A patient is being treated in the emergency department following an injury which resulted in a 6-cm laceration of the right antecubital that was sustained when the patient fell through the glass of a storm door. The site of the injury will have an invasio

Question

A) Interferon
B) Phagocytic cells
C) Apoptosis
D) Cytokines

Answer 1

Ans: B
Feedback: Monocytes also function as phagocytic cells, engulfing, ingesting, and destroying greater numbers and quantities of foreign bodies or toxins than granulocytes. This occurs in response to the foreign bodies that have invaded the laceration from the dirt on the broken glass. Interferon, one type of biologic response modifier, is a nonspecific virucidal protein that is naturally produced by the body and is capable of activating other components of the immune system. Apoptosis, or programmed cell death, is the body's way of destroying worn-out cells, such as blood or skin cells, or cells that need to be renewed. Helper T cells are activated upon recognition of antigens and stimulate the rest of the immune system. When activated, helper T cells secrete cytokines that attract and activate B cells, cytotoxic T cells, natural killer cells, macrophages, and other cells of the immune system.