Lymphoid Organs and Action

lymph nodes collect along entire ___ of ___ so the lymph goes through hundreds on its journey and gets as as possible before entering

length, lymphatic collecting vessels, cleansed, bloodstream

major collecting areas of lymph nodes (3)

• neck

• armpit

• inguinal areas

lymph node action 1: lymph enters via several _

afferent lymphatic vessels

lymph node action 2: the lymph filters through __ and is processed through __

sinuses, stroma

lymph node action 3: after processing, the lymph exits through vessel at __

efferent lymphatic, hilus

lymph node action involves more vessels than vessels so it accumulates and processes more _

afferent, efferent, lymph, efficiently

the spleen doesn't process _, it processes but it still has and macrophages

lymph, blood, lymphocytes

the spleen stores from the liver and works to ____ old ____ from circulation

breakdown products, remove, erythrocytes

in an embryo, the spleen produces until _ takes over

erythrocytes, red bone marrow

spleen action 1: blood is delivered to the spleen via the _ which is a branch off of the _

splenic artery, aorta

spleen action 2: blood is filtered by _ in _ pulp

lymphocytes, white

spleen action 3: after white pulp filtration, blood is then filtered by in _ pulp

macrophages, red

spleen action 4: the cleansed blood is the returned via the _

splenic vein

the thymus is mostly functional in / and __ with age

newborns/children, diminishes

thymus action involves the production of (2) which signals to produce ____ to make the marker that causes _ lymphocytes to become _

• thymosin

• thymopoietin

DNA, protein, T, immunocompetent

tonsils get ____ when they stop __ and are found around the __

inflamed, pathogens, pharynx entrance

there are _ different types of tonsils

4

largest tonsils

palatine

palatine tonsils are tonsils in the back of the _ (by the soft palate) and they are in a tonsillectomy along with the ____

paired, mouth, removed, pharyngeal

pair of tonsils at the base of the tongue

lingual

the pharyngeal tonsil is a ___ tonsil on the ___ of the and is aka the ____

single, posterior wall, nasopharynx, adenoids

tubal tonsils are a _ around the __ that protects the _ from foreign things

pair, pharyngotympanic tube, ear

tonsils histologically have with as well as _ that are pathways

follicles, germinal centers, crypts, dead-ended

tonsil action 1: crypts trap _ and ___

bacteria, particulates

tonsil action 2: trapped bacteria goes through the into _ tissue

epithelium, lymphoid

tonsil action 3: lymphoid tissue ___ pathogens

destroys

tonsil action 4: memory cells are formed to allow __

faster response

peyer's patches are found in the _ and have a lot of __

intestine, stroma

peyer's patches are isolated of found in the end of the _ and start if the ____

clusters, lymphoid follicles, small intestine, large intestine

peyer's patches destroy ___ and generate _ lymphocytes

bacteria, memory