Free Human Body and Health MCQs with Answers

181. The major source of quick energy is ___________?

• A. Carbohydrates
• B. Minerals
• C. vitamins
• D. None of these

Explanation: Carbohydrates are quickly digested into glucose, the body's readily available fuel for immediate energy. Fats provide more stored energy, but they are used more slowly.

182. All the bones of the body make a frame called?

• A. Skelton
• B. Tissue
• C. Skull
• D. None of these

Explanation: The complete framework formed by all the bones is called the skeleton. The skull is only the bony structure protecting the brain, while tissue is a general body material.

183. Skin is _____ thick?

• A. 2mm
• B. 2cm
• C. 3mm
• D. 3cm

Explanation: Skin thickness varies by body region, but its commonly quoted average thickness is about 2 mm. It is much thinner than 2 cm, which is a frequent unit trap.

184. How many bones are in Human Skull?

• A. 22
• B. 25
• C. 26
• D. None of these

Explanation: An adult human skull is conventionally counted as 22 bones: 8 cranial bones and 14 facial bones. Small ear bones are usually counted separately in general anatomy questions.

185. How many bones in each hand?

• A. 26
• B. 27
• C. 28
• D. 30

Explanation: Each hand has 27 bones: 8 wrist bones, 5 palm bones and 14 finger bones. The 26-bone count belongs to each foot, not each hand.

186. how many bones in each foot ?

• A. 26
• B. 27
• C. 28
• D. 30Physics

Explanation: Each human foot contains 26 bones, including 7 tarsals, 5 metatarsals and 14 toe bones. The extra word “Physics” is unrelated to the question.

187. An average human heart beats about time in a minute?

• A. 72 times
• B. 85 times
• C. 90 times
• D. 120 times

Explanation: A resting adult heart beats roughly 60 to 100 times per minute, with about 72 beats per minute used as the traditional average. Exercise, age and health can change the rate.

188. the delicate lungs are protected by a cage that is called ______?

• A. luvcage
• B. Ribcage
• C. both A & B
• D. None of these

Explanation: The ribs and breastbone form the rib cage, which protects the delicate lungs and heart. “Luvcage” is simply a misspelling and is not an anatomical term.

189. An adult have permanent teeth?

• A. 30
• B. 40
• C. 50
• D. 32Biological Sciences

Explanation: A complete adult dentition normally has 32 permanent teeth, including four wisdom teeth. If wisdom teeth are absent or removed, the functional total may be 28.

190. A three year child has _______ teeth?

• A. 20
• B. 30
• C. 10
• D. None of these

Explanation: By about three years of age, children normally have all 20 primary, or milk, teeth. Permanent teeth begin replacing them later in childhood.