Lecture 20: Lymph and Venous Circulation and Cardiac Output (Hayward) Flashcards Preview

Undeleted > Lecture 20: Lymph and Venous Circulation and Cardiac Output (Hayward) > Flashcards

Flashcards in Lecture 20: Lymph and Venous Circulation and Cardiac Output (Hayward) Deck (32):
1

resistance to inflow --> hydrostatic pressure in capillary

decreases

2

resistance to inflow --> absorption into capillary

decreases

3

increased blood volume --> capillary filtration

increases

4

hypoproteinemia --> capillary reabsorption

decreased

5

hypoproteinemia

low blood protein

6

where do lymph vessels converge and empty into?

subclavian veins

7

lymph flow is via: (2)

1) muscle contraction
2) respiration

8

heart failure means

heart can't move blood forward

9

lymph dysfunction leads to

edema. Increased filtration pressure beyond the capacity of the lymphatics

10

3 main causes of lymph dysfunction

1) arteriole dilation
2) increased venous pressure
3) increased capillary permeability

11

does venous system have pulsatile activity?

No

12

RAP =

right arterial pressure

13

venous return is dependent upon pressure gradient between 3 things

1) peripheral venous pressure
2) great veins
3) RAP

(Differences between peripheral and central venous pressure)

14

How does breathing modulate central venous pressure during inspiration?

Venous pressure drops, resulting in increased venous return

15

How does breathing modulate central venous pressure during expiration?

Venous pressure increases, resulting in decreased venous return

16

increased venous sympathetic activity --> peripheral venous pressure

increases

17

increased blood volume --> peripheral venous pressure

increases

18

increased skeletal muscle pump --> peripheral venous pressure

increases

19

increased inspiratory movement --> peripheral venous pressure

increases

20

increased peripheral venous pressure w/o changing central venous pressure--> venous return

increases

21

increased central venous pressure --> cardiac filling

increases

22

venous return

amount of blood flowing back to the heart

23

decreased preload --> cardiac output

decreases

24

increased central venous pressure --> preload

increases

25

increased peripheral venous pressure --> atrial pressure

increases

26

increased venous return --> end diastolic ventricular volume

increases

27

increased peripheral venous pressure --> stroke volume

increases

28

pronounced jugular pulses are associated with _____atrial pressure

increased

29

preload =

filling

30

If central venous pressure decreases, but contractility increases ---> cardiac output?

increases. Shifts cardiac-function curve to the left

31

cardiac index

expected cardiac output taking several variables into consideration including age, sex, temp, etc.

32

How is more blood brought to muscles during exercise?

constriction of venous vessels

Decks in Undeleted Class (134):