Heart & Great Vessels Flashcards

1
Q

What is the function of the cardiovascular system?

A

Maintaining homeostasis
Transporting waste, hormones, signals, dissolved gasses, immune response cells.
Regulates body temperature

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

____ go to the heart and ____ go away from the heart.

A

Veins, arteries

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

What are the two circuits of the circulatory system?

A

Pulmonary and systemic

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

What is the mediastinum?

A

Where the heart is located, between the lungs.

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

What is the apex of the heart?

A

Where blood is ejected without force

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

Where is the heart contained?

A

In the pericardial cavity

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

What are the three layers of the pericardium?

A

Visceral (epicardium - provides attachment)
Parietal
Fibrous (tough outer layer)

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

What is the myocardium?

A

The cardiac muscle

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

What is special about the parietal/visceral pericardium attachment?

A

There is a fluid-filled layer in between them that protects the heart and allows it to move with ease

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

How does a depolarization wave affect muscles?

A

Small channels allow it to move from one muscle cell to the next, creating a contraction progression through the tissues.

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

Cardiac muscle is ___(fast/slow) and ___(sustained/short)

A

slow, sustained

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

The ____ ____ sends blood to the abdomen.

A

Descending aorta

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

The superior vena cava comes from where?

A

The head and neck.

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

What does the interventricular sulcus do?

A

Separates the R and L sides of the heartt

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

What does the coronary sulcus do?

A

Separates the aorta from the ventricles

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

Which wall of the heart is thickest? Why?

A

L ventricle – gives more contractile force to drive the blood to the upper portions of the body

17
Q

Anteriorally, from L to R, what are the 3 great vessels of the heart?

A

Brachiocephalic trunk, left common carotid artery, left subclavian artery

18
Q

What are the 4 heart valves in the order the blood travels through them?

A

Tricuspid, Pulmonary, Mitral (bicuspid), Aortic

19
Q

___ is the relaxation phase and ____ is the contraction phase

A

diastole, systole

20
Q

Do diastole/systole actions refer to the atria or the ventricles?

A

ventricles

21
Q

What are the 5 stages in the conduction system?

A

Sinoatrial node, atrioventricular node, AV bundle, R/L bundle branches, purkinje fibers

22
Q

What is the P wave?

A

the initial depolarization

23
Q

What is the Q wave?

A

the delay, waiting for atrioventricular node contraction

24
Q

What is the R wave?

A

depolarization of the ventricles

25
Q

What is the S wave?

A

squeeze from the ventricles

26
Q

What is the T wave?

A

repolarization

27
Q

What is the sinus node?

A

the pacemaker