Chapter 21 Flashcards
principal function of lymphatic system
return excess fluid
lymphatic system components
lymph vessels
lymphoid tissue
organs
lymph
fluid transported by the lymphatic system
components of lymph
mostly water
dissolved solutes
small amount of protein
sometimes:
debris
pathogens
cancer cells
smallest lymphatic vessels
lymphatic capillaries
lymphatic capillaries vs blood capillaries
lymphatic:
larger
no basement membrane
have overlapping endothelial cells
anchoring filaments
hold everything
lacteals
lymphatic capillaries in the GI tract
absorb lipid-soluble substances
lymphatic system merging
lymphatic capillaries
lymphatic vessels
lymphatic trunks
lymphatic ducts
primary lymphoid structures
thymus
red bone marrow
secondary lymphoid structures
spleen
tonsils
lymph nodes
lymph nodules
MALT
_____ pressure pushes the interstitial fluid into the lymphatic capillaries
hydrostatic
lymphatic vessels have _____ like veins
valves
lymphatic system moves lymph using
skeletal pump
respiratory pump
pulsatile movement of blood
rhythmic contraction of smooth muscle
jugular trunks drain from
head and neck
subclavian trunks drain from
upper limbs
breasts
superficial thoracic wall
bronchomediastinal trunks drain from
deep thoracic wall
intestinal trunk drains from
most abdominal structures
lumbar trunks drain from
lower limbs
abdominopelvic wall
pelvic organs
largest lymphatic vessel
thoracic duct
2 lymphatic ducts
right lymphatic duct
thoracic lymphatic duct
right lymphatic duct location
near right clavicle
right lymphatic duct drains
upper right quadrant
right lymphatic duct delivers lymph to
junction of right subclavian and right internal jugular veins
saclike base of thoracic duct
cisterna chyli
thoracic duct drains lymph from
the rest of the body
thoracic duct from diaphragm to ____
left subclavian and left internal jugular veins
lymphedema
accumulation of interstitial fluid due malfunction of lymphatic system
red bone marrow is the site for
hematopoiesis
T lymphocytes maturate in
thymus
location of red bone marrow
sponge bone
location of the thymus
mediastinum
thymus structure
2 thymic lobes surrounded by connective tissue capsule
trabeculae subdivides lobes into lobules
cortex of a lobule contains
immature T-lymphocytes
medulla of a lobule contains
mature T-lymphocytes
lymphoid tissue
tissue inside another organ
lymph nodes function
filter lymph
remove unwanted substances
lymph node components
afferent lymphatic vessels
efferent lymphatic vessel
trabecular
cortex
medulla
efferent lymphatic vessel location
hilum
lymph node cortex contains
lymphoid nodules
parts of the lymph cortex
cortical sinus
mantle zone
germinal center
what does germinal centers house?
proliferating B-lymphocytes
macrophages
what does mantle zone contain?
T-lymphocytes
macrophages
dendritic cells
lymph node medulla contains
medullary cords
largest lymphoid organ
spleen
tissues of the spleen
white pulp
red pulp
white pulp contains
T-lymphocytes
B-lymphocytes
macrophages
all around a central artery
red pulp contains
erythrocytes
platelets
macrophages
B-lymphocytes
spleen function
monitors blood
clear defective erythrocytes and macrophages
store them too
eat foreign particles
path of flow in the spleen
splenic artery
central artery
sinusoids
venules
splenic vien
tonsils are named for
the are they’re in
mention the tonsils
pharyngeal tonsils
palatine tonsils
lingual tonsils
pharyngeal tonsil location
nasopharynx
palatine tonsil location
posterolateral oral cavity
lingual tonsil location
posterior 1/3 of tongue
tonsils contain invaginations called ______ which _____ material
tonsillar crypts, trap
lymphoid nodules group together to form
MALT
where is mucosa-associated lymphoid tissue (MALT) located?
GI, respiratory, urinary, genital tracts
where is MALT prominent?
ileum
