Lymphatic/Immune System Flashcards
0
Q
What does the lymphatic system consist of?
A
- lymph
- lymphatic vessels
- lymphatic tissue/organs
- lymphocytes, phagocytes and other immune system cells
1
Q
What is the lymphatic system function?
A
- protect against disease
- drainage of interstitial fluid
- transporting dietary lipids and lipid soluble vitamins (A D E K)
- facilitation of immune response
2
Q
What is lymphatic capillaries?
A
- capillaries that begin as blind ended tubes
- structure helps to let fluid in but not out
3
Q
What is the fluid inside lymphatic capillaries called?
A
Lymph
4
Q
What is lymph capillaries in intestinal villi called?
A
Lacteals
5
Q
Lymphatic system (circulation).
A
- blood plasma (from capillaries)
- interstitial/tissue fluid
- lymphatic capillary
- lymph vessels, trunks and ducts
- blood plasma (vein at base of neck)
6
Q
What are lymph vessels?
A
- thin walls
- resemble veins but have more valves
- have lymph nodes at intervals
- respiratory and muscular pumps promote flow of lymph towards large veins/heart
7
Q
What are primary lymphatic organs?
A
- red bone marrow
- thymus
8
Q
What are second lymphatic organs?
A
- spleen
- lymph nodes
9
Q
What are diffuse lymphatic tissue?
A
- tonsils, adenoids and peyer’s patches
10
Q
What is thymus gland?
A
- found in mediastinum above heart
- large in infancy and atrophied but functional in adulthood
- makes thymosin hormones
- T cells mature here
11
Q
What are lymph nodes?
A
- surrounded by connective tissue capsule
- each compartment made up of reticulocytes
- filter lymph
12
Q
What is between the reticular cells?
A
Lymphocytes
13
Q
What do lymphocytes produce?
A
Antibodies
14
Q
Where is the spleen?
A
- between stomach and diaphragm
