Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Cardiovascular Science > Overview Of The CVS > Flashcards

Overview Of The CVS Flashcards

1
Q

Main function of the CVS

A

Transport from external to internal environment, between cells and materials leaving the body

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

Arrangement of the CVS

A

Pulmonary exchange leaves the pulmonary vein into the left atrium then ventricle then pumped out of the aorta into the arterial system. Blood flows through the systemic circulation through the venous system into the right atrium then ventricle out of the pulmonary artery into the pulmonary circulation.

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

Why are vascular beds arranged in parallel?

A

So all the beds get the same level of oxygenation and prevents changes in blood flow in one organ affecting flow in other organs.

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

Systole?

A

Phase of ventricular contraction and ejection

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

Diastole?

A

Phase of ventricular relaxation and filling

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

Blood pressure entering the heart?

A

0mmHg. It is said to be atmospheric pressure

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

Blood pressure out of the heart to the lungs?

A

25 mmHg

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

Blood leaving the aorta?

A

90mHg

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

Cardiac output?

A

Volume of blood pumper / min. = 5L/min

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

What is CO determined by?

A 
Stroke volume (volume ejected per contraction.
Heart rate (HR)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Diastole is what % of the cardiac cycle?

A

60%

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

Pulse pressure?

A

Systolic pressure - diastolic pressure

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

Ambulatory blood pressure equation

A

SP - DP / 3 + DP

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

Why does pressure drop as it moves through the system?

A

There is resistance to the flow

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

What determines pressure in the arterial system?

A

Resistance to blood flow and blood volume in the arterial system

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

Pressure equation (Ohms law)

A

Flow x resistance

17
Q

ABP equation

A

CO x TRP (total peripheral resistance)

18
Q

How is blood flow altered in arterioles

A

Vasodilation and vasoconstriction

19
Q

How are veins suited to their function

A 
Thin walls
Carry blood at low pressure
Muscle under control of ANS
Wide lumen to accommodate large volumes 
Reservoirs used to adjust ventricular filling
20
Q

How are arteries suited to their function?

A 
Carry blood at high pressure
Thick, muscular walls
Elastic layers
Relatively small lumen 
High pressure conduits
21
Q

How are venues suited to their function?

A

Low pressure
Resemble capillaries
Low pressure conduits

22
Q

How are smaller arteries, arterioles suited to their function?

A

Carry blood at modest pressure
Thick, muscular walls
Muscle under influence of local factors and ANS
Function to control flow to tissues

23
Q

How are capillaries suited to their function?

A

Carry blood at low pressure
Single endothelial cell wall
Gets blood to the call via diffusion
Maximise exchange between blood and tissue

24
Q

What % of body weight is blood?

A

Around 7%

25
Q

How is ABP maintained?

A

ABP = CO X TRP

It is maintained by negative feedback control

Cardiovascular Science (13 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions