Heart Rate Regulation Flashcards

1
Q

What are 3 types of control

A

Neural
Intrinsic
Hormonal

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

What are the 3 receptors of neural control

A

Chemoreceptors
Baroreceptors
Proprioceptors

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

Chemoreceptors

A

Detect an increase in carbon dioxide and a decrease in oxygen

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

Baroreceptors

A

Detect an increase in blood pressure

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

Proprioceptors

A

Detect an increase in muscle movement

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

Information from receptors gets sent to where?

A

Cardiac control centre (ccc)- controlled by the autonomic nervous system

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

How does info from the ccc increases heart rate?

A

Info sent to sympathetic nervous system
Stimulates accelerator nerve
Increases the firing rate of the SA node
Increases heart rate

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

Where does info from receptors go to after ccc in recovery?

A

Info sent to parasympathetic nervous system
Stimulates vagus nerve

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

Intrinsic control detectors

A

Increase in temperature
Increase in venous return

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

Increase in temperature means

A

Increases speed of nerve transmission
Increases blood viscosity

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

Increase in venous return means

A

More blood returns back to the right atrium
Right atrium stretch causes SA node to increase firing range

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

Increases firing range of SA node in intrinsic control =

A

Blood is forced down into the ventricles
Increases ventricle stretch/ contraction force
Increases stroke volume/ cardiac output

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

Hormonal control

A

Adrenaline secreted by the adrenal gland
Send to to sympathetic nervous system
Increases firing rate if SA node which increases heart rate

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