Peyer's patches and the tonsils are part of the collection of small lymphoid tissues that protect the upper respiratory and digestive tracts from infection and are referred to as ________.
A) lymph nodes
B) MALT or mucosa-associated lymphatic tissue
C) germinal centers
D) lymphatics

Question

Quizplus · Accepted Answer

Peyer's patches and tonsils are part of the mucosa-associated lymphatic tissue (MALT), which is a collection of lymphoid tissues that protect mucosal surfaces from infection. While lymph nodes do play a role in immune defense, they are not specifically located in the upper respiratory or digestive tracts. Germinal centers are structures found within lymphoid tissues involved in the maturation of B cells, but they are not specific to the upper respiratory or digestive tracts. Lymphatics are vessels that transport lymph fluid, but they are not directly involved in immune defense.

Peyer's Patches and the Tonsils Are Part of the Collection