lymphatic system

Question 1

lymphatic system

Answer 1

a network of tissues, vessels and organs that work together to move a colourless, watery fluid called lymph back into your bloodstream

Question 2

roles of the lymphatic system

Answer 2

• transportation of APCs to secondary lymphoid tissues for antigen recognition and the third line of defence
  -production of leukocytes, including lymphocytes in primary lymphoid tissues
  -removal of fluid from tissues around the body

Question 3

three major components of the lymphatic system

Answer 3

-primary lymphoid tissues
-secondary lymphoid tissues
-lymphatic vessels

Question 4

Primary Lymphoid Tissues

Answer 4

-responsible for the creation and maturation of lymphocytes
-consists of the bone marrow and thymus gland

Question 5

where do the b lymphocytes mature, and where are they made?

Answer 5

made and mature in bone marrow

Question 6

where do the t lymphocytes mature, and where are they made?

Answer 6

made - bone marrow
mature - thymus gland

Question 7

secondary lymphoid tissue

Answer 7

responsible for maintaining mature lymphocytes and initiating the adaptive immune response

main ones :
-lymph nodes
-spleen

Question 8

what do mature lymphocytes do in the secondary tissues?

Answer 8

scan passing lymph for complimentary apcs or pathogens

Question 9

lymph movement

Answer 9

1. fluid from blood vessels (extracellular fluid) leaks into body tissues
2. lymph enters lymphatic capillaries which turn into the lymphatic vessels, which lead into a lymph node

Question 10

lymph movement in lymph nodes

Answer 10

1. lymph arrives via afferent lymphatic vessels
2. leaves via efferent

Question 11

cortex in lymph node

Answer 11

b cells cluster together here

Question 12

paracortex in lymph node

Answer 12

t cells cluster together here, as well as apcs