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Phase 1 week 2 - immune > Lymphatics > Flashcards

Flashcards in Lymphatics Deck (16):
1

What type of lymphocytes are found in the cortex

b cell

2

What type of lymphocytes are found in the medulla

b cell

3

What type of lymphocytes are found in the paracortex

t cell

4

What does lymph look like?

Clear, white water like fluid

5

What is lymph made of?

WBC and chyle

6

Define lymph

The fluid that circulates the lymphatic system

7

How is lymph formed?

Blood exchanges nutrients and waste products from the bloodstream to tissues through interstitial fluid. As substances are added and taken away from the interstitial fluid, its composition changes. Interstitial fluid is formed at the arterial end of capillaries. Most of it is returned to the venous capillaries and venules, but 10% enters lymph capillaries as lymph

8

What is the function of lymph?

To return proteins and excess interstitial fluid to the blood. Also to pick up bacteria and carry to the lymph nodes to be detroyed

9

Where in the body are lymph nodes most densely distributed?

Centre of the body - neck, armpits and intestines

10

What type of vessels take lymph into lymph nodes?

Afferent vessels

11

What type of vessels take lymph out of lymph nodes?

Efferent vessel

12

Define lymphoedema

Impaired flow of lymphatic system

13

Name some symptoms of lymphoedema

Swelling, less flexibility

14

Name some causes of lymphoedema

Removal of a lymph node, injury to lymph node

15

Describe the flow of lymph through the lymphatic system

l. capilarry
l. vessel (collecting vessel)
l. node
l. trunk
l. ducts (right duct and thoracic duct)
left and right subclavian veins

16

Describe the flow of lymph through the lymphatic system

l. capilarry
l. vessel (collecting vessel)
l. node
l. trunk
l. ducts (right duct and thoracic duct)
left and right subclavian veins
vena cava