Chapter 15B

Question 1

5) Which organ group receives the most blood at rest?

Answer 1

5) Livers and digestive tracts

Question 2

6) Which group receive the least blood at rest?

Answer 2

6) Heart

Question 3

7) What would happen to each of these numbers during vigorous exercise?

Answer 3

7) muscle, heart (increase)

Digestive (decrease)

Question 4

8) Where is the lowest pressure in the CV system?

Answer 4

8) Superior and inferior vena cava

Question 5

9) How is the slow down of blood in capillaries beneficial?

Answer 5

9) more time for diffusion

Question 6

11) Where do lymphatic ducts return liquids to CV system?

Answer 6

11) Large veins above the heart

Question 7

12) What are the functions of the lymphatic valves?

Answer 7

12) To prevent back flow (Low pressure).

Question 8

14) What structures regulate the distribution of blood flow into and through organs

Answer 8

14) Precapillary sphincters

Question 9

15) The amount of blood reaching the muscles and digestive organs is highly variable T/F

Answer 9

15) T

Question 10

16) Where in the body does the blood move most slowly (lowest velocity)?

Answer 10

16) Capillaries.

Question 11

17) Besides velocity, what drop (lowers) in the capillaries?

Answer 11

17) Hydrostatic pressure, velocity, oxygenation

Question 12

18) The mass movement of fluid between the blood and interstitial fluid is called;

Answer 12

18) Bulk flow.

Question 13

19)Bulk flow is due to (caused by);

Answer 13

19) Due to hydrostatic or osmotic pressure gradients.

Question 14

20) When bulk flow moves fluid into the capillaries it is called;

Answer 14

20) Absorption.

Question 15

21) When bulk flow moves fluid out of the capillaries, it is called;

Answer 15

21) Filtration.

Question 16

22) Large plasma proteins move out of capillaries and into the interstitial fluid as part of the bulk flow T/F

Answer 16

22) F

Question 17

23) What materials tend to move out of the blood and into most body tissues?

Answer 17

23) Water, Oxygen, and Glucose.

Question 18

24) In what areas will oxygen move into the blood?

Answer 18

24) Lungs

Question 19

25) In what areas will glucose and other food molecules move into the blood?

Answer 19

25) Gi tract.

Question 20

26) What materials tend to move into the blood from most body tissues?

Answer 20

26) CO2, nitrogenous wastes.

Question 21

27) In what areas will carbon dioxide move out of the blood?

Answer 21

27) Lungs

Question 22

28) In what areas will nitrogenous wastes move out of the blood?

Answer 22

28) Kidneys

Question 23

29) Net filtration minus net absorption equals what?

Answer 23

29) Net out flow.

Question 24

30) Approximately how much lymphatic fluid is collected by the lymphatic capillarities?

Answer 24

30) 2L a day.*

Question 25

31) In what two ways are lymphatic vessels more like veins than arteries?

Answer 25

31) Values and thin walls

Question 26

32) Lymphatic fluid is essentially the same as interstitial fluid T/F

Answer 26

32) T.*

Question 27

33) One of the most important functions of the lymph nodes is to;

Answer 27

33) Filtering the blood to initiate a immune responds

Question 28

34) How is pumping of lymphatic fluid accomplished?

Answer 28

34) Due to smooth muscle contractions in larger lymphatic vessels and to valves.

Question 29

35) Elephantiasis is a form of edema T/F

Answer 29

35) T.

Question 30

36) What reflex automatically changes blood pressure?

Answer 30

36) Baroreceptor reflex.

Question 31

37) How do kidneys help regulate blood pressure?

Answer 31

37) By changing blood volume (reabsorption of water from filtrate).

Question 32

38) What cardiovascular disease accounts for the majority of CV deaths each year?

Answer 32

38) Coronary heart (artery) disease.