3.2 blood, tissue fluid & lymph Flashcards Preview

A Level Biology > 3.2 blood, tissue fluid & lymph > Flashcards

Flashcards in 3.2 blood, tissue fluid & lymph Deck (30):
1

(blood) blood consists of what yellow liquid?

plasma

2

(blood) what does plasma contain?

water (90%)
dissolved glucose
amino acids
minerals
RBCs
WBCs
platelets
hormones
large plasma proteins

3

(plasma proteins) what 3 large proteins does blood contain?

albumin
fibrinogen
globulins

4

(plasma proteins) what does albumin do?

maintains osmotic balance

5

(plasma proteins) what does fibrinogen do?

involved in clotting

6

(plasma proteins) what are globulins involved in?

transport and the immune system

7

(blood) blood transports oxygen and carbon dioxide to where?

respiring cells

8

(blood) transports digested food from where?

the small intestine to cells

9

(blood) transports nitrogenous waste from where?

cells to excretory organs

10

(blood) transports platelets to where?

damaged areas

11

(blood) transports cells and antibodies involved in what?

immune response

12

(blood) transports what chemical messengers?

hormones

13

(tissue fluid) surrounds cells and is made from what?

substances leaving blood plasma

14

(tissue fluid) how do substances move out of capillaries into tissue fluid?

pressure filtration

15

(tissue fluid) as blood flows through arterioles to capillaries what type of pressure is it under?

hydrostatic from the hearts contractions

16

(tissue fluid) at the arterial end of the capillary hydrostatic pressure is what?

high - 4.6

17

(tissue fluid) the high hydrostatic pressure at the arterial end does what?

forces blood out of the capillary

18

(tissue fluid) the oncotic pressure is what at the arterial end?

lower than the hydrostatic

19

(tissue fluid) at the venous end what is the hydrostatic pressure?

low - 2.3

20

(tissue fluid) what is the oncotic pressure at the venous end?

3.3 - higher than hydrostatic

21

(tissue fluid) at the venous end oncotic pressure is higher than hydrostatic so the fluid does what?

moves back into capillaries

22

(tissue fluid) what percentage of tissue fluid returns to the blood?

90%

23

(lymph) 10% of the fluid that doesn't go back to the blood goes where?

into lymph capillaries

24

(lymph) lymph has less what?

oxygen and nutrients

25

(lymph) lymph has fatty acids from where?

the villi of the small intestine

26

(lymph) lymph capillaries join to form what?

lymph vessels

27

(lymph) the lymph is moved by what?

breathing and muscle contraction

28

(lymph) what builds up in the lymph nodes?

lymphocytes

29

(lymph) lymph nodes intercept what?

the bacteria digested by the phagocytes in the nodes

30

(lymph) lymph returns to the blood via what?

the subclavian valves

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