extra 20

Question 1

lymphatic system

Answer 1

returns fluid that leaked from blood vessel back to blood, activates immune response, 4 parts: network of lymphatic vessels, lymph (fluid in vessels), lymph nodes (cleanse lymph), lymphatic organs and tissues (spleen, thymus, tonsils)

Question 2

lymphoid organs

Answer 2

has phagocytic cells and lymphocytes, structural basis

Question 3

lymphatic vessels

Answer 3

one way, lymph flows to heart, return IF fluid and leaked plasma proteins back to blood, include: l.capillaries (very permeable, almost everywhere), collecting l (formed from convergence of capillaries, have thinner walls then veins), l.trunks (receive lymph)

Question 4

lymphatic capillaries

Answer 4

very permeable, almost everywhere

Question 5

lacteals

Answer 5

chyle

Question 6

lymph nodes filter

Answer 6

lymph

Question 7

spleen

Answer 7

largest lymph organ, serve splenic artery, lymph proliferation, immune surveillance, blood cleansing, removal of RBC

Question 8

thymus

Answer 8

important in early age

Question 9

tonsils

Answer 9

simplest lymphoid organ, forms rings of lymphatic tissue around pharynx