Class 12: Lymphatic System Flashcards Preview

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Flashcards in Class 12: Lymphatic System Deck (99)
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1

function of lymphatic and immune systems

-maintain fluid balance
-protect body from infection and disease

2

fluid recovery means

fluid continually filters from the blood capillaries into the tissue spaces

3

lacteals are located

in the small intestine

4

lacteals absorb

dietary lipids that are not absorbed by the blood capillaries

5

lymph is similar to.. but has much less...

plasma, protein

6

what is drawn into the lymphatic capillaries?

extracellular fluid

7

lymphatic capillaries are....

sacs of thin endothelial cells

8

lymphatic capillaries are closed...

at one end

9

what opens the valve-like flaps in lymphatic capillaries?

interstitial fluid pressure

10

lymphatic vessels have an outer layer called

tunica externa

11

tunica media is

middle layer of lymphatic vessels

12

tunica interna is comprised of...

endothelium and valves

13

right lymphatic duct gets lymph from

right arm, right head and thorax

14

right lymphatic duct drains into

right subclavian vein

15

thoracic duct begins where... called what?

in abdomen, cisterna chyli

16

thoracic duct empties into...

left subclavian vein

17

lymph flows how compared to venous blood

lower pressure and slower speed

18

skeletal muscle pump aids flow of...

lymph

19

arterial pulsation is..

rhythmic squeezing of lymphatic vessels

20

thoracic pump aids flow from...

abdominal to thoracic cavity

21

types of lymphatic cells

-natural killer
-t lymphocytes
-b lymphocytes

22

natural killer cells are responsible for...

non-specific surveillance

23

b lymphocytes when activated cause...

proliferation and differentiation into plasma cells that produce antibodies

24

all lyphocytes originate in the

red bone marrow

25

t-cell precursors travel to...

thymus to specialize into t-cells

26

b-cells originate in...

red bone marrow

27

b-cells migrate to the...

spleen and lymph nodes

28

primary lymphatic organs are...

red bone marrow and thymus

29

secondary lymphatic organs are

lymph nodes, tonsils, and spleen

30

thymus belongs to which systems?

endocrine, lymphatic, and immune