lymphatic system

Question 1

the lymphatic system consists of

Answer 1

lymph
lymphatics
lymphoid tissues and organs
lympocytes

Question 2

1. lymph

Answer 2

similar to plasma but less protein

all cells are bathed in tissue fluid, ECF, which when drained in to lymphatics, it is known as lymph

Question 3

2. lymphatics

Answer 3

lymphatic vessels

begin in peripheral tissues and join to veins

Question 4

3. lymphoid tissues and organs

Answer 4

throughout the body
primary and secondary lymphoid tissues and organs

Question 5

primary lymphoid tissues and organs

Answer 5

ex. red bone marrow and thymus gland,
where lymphocytes are formed and matured

Question 6

secondary lymphoid tissues and organs

Answer 6

where lymphocytes are activated and cloned

Question 7

ex of secondary lymphoid tissues and organs

Answer 7

appendix
spleen
lymph nodes
tonsils
MALT (mucosa-associated lymphoid tissue)

Question 8

4. lymphocytes

Answer 8

which provide immunity against bacteria and viruses

Question 9

lymphatic vessels are

Answer 9

lymph capillaries
lymph vessels
larger collecting ducts

Question 10

1. lymph capillaries are responsible for the

Answer 10

absorption of interstitial fluid from the tissues

Question 11

2. lymph vessels propel the

Answer 11

fluid upwards to larger collecting ducts

Question 12

3. larger collecting ducts are the

Answer 12

right lymphatic duct
thoracic duct

Question 13

the right lymphatic duct empties in to the

Answer 13

right subclavian vein

Question 14

the thoracic duct empties in to the

Answer 14

left subclavian vein

Question 15

how do lymphatic capillaries differ from blood capillaries?

Answer 15

1. originate as pockets rather than continuous vessels
2. have larger diameters
3. have thinner walls
4. have flattened or irregular outline

Question 16

lymphangitis

Answer 16

inflammation of lymphatic vessels

Question 17

lymphadenitis

Answer 17

inflammation of lymph node

Question 18

lymph vessels may be involved in

Answer 18

metastasis (spread) of cancer

Question 19

lymphedema

Answer 19

(accumulation of interstitial fluid)

occur when lymph is not drained from an area of body

Question 20

lymphadenopathy

Answer 20

excessive enlargement of lymph node due to bacterial or viral infections, cancer, etc.

Question 21

lymphatic capillaries are present in almost every

Answer 21

tissue and organ in the body

Question 22

lymphatic capillaries are absent in

Answer 22

cornea of the eye
red bone marrow
central nervous tissue
internal ear
epidermis of skin
cartilage
bone

Question 23

lymphatic capillaries are lined by

Answer 23

endothelial cells

Question 24

lymphatic capillaries’ basement membrane is

Answer 24

incomplete

Question 25

lymphatic capillaries’ endothelial cells

Answer 25

overlap
forming a valve permitting the fluid to enter with viruses, bacteria, and cell debris but prevent the backflow of these substances

Question 26

small lymphatic vessels correspond to veins, have

Answer 26

valves which bulge out giving a beaded appearance to the vessels

Question 27

valves prevent the backflow of

Answer 27

lymph