Question

Note the following:

$\left(a\right)$ Skin $\left(b\right)$ Phagocytes
$\left(c\right)$ B-cells $\left(d\right)$ Inflammation
$\left(e\right)$ Antibodies $\left(f\right)$ T-Cells
$\left(g\right)$ Fever $\left(h\right)$ Antimicrobial proteins
$\left(i\right)$ NK-Cells $\left(j\right)$ Secretions

Identify the factors involved in $2^{nd}$ line of defense.

• A. $\left(b\right),\left(d\right),\left(g\right)$ and $\left(i\right)$
• B. $\left(b\right),\left(c\right),\left(e\right)$ and $\left(i\right)$
• C. $\left(d\right),\left(f\right),\left(h\right)$ and $\left(j\right)$
• D. $\left(c\right),\left(e\right),\left(g\right)$ and $\left(h\right)$

Answer 1

The correct option is A $\left(b\right),\left(d\right),\left(g\right)$ and $\left(i\right)$

If pathogens are able to get past the first line of defense, for example, through a cut in your skin, an infection develops. The second line of defense is a group of cells, tissues and organs that work together to protect the body. In our bodies the second line of defense is non-specific immune responses which consists of - macrophages, neutrophils, interferons, and complement proteins. This line of defense also includes fever and inflammatory response as nonspecific defenses.
So, the correct option is A.