5.3.1

thymus, bone marrow

thymus, bone marrow

where immature lymphocytes develop

leukocytes

white blood cells scientific term

lymphocytes

these white blood cells mature into B and T cells

spleen

acts as a blood filter. Antibody synthesis occurs here - removes antibody coated bacteria and blood cells. Reservoir of monocytes (macrophages and dendritic cells)

lymph node

contains B and T lymphocytes, filters and traps foreign invaders and cancer, enlarges when fighting infection

lymph

these vessels travel with blood vessels

lymph

this fluid circulates in lymphatic vessels and once filtered, returns to vena cava

lymph

this fluid is similar to plasma, but with less proteins and travels through thin vessels operated with valves

tonsils

located in the mouth for first detection and elimination of foreign invaders, fights infection, makes antibodies, contains leukocytes

appendix

this organ contains some lymphoid tissue

mucosa associated lymphatic tissue

what does MALT stand for?

gut associated lymphatic tissue

what does GALT stand for?

MALT

lymphoid tissue from nasopharynx, salivary glands, eye, skin, thyroid, breast, lungs, and gut. To protect and stop foreign invaders from entering body

GALT

the gut has to absorb food but keep out foreign invaders - 70% of immune cells are in the gut, makes more lymph and antibodies than any other organ

peyer’s patches

prevent bacterial infection in the small intestines, located in the mucous membrane

humoral

type of specific immunity, secrete antibodies that defend against extracellular pathogens, B cells

cell mediated

type of specific immunity that defends against infected cells, cancers, and transplant tissues, T cells

T

_ cells are in charge of cell mediated immunity because they kill cells that have been infected

B

_cells are in charge of humoral immunity because they kill specific pathogens using antibodies

neutrophils

these are attracted to sites of inflammation, injury, or infection

monocyte

a type of leukocyte, largest type, differentiate into macrophages and dendritic cells