of red blood cells (RBCs) in the body?
(A) Carrying oxygen
(B) Fighting infection
(C) Clotting blood
(D) Producing antibodies
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9. Which muscle is responsible for involuntary contractions of the heart?
(A) Biceps
(B) Triceps
(C) Cardiac muscle
(D) Quadriceps
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10. Where are the sweat glands primarily located in the skin?
(A) Epidermis
(B) Dermis
(C) Subcutaneous tissue
(D) Hypodermis
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11. Which part of the digestive system is responsible for the breakdown of food using acids and enzymes?
(A) Stomach
(B) Liver
(C) Small intestine
(D) Large intestine
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12. What is the purpose of the lymphatic system in the body?
(A) Pumping blood
(B) Fighting infections and diseases
(C) Regulating body temperature
(D) Producing hormones
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13. Which bone is also known as the shinbone?
(A) Radius
(B) Femur
(C) Tibia
(D) Ulna
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14. What is the primary function of the pancreas?
(A) Regulating blood pressure
(B) Producing insulin and digestive enzymes
(C) Filtering toxins from the blood
(D) Storing bile
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15. Which part of the eye is responsible for controlling the amount of light that enters the pupil?
(A) Retina
(B) Cornea
(C) Iris
(D) Lens
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16. What is the main function of the respiratory system?
(A) Pumping blood
(B) Digesting food
(C) Exchanging oxygen and carbon dioxide
(D) Filtering waste from the blood
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17. Which gland regulates metabolism in the body?
(A) Thyroid gland
(B) Pituitary gland
(C) Adrenal gland
(D) Pancreas
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18. What is the purpose of the cerebrospinal fluid (CSF) in the central nervous system?
(A) Transporting oxygen to the brain
(B) Protecting and cushioning the brain and spinal cord
(C) Regulating body temperature
(D) Aiding in digestion
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19. Which bone in the human body is often referred to as the “thighbone”?
(A) Radius
(B) Femur
(C) Tibia
(D) Ulna
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20. What is the function of the eustachian tube in the ear?
(A) Balancing air pressure between the ear and the environment
(B) Amplifying sound waves
(C) Regulating body temperature
(D) Transmitting signals to the brain
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