Human (body) Defenses MCQs

These multiple-choice questions (MCQs) on human body defenses explores the various components and processes involved in the body’s immune response.

Topics covered include the immune system, including innate and adaptive immunity, white blood cells, antibodies, vaccination, and immune disorders.

Answering these MCQs will not only help you understand the mechanisms of immune defense but also deepen your knowledge of immunology and human biology.

Ready to explore the fascinating world of human body defenses? Let’s Start

MCQ on Human body Defenses

when you’re dealing with the reproduction of an alien invader. Your _ system springs into action, activating the cells necessary to fight the invasion

immune
digestive
circulatory
None of these

Correct Answer

immune

Your _ are the barriers that physically block access to your tissues and organs

skin and mucous membranes
pH of your stomach acid
Dendritic cells
phagocytes

Correct Answer

skin and mucous membranes

The _ is a chemical barrier that prevents microbial growth
skin and mucous membranes
pH of your stomach acid
Dendritic cells
phagocytes

Correct Answer

 pH of your stomach acid

Human body defenses refer to the intricate systems and mechanisms that protect the body from harmful pathogens, toxins, and foreign invaders.

These defenses are essential for maintaining health and preventing infections, diseases, and other illnesses.

_ patrol your body in search of microbes and alert your immune system of impending invasions

skin and mucous membranes
pH of your stomach acid
Dendritic cells
phagocytes

Correct Answer

Dendritic cells

_ are certain white blood cells that seek and destroy microbes that have successfully entered your body

skin and mucous membranes
pH of your stomach acid
Dendritic cells
phagocytes

Correct Answer

phagocytes

_ is the alarm call that gathers white blood cells to the site of an invasion and helps contain and destroy the microbes

skin and mucous membranes
pH of your stomach acid
Dendritic cells
Inflammation

Correct Answer

Inflammation

The mucus in your nose and throat and the hairs in your nose act as _ that trap microbes

harmones
filters
Protein transporters
None of these

Correct Answer

filters

Your _ screens your body fluids for the presence of microbes and destroys any it finds

Nervous system
lymphatic system
respiratory system
digestive system

Correct Answer

lymphatic system

_ is a built-in immune system that all humans have

innate immunity
adaptive immunity
Both of these
None of these

Correct Answer

 innate immunity

_ is the part of your immune system that develops as you encounter microbes

innate immunity
adaptive immunity
Both of these
None of these

Correct Answer

adaptive immunity

Certain cells of your immune system, called _ cells, remain in a semiactivated state after your first encounter with a microbe

memory
Epithelial
Cardiac
muscle

Correct Answer

memory

One example of an autoimmune disease is?

Arthritis
AIDS
cancer
smallpox

Correct Answer

Arthritis

In _____, the cells of the immune system attack the cells lining the joint spaces, causing inflammation and deterioration

AIDS
cancer
smallpox
Arthritis

Correct Answer

Arthritis

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