Non-specific defence mechanisms

Which of the following can produce secretion that can protect the body from infection?

• skin

• stomach

• trachea

• liver

This section in most probably taken from

• the nostril.

• the pharynx.

• the bronchus.

• the air sac.

Tags

NGSS.MS-LS1-3

When there is a cut on the skin, the area around the wound would become red and swollen. The wounded area

• gets red because the capillaries dilate.

• swells because a lot of bacteria are killed.

• swells because the tissue fluid accumulates.

• gets red as the body temperature increases.

Which of the following structures of the human skin prevent the invasion of pathogens?

• epidermis

• blood capillaries

• sebaceous glands

• hair

Reorder the following about phagocytosis

• The pathogen is enclosed in a vesicle.

• The pathogen is digested.

• Lysozyme is released into the vesicle.

• The harmless products are released.

• The phagocyte forms pseudopodia.

Tags

NGSS.MS-LS1-3