Free Human Body and Health MCQs with Answers

561. The amount of energy required by the children of age between one to three years is___________?

• A. 300 k Calories
• B. 600 k Calories
• C. 900 k Calories
• D. 1200 k Calories

Explanation: Traditional nutrition tables commonly assign about 1,200 kilocalories per day to children aged one to three years. Actual needs vary with body size, activity, growth, and health, but 1,200 is the intended textbook value.

562. Oranges are rich source of____________?

• A. Carbohydrates
• B. Fats
• C. Proteins
• D. Vitamins

Explanation: Oranges are especially known for vitamin C, although they also contain carbohydrates and other nutrients. Vitamins, rather than fats or proteins, are the intended rich source here.

563. Most drugs are excreted through_____________?

• A. Kidney
• B. Skin
• C. Gallbladder
• D. Lungs

Explanation: The kidneys filter many drugs and their breakdown products from the blood and remove them in urine. Some substances also leave through bile, lungs, or sweat, but the kidneys are the main route for most drugs.

564. The pancreas secrets___________?

• A. Insulin
• B. Vitamin A
• C. Bile juice
• D. none of these

Explanation: The pancreas produces insulin, a hormone that helps cells absorb glucose and keeps blood sugar within a normal range. Bile is made by the liver, not the pancreas.

565. What does TCM stand for in medical terms?

• A. Techno Circuit Module
• B. Traditional Chinese medicine
• C. Tetra Carbon Mono oxide
• D. Tele Communication Management

Explanation: TCM commonly stands for Traditional Chinese Medicine, a system involving practices such as acupuncture and herbal treatment. The other expansions are not medical terms.

566. Blood which heart pumps to lungs is__________?

• A. deoxygenated blood
• B. lymph fluid
• C. atria blood
• D. oxygenated blood

Explanation: The right side of the heart pumps deoxygenated blood to the lungs through the pulmonary artery, where it releases carbon dioxide and gains oxygen. Oxygenated blood returns to the left side of the heart.

567. The scientific study of teeth is called ____________?

• A. Odontology
• B. Ornithology
• C. Orthoepy
• D. Pedagogy

Explanation: Odontology is the scientific study of teeth and their diseases and treatment. Ornithology studies birds, while pedagogy concerns teaching.

568. The Shortest (smallest) bone in human body is___________?

• A. Stapes
• B. Tibia
• C. Femur
• D. Humerus

Explanation: The stapes is the smallest bone in the human body and lies in the middle ear. It transmits vibrations from the other ear ossicles to the inner ear.

569. The longest bone in human body is___________?

• A. Ulna
• B. Tibia
• C. Femur
• D. Humerus

Explanation: The femur, or thigh bone, is the longest and one of the strongest bones in the human body. The tibia, ulna and humerus are shorter bones of the leg or arm.

570. How many teeth are there in human mouth?

• A. 30
• B. 33
• C. 32
• D. 31Chemistry

Explanation: A complete adult human dentition normally contains 32 permanent teeth, including four wisdom teeth. Children have 20 primary teeth, so the question assumes an adult mouth.