Lesson 19 (Part 1) Flashcards Preview

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Flashcards in Lesson 19 (Part 1) Deck (28)
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1

Hemodynamic

Study of blood flow

2

What is used to detect the motion of the heart and blood flow?

The Doppler effect

3

What will Doppler Ultrasound detect?

Quantify and evaluate blood flow

4

What makes up the circulatory system? (6)

1. Heart
2. Arteries
3. Arterioles
4. Capillaries
5. Venules
6. Veins

5

How much blood do humans have?

5L

6

What does blood consist of? (4)

1. RBC
2. WBC
3. Platelets
4. Plasma

7

What is the function of blood?

1. Carries O2 and CO2
2. Transports nutrients
3. Gets rid of wastes
4. Provides colour to skin

8

How many chambers does the heart have?

4
- 2 atria
-2 ventricles

9

What kind of muscle makes up the heart?

Cardiac muscle

10

How many valves does the heart contain?

4

11

What is the flow path of blood? (14)

1. SVC/IVC
2. Right atrium
3. Tricuspid valve
- right artrioventricular valve
3. Rt ventricle
4. Pulmonary valve
- semilunar
5. Pulmonary arteries
6. Lungs
7. Pulmonary veins
8. Left atrium
9. Mitral valve
- bicuspid
- left atrioventricular valve
10. Left ventricle
11. Aortic valve
12. Ascending aorta/aortic arch
13. Carotid/subclavian arteries
- upper body
14. Descending aorta
- lower body

12

What kind of blood is in the pulmonary arteries?

Deoxygenated blood
- away from the heart

13

What happens in the lungs?

Gas exchange

14

What kind of blood do pulmonary veins carry?

Oxygenated
- towards the heart

15

Systol

Heart contraction

16

Diastol

Heart relaxing

17

Do arteries have valves?

No

18

What is the 1 valve arteries have?

The aortic valve

19

What kind of flow is in arteries?

Pulsatile flow

20

Are arteries compressible?

Generally no

21

What do arteries become?

Arterioles

22

Do veins have valves?

Yes

23

What kind of flow is in veins?

Less pulsatile flow

24

Are veins compressible?

Yes

25

What do veins extend into?

Venules

26

What occurs in the capillaries?

Nutrient and gas transfer

27

What do capillaries join?

Arterioles and venulse

28

How big are capillaries?

1 cell think
- 1 layer
- few um in size