The Lymphatic System

HideShow resource information
what are the main parts of the lymphatic system?
lymph fluid, lymph capillaries & vessels & ducts, lymph nodes
1 of 23
what are the functions of the lymphatic system?
tissue fluid drainage, protection against disease, transport of fats
2 of 23
what does tissue fluid drainage do?
drains excess plasma from the tissues/distributes fluid in the body.
3 of 23
what is the lymph fluid?
formed from excess tissue fluid, which is drained into the lymph capilleries.
4 of 23
what is the composition of lymph?
similar to blood plasma but contains more white blood cells, fat absorbed from the small intestine.
5 of 23
what happens in the lymph vessels?
lymph is squeezed along the lymph vessels by muscle contraction, back flow is prevented by valves.
6 of 23
then where does the lymph go?
it eventually gets emptied into large lymphatic ducts which drain into the blood in the subclavian veins.
7 of 23
what are the lymph nodes?
they occur along the lymph vessels and contain many infection fighting white blood cells called monocytes and lymphocytes
8 of 23
how does the lymph enter the lymph node?
via an afferent vessel and exits via an efferent vessel
9 of 23
what does the lymph node do before the blood is drained back into the blood stream?
they filter and clean the blood
10 of 23
what do lymph nodes do in response to infection?
they swell up e.g. cervical nodes in the neck
11 of 23
label the diagram of the lymph nodes on the dog
label all correctly with labels spelt correctly
12 of 23
label diagram of a lymph node
CORRECTLY
13 of 23
what are the 2 main types of lymphocytes that are found in the lymphatic system?
T lymphocytes and B lymphocytes
14 of 23
what do T-lymphocytes do?
attack pathogens directly
15 of 23
what do B lymphoctyes do?
produce antibodies which immobalise pathogens
16 of 23
what are the rwst of the lymphatic organs and tissues in the animal body?
Spleen, bone marrow, Thymus, Tonsils, Adenoids, Peyer's patches
17 of 23
what does the spleen do?
it acts as a filter for blood as part of the immune sytsem, recycles old red blood cells, platlets and white blood cells are stored there.
18 of 23
what does the bone marrow do?
prduces cells and stores fat
19 of 23
what does the thymus do?
where T-lymphocytes or T cells develop and mature.
20 of 23
what are the tonsils responsible for?
they sample the bacteria that comes through the nose or mouth.
21 of 23
what is the adenoids?
they react to foriegn invaders in the body in the nasal cavity.
22 of 23
what does the peyer's patches do?
tey monitor intestinal bacteria and make sure pathogenic bacteria dont grow in the intestines
23 of 23

Other cards in this set

Card 2

Front

what are the functions of the lymphatic system?

Back

tissue fluid drainage, protection against disease, transport of fats

Card 3

Front

what does tissue fluid drainage do?

Back

Preview of the front of card 3

Card 4

Front

what is the lymph fluid?

Back

Preview of the front of card 4

Card 5

Front

what is the composition of lymph?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Other resources:

See all Other resources »See all Anatomy and Histology: The lymphatic system resources »