Which of the following describes about the first line of defense?

It involves lymphocytes in the blood.

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It involves phagocytic white blood cells.

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In involves skin and mucous membrane.

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It produces antibodies that destroy bacteria and viruses.

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Solution

The correct option is C In involves skin and mucous membrane.
Skin and mucous membrane act as a physical barrier preventing penetration by microbes.

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Similar questions

Which one of the following blood cells is involved in antibody production.
(a) B - lymphocytes (b) T - lymphocytes
(c) RBC (d) neutrophils

Q. Which one of the following blood cells is involved in antibody production?

Match the given cells with their characteristics.
$\begin{matrix} Column I & Column II (i) Monocyte & (a) secretes serotonin, histamine, heparin (i i) Neutrophil & (b) forms about 20% of WBC is involved in immune response (i i i) B-Lymphocytes & (c) most abundant white blood cells, phagocytic (i v) Basophil & (d) life span of 3 days, produces antibodies \end{matrix}$

Q. Note the following.

(A) Skin, (B) Phagocytes, (C) B-cells, (D) Inflammation, (E) Antibodies, (F) T-cells, (G) Fever, (H) Complementary proteins, (I) NK-cells, (J) Secretions.

Identify the factors involved in second line of defence.

Q. Note the following:
(A) Skin (B) Phagocytes (C) B-cells (D) Inflammation (E) Antibodies (F) T-cells (G) Fever (H) Antimicrobial proteins (I) NK-cells (J) Secretions
Identify the factors involved in

2^{n d}

line of defence.

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Which of the following describes about the first line of defense?

The correct option is C In involves skin and mucous membrane.Skin and mucous membrane act as a physical barrier preventing penetration by microbes.

The correct option is C In involves skin and mucous membrane.
Skin and mucous membrane act as a physical barrier preventing penetration by microbes.