Ch 11c: Cardiovascular System: Heart Flashcards

(47 cards)

1
Q

What changes if either or both SV and HR is changed?

A

CO

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

CO is affected by factors leading to _________________ or _________________

A

Regulation of stroke volume
Regulation of Heart Rate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What does SV stand for?

A

Stroke Volume

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What’s EDV?

A

End diastole Volume
(volume right before systole)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What’s ESV?

A

End Systolic Volume
(Volume right before diastolic)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What’s the equation for Stroke Volume?

A

SV = EDV - ESV

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What’s affected by length of ventricular diastole and venous pressure?

A

EDV

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What’s affected by arterial BP and force of ventricular contraction?

A

ESV

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the 3 main factors that affect SV?

A

Preload
Contractility
Afterload

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What’s Preload?

A

EDV; Load that’s started with

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What’s Contractility?

A

Increased efficiency
(thus moving to a new curve)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What’s Afterload?

A

Force we are pumping against

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What’s Hypertension?

A

High Blood Pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What carries blood away from the heart and to the body?

A

Arteries and Arterioles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What exchanges vessels and connects Arterioles & Venules?

A

Capillaries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What carries blood from the body to the heart?

A

Venules and Veins

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What Tunica is this:

  • Endothelium
  • Loose connective tissue
A

Tunica Intima

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What Tunica is this:

  • Smooth muscle (thicker)
  • Elastic fibers
A

Tunica Media

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What Tunica is this:

  • Collagen fibers
A

Tunica Externa

20
Q

What only has endothelial cells?

21
Q

What is vesoconstriction?

A

Diameter decreases

22
Q

What is vesodilate?

A

Diameter Increases

23
Q

What are capillary beds?

A

Interwoven network of capillaries

24
Q

Where do capillary beds drain into?

A

Postcapillary Venule

25
What makes veins different from arteries?
They have thinner tunica interna and tunica medina
26
What stops the blood from going back down (gravity)?
Valves Skeletal Muscle Pump
27
______________: Volume of blood that flows through tissue over time period (mL/min)
Blood Flow
28
Total blood flow is ________________
Cardiac Output
29
______________ for individual organs vary, depending on organ's needs
Blood Flow
30
__________ is needed to make blood flow
Pressure
31
What is Arterial Pulse?
Alternative expansion and recoil of a blood vessel that occurs as the heart beats
32
Where is Arterial Pulse monitored?
At pressure points
33
What generates Blood Pressure?
Heart
34
Pressure is highest in _________ and declines throughout ____________
Aorta Pathway
35
What is pressure gradient?
Driving force to keep blood moving
36
What are the 2 arterial blood pressures that are measured?
Systolic Diastolic
37
What is Systolic pressure?
Pressure in the arteries at the peak of ventricular contraction
38
What is Diastolic pressure?
Pressure when ventricles relax
39
How is blood pressure expressed?
Systolic pressure over Diastolic pressure
40
What is resistance?
Opposition to flow
41
What is Peripheral Resistance?
Amount of friction blood encounters with vessel walls
42
What are the 3 important sources of resistance?
Blood Viscosity Total Blood Vessel Length Blood Vessel Diameter
43
What does MAP mean?
Mean Arterial Pressure
44
What does TPR mean?
Total Peripheral Resistance
45
What is the equation for MAP?
MAP = CO x TPR
46
What can we alter to change Pressure?
HR SV TPR
47
What factors affect TPR?
Viscosity of fluid, length of vessel, diameter of vessel