Brainscape's Knowledge GenomeTM

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


See full index

Physl > Cardiovascular Physiology 20 > Flashcards

Cardiovascular Physiology 20 Flashcards

1
Q

Through what nerves does the heart receive sympathetic innervation?

A

Through the Thoracic spinal nerves

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

Through what nerve does the heart receive Parasympathetic innervation?

A

Through Vagus nerve

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

Which parts of the heart do Sympathetic postganglionic fibers innervate?

A
  • Atria
  • Ventricles
  • SA node
  • AV node
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Which neurotransmitter do Sympathetic postganglionic fibers release?

A

Norepinephrine

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

Which parts of the heart do Sympathetic nerves innervate?

A
  • Atria
  • Ventricles
  • SA node
  • AV node
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which part of the heart do Parasympathetic nerves innervate?

A
  • Atria
  • SA node
  • AV node
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Which neurotransmitter do Parasympathetic nerves release?

A

Acetylcholine

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

Why is the ventricular myocardium not affected by Parasympathetic activity?

A

Because it does not have parasympathetic innervation

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

How does the Sympathetic nervous system affect the adrenal medulla?

A

It causes the releases of epinephrine from the adrenal medulla

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

What kind of receptors are there for Norepinephrine and Epinephrine?

A

Beta adrenergic receptors

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

What kind of receptors bind to acetylcholine?

A

Muscarinic receptors

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

How does Parasympathetic stimulation affect the SA node?

A

It decreases the rate of depolarization to threshold, decreasing the heart rate

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

How does the Parasympathetic system affect the AV node?

A

It decreases the conduction of the AV node increasing the AV nodal delay

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

How does the Parasympathetic system affect Atrial muscle?

A

Decreases contractability

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

How does the Parasympathetic system affect Ventricular muscle?

A

No significant innervation

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

How does Sympathetic stimulation affect the SA node?

A

Increases the rate of depolarization to threshold, increasing heart rate

17
Q

How does Sympathetic innervation affect the AV node?

A

Increases conduction, decreasing the AV nodal delay

18
Q

How does Sympathetic innervation affect the Atrial muscle?

A

Increases contractability

19
Q

How does Sympathetic innervation affect Ventricular Muscle?

A

Increases contractility

20
Q

What is Cardiac Output?

A

The amount of blood pumped by each ventricle in one minute

21
Q

What does Cardiac Output provide insight on?

A

An indication of ventricular efficiency overtime

22
Q

What is the formula for Cardiac Output?

A

CO = HR * SV

23
Q

What is Stroke Volume?

A

The amount of blood pumped out of each ventricle during systole

24
Q

What are the two ways to alter cardiac output?

A
  • Altering the heart rate

* Altering the stroke volume

25
Q

How can HR be altered?

A

By altering the activity of the SA node

26
Q

How can stroke volume be altered?

A

By altering the contractility of the ventricular myocardium

Physl (94 decks)

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