Question

Which of the following is true about a draining lymph node?

a. It is the site where mature lymphocytes can encounter pathogens. b. They typically increase in size during an infection.
c. They can be referred to as "swollen gland."
d. It is the site where lymph-borne antigens are encountered by lymphocytes.
e. All of the above are true.

Answer 1

A draining lymph node is the site where lymph-borne antigens are encountered by lymphocytes as a part of the immune response.

Step-by-step explanation:

The correct option that is true about a draining lymph node is d. It is the site where lymph-borne antigens are encountered by lymphocytes. Lymph nodes are small structures located along the lymph vessels that function as filters.

They remove debris and pathogens from the lymph and house populations of T and B cells, dendritic cells, and macrophages. Lymph enters the lymph node and antigens are filtered through it, allowing lymphocytes to encounter and respond to these antigens.