The skin and mucus membranes are which of the following? (A)) Innate defense B)

Question

The skin and mucus membranes are which of the following? (A)) Innate defense B) Adaptive defense C) Part of the reticuloendothelial defense D) None of the above Defenses of the epidermis include: A) dendritic cells B) dermicidins C) constant shedding and replacement of cells D all of the above Defenses of the conjunctiva include: A) lysozyme B lacrimal apparatus C) blinking D) all of the above The first step of phagocytosis of a microbe by a white blood cell is: A) phagolysosome formation B) engulfment C) expulsion D) recognition and adherence Which of the following is a second line defense? A) Granulocytes B) Transferrin C) Macrophages D) All of the above Which of the following is called a polymorphonuclear leukocyte? A. neutrophil B. B lymphocyte C. monocyte D. all of the above The ability of some white blood cells to squeeze through a capillary walls is: A. phagocytosis B. diapedesis C. erythropoiesis D. thrombopoiesis Monocytes and macrophages along with a few other specialized cells in key areas like blood walls, heart chambers, kidneys, lungs and the liver make up a phagocytic defense system called: A) The mononuclear phagocytic system B) The antigenic surveillance system C) Humoral immunity D) Cell-mediated immunity

Explanation / Answer

1.

Skin and mucous are components of the innate immune system.

They are non-specific.

So, option A is correct.

2.

Epidermis contains dendritic cells and dermicidins. It also constantly replaces old cells with new cells.

So, option D is correct.

3.

Eye conjunctiva is protected by lachrymal apparatus.

It is a component of the innate immune system.

So, option B is correct.

4.

The first step of phagocytosis includes activation, chemotaxis recognition and adherence.

So, option D is correct.

5.

The second line of defense is a non-specific innate immune response.

It includes macrophages, granulocytes and transferrin.

So, option D is correct.

6.

Neutrophills, basophils and eosinophils and are called polymorphonuclear leukocytes.

So, option A is correct.

7.

Diapedesis: Movement of some blood cells across capillaries.

So, option B is correct.

8.

Mononuclear phagocytic system includes monocytes, macrophages and Kupffer cells.

Functions: Phagocytic defense, replenishment of old blood cells, production of plasma proteins and clearance of heparin.

Location: Liver, lungs, kidney, and bone

So, option A is correct.

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