lymphatic system

Question 1

how much interstitial fluid is drained into the lymphatic system a day

Answer 1

32L

Question 2

what are the 3 functions of the lymphatic system

Answer 2

drainage, transport, protect

Question 3

how does the lymphatic system drain

Answer 3

drains tissue spaces of excess interstitial fluid and return it to the CV system

Question 4

how does the lymphatic system transport

Answer 4

transports dietary lipids and lipid-soluble vitamins (A,D,E and K) from the GI tract to the blood

Question 5

how does the lymphatic system protect

Answer 5

protects from foreign cells, microbes and cancer cells through immune responses

Question 6

describe lymphatic capillaries

Answer 6

slightly larger than blood capillaries
close ended
pressure in tissue forces fluid into them

Question 7

describe overlapping endothelial cells

Answer 7

acts like a one way valve so fluid can not flow out
found throughout body ecxept CNS, bone narrow, portions of spleen and avascular tissue

Question 8

what causes lymph to flow

Answer 8

muscle contractions
1 way valves
respiratory pressure
smooth muscle contraction in lymph vessel wall

Question 9

name the lymphatic organs

Answer 9

thymus, red bone marrow, lymph nodes, spleen, lymphatic nodules

Question 10

which lymphatic organs are primary organs

Answer 10

thymus and red bone marrow

Question 11

which lymphatic organs are secondary organs

Answer 11

lymph nodes
spleen
lymphatic nodules

Question 12

what is the structure of the thymus

Answer 12

two lobed organ

Question 13

where is the thymus

Answer 13

between lungs, above heart

Question 14

what is the function of the thymus

Answer 14

immature T cells migrate from bone marrow to cortex of thymus where they multiply and mature

Question 15

what shape are lymph nodes

Answer 15

bean shaped

Question 16

how many lymph nodes are throughout the body

Answer 16

roughly 600

Question 17

where are lymph nodes most concentrated

Answer 17

mammary glands, axillae and groin

Question 18

what do lymph nodes contain

Answer 18

plasma cells, mature B-cells, T-cells, dendritic cells and macrophages

Question 19

what do lymph nodes do

Answer 19

filter lymph and trap foreign substances

Question 20

explain the spleens structure

Answer 20

oval, largest single mass of lymphoid tissue

Question 21

where is the spleen

Answer 21

on LHS between stomach and diaphragm

Question 22

what types of pulp is the spleen made of

Answer 22

white and red

Question 23

describe white pulp

Answer 23

lymphocytes and macrophages surrounding central arteries

Question 24

describe red pulp

Answer 24

blood filled venous sinuses and splenic cords with RBC, macrophages, lymphocytes, plasma cells and granular leukocytes

Question 25

what does red pulp do

Answer 25

destroys worn or defective blood cells and platelets
stores platelets
production of blood cells in foetal life

Question 26

what shape are lymphatic nodules

Answer 26

egg shaped

Question 27

what are lymphatic nodules

Answer 27

lymphatic tissue in mucous membranes lining, found in GI tract, urinary tissue