Chapter 20

Question 1

What are the organs of the lymphatic system

Answer 1

bone marrow, spleen, thymus, lymph nodes, lymphatic vessels

Question 2

What is lymph

Answer 2

clear to white fluid made of WBCs, not blood or plasma

Question 3

How do filaments function in lymphatic vessels

Answer 3

cell adhere to substrate

Question 4

Where are lacteals located

Answer 4

vessels that serve the small intestine

Question 5

What do lacteals do

Answer 5

route for drainage of dietary lipids and lipid soluble nutrients

Question 6

What are the names of the lymphatic trunks

Answer 6

jugular, subclavian, bronchomediatinal, and lumber

Question 7

What are the mechanism of lymph transport

Answer 7

skeletal muscle, respiratory movement and contraction of smooth muscle

Question 8

what is Lymphedema

Answer 8

swelling due to build up of lymph fluid in the body

Question 9

What do reticular cells do

Answer 9

synthesize collagen to make reticular fibers

Question 10

What is the function of reticular connective tissue

Answer 10

form stroma and provide structural support

Question 11

Where is diffuse lymphoid tissues

Answer 11

skin and mucous membranes

Question 12

What are germinal centers made of

Answer 12

mainly B cells

Question 13

What is the function of secondary organs

Answer 13

maturation of B cells and T cells

Question 14

What are the two primary functions of lymph nodes

Answer 14

filter lymph, defend against infection

Question 15

What kinds of cells are in the medulla of the lymph node

Answer 15

antibody secreting plasma cells, B cells and macrophages

Question 16

What are lymph sinuses

Answer 16

space between the capsule and cortex for lymph movement

Question 17

What is a hilus

Answer 17

an indentation in the surface of an organ where blood vessels ducts or nerve fibers

Question 18

What are the effects of having less efferent lymphatic vessels than afferent lymphatic vessels

Answer 18

allows lymph to accumulate in lymph nodes

Question 19

Why does lymph accumulate in lymph nodes

Answer 19

allows more time for cleansing

Question 20

what is Lymphadenitis

Answer 20

enlargement in one or more lymph nodes

Question 21

What is lymphadenopathy

Answer 21

swelling of the lymph nodes

Question 22

What is metastasis

Answer 22

cancerous cells break free from original tumor, travel to other sites in the body, and establish tumors

Question 23

What is the largest lymphoid organ

Answer 23

the spleen

Question 24

What is the function of the spleen

Answer 24

filter blood and lymph

Question 25

What is the function red pulp

Answer 25

blood filtration

Question 26

What is the function of white pulp

Answer 26

filter lymph

Question 27

What happens when someone has a splenectomy

Answer 27

liver and bone marrow macrophages take over functions

Question 28

Why are MALT tissues in mucous membranes

Answer 28

protect the linings of body

Question 29

what are the Largest collections of MALT

Answer 29

tonsils, peyer’s patches, appendix

Question 30

What is the function of tonsils

Answer 30

filter out germs that enter through mouth and nose

Question 31

What do peyers patches destroy

Answer 31

pathogens and tumors

Question 32

What is the function of appendix

Answer 32

serves as a reservoir for good bacteria

Question 33

What is the function of thymus

Answer 33

surveillance and protection

Question 34

What does the medulla of the thymus contain

Answer 34

t-lymphocytes increased numbers of epithelial cells with pale nuclei