Chambers of the Heart Flashcards

1
Q

What does the right atrium receive deoxygenated blood from?

A

SVC, IVC and coronary veins

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

In anatomical position, what does right atrium form?

A

Right border of heart

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

What can interior surface of right atrium be divided into?

A

Rough and smooth –> sinus venarum and atrium proper

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

What are the rough and smooth parts of the right atrium separated by?

A

Muscular ridge –> Crista terminalis

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

What is the smooth part of the right atrium?

A
Sinus venarum (located posterior to Crista terminalis) 
- Receives blood from SVC and IVC
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the sinus venarum derived from?

A

Embryonic sinus venosus (right horn that is absorbed by right atrial wall)

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

What is the rough part of the right atrium?

A

Atrium proper (anterior to crista terminalis)

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

What are the rough, muscular walls of the atrium proper formed by?

A

Pectinate muscles

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

What is the atrium proper derived from?

A

Primitive atrium

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

What separates the left and right atria?

A

Interatrial septum (solid muscular wall)

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

What is the small depression in the septal wall in the right atrium?

A

Fossa ovalis

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

Where doe the left atrium receive oxygenated blood from?

A

4 pulmonary veins

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

In the anatomical position, what does the left atrium form?

A

The posterior border of the heart

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

What can the interior surface of the left atrium be divided into?

A
  1. Inflow portion (smooth)

2. Outflow portion (rough)

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

Describe the inflow portion of the left atrium

A
  • Receives blood from pulmonary veins

- Surface is smooth and derived from pulmonary veins themselves

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

Describe the outflow portion of the left atrium

A
  • Located anteriorly
  • Includes left auricle
  • Lined by pectinate muscles (rough)
17
Q

Where is the outflow portion of the left atrium derived from?

A

Embryonic atrium

18
Q

In the anatomical position, what does the right ventricle form?

A

Majority of anterior border of the heart

19
Q

What can the right ventricle be divided into?

A

Inflow and outflow portion

20
Q

What is the inflow and outflow portion of the right ventricle separated by?

A

Muscular ridge (supraventricular crest)

21
Q

Describe the interior surface of inflow part of right ventricle

A

Covered by series of irregular muscular elevations called trabeculae carnae (sponge-like appearance)

22
Q

Where can the trabeculae carnae be found?

A

Inflow part of left and right ventricle

23
Q

What can trabeculae carnae be grouped into?

A
  1. Ridges
  2. Bridges (moderator band)
  3. Pillars (papillary muscles)
24
Q

What is the outflow portion of the right ventricle called?

A

Conus arteriosus

25
Describe the conus arteriosus
- Leading to the pulmonary artery - Located in superior aspect of ventricle - Smooth walls (no trabeculae carnae)
26
Where is the conus arteriosus derived from?
Embryonic bulbus cordis
27
In the anatomical position, what does the left ventricle form?
The apex of the heart, as well as the left and right diaphragmatic borders
28
What can the left ventricle be separated into?
Inflow and outflow portion
29
Describe the inflow portion of the left ventricle
- Rough (lined by trabeculae carnae) | - 2 papillary muscles attached to cusps of mitral valve
30
What is the outflow portion of the left ventricle called?
Aortic vestibule
31
Describe the aortic vestibule
- Leading to aorta | - Smooth wall (no trabeculae carnae)
32
Where is the aortic vestibule derived from?
Embryonic bulbus cordis
33
What is the sinus venarum?
Smooth (posterior) part of right atrium
34
What is the atrium proper?
Rough (anterior) part of right atrium
35
What is the aortic vestibule?
Smooth outflow part of left ventricle
36
What is the conus arteriosus?
Smooth outflow part of right ventricle
37
Where is the rough part of the left ventricle derived from?
Primitive ventricle
38
Where is the rough part of the right ventricle derived from?
Primitive ventricle