Thymus Blah + Lymph Ish Flashcards
LYMPHATICS SYSTEM
- 2 functions
- _________ for the cvs and ____
fluid balance
immunity
Function of lymphatic system
Fluid balance- ____ing excess fluid to ____
Immunity:_______ and _____ lymphocytes and other immune cells
returning
the blood
Transports and houses
LYMPH fluid
-a fluid similar to ____ without _____ or ______
blood
plasma proteins or RBCs
Lymph fluid passes through the lymphatic vessels
T/F
T
LYMPHatic Vessels
-provide ____ for the lymph to reach the_______
passage
venous blood
LYMPHatic Organs
-include ______,_____ , ______ ,e.t.c
LYMPHatic capillaries
-absorb fluid from the ______
spleen
thymus
bone marrow
ISF
LYMPH Nodules
-________ of lymphocytes (_____,_____,_____ )
LACTEALS
-absorb _______ substances from the ____
MALT, GALT,BALT
collection
lipid soluble; GIT
Lymphatic nodules form a _________ capsule around ______ structures to seperate them from surrounding tissues
fibrous CT
secondary
LYMPHatic trunk and ducts
- relatively (smaller or larger?) than vessels
- drain lymphs into the ____ circulationTHYMUS
-where __ lymphocytes are ____, get ____ and ______
Larger
venous
T
educated
matured
differentiated
RED BONE MARROW
-produces ______ including _____
formed elements
lymphocytes
LYMPH NODES
- monitors lymph for ________
- _____ said materials if found
- largest collection is where _____ meeet ____
foreign materials
kills
limbs meet trunk
SPLEEN WHITE PULP
____________ for ________
SPLEEN RED PULP
-kills _______________ and __________
Monitors blood for foreign materials
old and defective erythrocytes and platelets
Spleen red pulp
serves as reserve for _____
platelets
TONSILS
-defense against pathogens in _______ and _____
air and ingested food
-elephantiasis: filaria works by __________
blocking lymph vessels
metastasis :
cancerous cells moving from one site through the ________ to another
lymph vessels
LYMPHOCYTES
-produce in ______
bone marrow
B lymphocytes are educated in the______, T lymphocytes are educated in the _____
- educated lymphocytes can be in ________ as ________ or in lymphatic _________, or in lymphatic tissues like _____, or lymphatic organs
- just waiting there
- distribution depends on _____,_____, or _____
bone marrow
thymus
connective tissues as free cells
nodules
tonsils
health status, injury or infection site.
EDUCATION
-B is educated by ____________, if the B cells _____ it, it gets ____, if the B cells doesn’t, it ______
-T’s can occur in two ways, positive or negative
Positive: if it can _______________, pass
Negative: if it ______________, fail
presenting it with self antigens
attacks ; killed; passes
bind to an MHC molecule
attack a self antigen
Who has larger thymus
Adults or children
larger in children than in adults
THYMUS
-atrophied after ____ thereby ______ing the immune system
puberty
diminishing
only __% of T cells survive education in the thymus
2
Lymph capillaries
-(single or double ?) layer of overlapping _____ cells
Single
endothelial
Lymph capillary is a blind end
T/F
T
Which is more permeable
Blood capillaries or lymph capillaries
Lymph capillaries is more permeable than blood capillary
Lymph capillaries is absent from ______,_____,_____,____
brain, spinal cord, bone marrow and splenic pulp
Lacteals
- lymph capillaries in the _____(_______)
- they conduct ____ soluble vitamins and _____
- lymph of here has a ___ color and is called ____
GIT
small intestine
lipid
dietarylipids
milky
chyle
Lymphatic vessels
- _____ layers of endothelial cells
- presence of _____ at intervals
- has _____ and _____ sets
three
nodes
superficial and deep
Which is thicker
Lymphatic vessels or veins
Lymphatic vessels
Which is more numerous
Lymphatic vessels or veins
Lymphatic vessels
Lymphatic trunks
- rt and lt _____
- rt and lt _____
- rt and lt _____
- rt and lt _____
- ______ trunk
jugular
subclavian
bronchomediastinal
lumbar
intestinal
RIGHT LYMPHATIC DUCT
- formed by union of __________,________,_______
- drains into the right _______
- drains lymph from right half of head, neck, thorax and right upper limb, right lung, right side of heart, right surface of liver
rt jugular, rt subclavian and rt bronchomediastinal
venous angle
THORACIC DUCT
- begins in front of ___ vertebrae as a ____ sac called _________
- it’s formed by the union of the ________ and ______
- it then ascends upward and sways to the (right or left?) at ___ vertebrae and ends up in the left ______ but not before it’s joined by the left ______,______, and ______ trunks
- drains lymph from every other place
L1
dilated
Cysterna chyli
intestinal trunk, and rt and lt lumbar trunks.
Left
T5
venous angle
jugular, subclavian, and bronchomediastinal
