Free Human Body and Health MCQs with Answers

531. Dengue Fever is also called___________?

• A. Black Fever
• B. Breakbone Fever
• C. Plasmodium Fever
• D. Remittent Fever

Explanation: Dengue is popularly called breakbone fever because severe muscle and joint pain can make the body feel as though its bones are breaking. It is caused by a dengue virus transmitted mainly by Aedes mosquitoes.

532. Pathology is the study of____________?

• A. Ethics
• B. Disease
• C. Future
• D. Cancer

Explanation: Pathology examines diseases, including their causes, development, and effects on tissues and organs. Cancer is one subject within pathology, not its complete definition.

533. Hepatitis is a disease of which of the following organ?

• A. Heart
• B. Liver
• C. Lungs
• D. Brain

Explanation: Hepatitis means inflammation of the liver, most commonly caused by hepatitis viruses, although alcohol and other factors can also cause it. The heart, lungs, and brain are not the organ named by the term.

534. Which of the following female mosquito is the cause of Dengue fever?

• A. Aedes Aegypteis
• B. Anophilies
• C. Barinohils
• D. N.O.A

Explanation: Dengue is mainly transmitted by the female Aedes aegypti mosquito, which needs blood for egg development. The option's spelling is incorrect, but it clearly refers to Aedes aegypti.

535. Segmented Worms take breath through:_________?

• A. Mouth
• B. Nose
• C. Moist Skin
• D. Head

Explanation: Segmented worms such as earthworms breathe through their moist skin, where oxygen diffuses into the blood and carbon dioxide diffuses out. Their skin must stay moist for this exchange to occur.

536. Which are the largest of the white blood cells?

• A. lymphocytes
• B. eosinophils
• C. basophils
• D. monocytes

Explanation: Monocytes are the largest normal white blood cells in the blood and can develop into macrophages after entering tissues. Lymphocytes, eosinophils, and basophils are generally smaller.

537. The outermost layer of skin is the__________?

• A. endodermis
• B. dermis
• C. epidermis
• D. hypodermis

Explanation: The epidermis is the skin's outer protective layer, while the dermis lies beneath it and contains vessels, nerves, and glands. The hypodermis is deeper still and is mainly fatty connective tissue.

538. Types of bones in human body are: Long, short, irregular and ____________?

• A. Flat
• B. Medium
• C. Regular
• D. Rough

Explanation: The standard shape-based classification of bones is long, short, flat, and irregular. Flat bones include the skull bones and sternum, while the other choices are not standard bone categories.

539. In human body there are_________________kinds of bones?

• A. 3
• B. 4
• C. 5
• D. 6

Explanation: By shape, bones are commonly grouped into four classes: long, short, flat, and irregular. Some detailed classifications add sesamoid or sutural bones, but the basic textbook list has four.

540. Fatal degenerative lung disease caused by particulate asbestos is referred to as _____________?

• A. asbestosis
• B. asthma
• C. allergy
• D. sinusitis

Explanation: Asbestosis is a progressive lung disease caused by inhaling asbestos fibres, which scar lung tissue and reduce breathing capacity. Asthma and sinusitis have different causes and affected airways.