health
define adenoids
traps viruses as you breathe through your nose
define tonsils
protects you from bacteria when eating/drinking
define lymph nodes
filter substances that travel through lymphatic fluid (especially waste) and swell during infection
define lymphatic vessels
connects the lymph nodes and carries waste to the circulatory system
what does the thymus do?
develops T-Cells
what does the spleen do?
removes cellular waste and activates white blood cells during infection
what does the bone marrow do?
the produce RBC, WBC, and platlets
what does the appendix do?
helps produce WBC
what are WBC also known as
leukocytes
what are the 2 types of leukocytes?
lymphocytes and phagocytes
what are the 2 types of lymphocytes?
T-Cells and B-Cells
what do B-Cells do?
they make infection-fighting proteins called antibodies
what do T-Cells do?
send signals to other cells to help fight infection
what do lymphocytes do?
find and target invaders, produce antibodies and helps phagocytes destroy invaders
what do phagocytes do?
fights bacteria, calls in reinforcements, marker in blood tests for infection