3.3 Chambers of the Heart Flashcards
1
Q
Identify the Right atrium and all of its associated structures.
A
- Pectinate muscles
- Crista terminalis: the corresponding muscular ridge on the inner aspect of the sulcus terminalis. This ridge separates the smooth from the rough walled portion of the right atrium.
- Interatrial septum
- Limbus of fossa ovals: the prominent oval margin of the fossa ovalis in the right atrium.
- Fossa ovalis
- Opening of the coronary sinus
- Right atrioventricular (AV) valve (tricuspid valve)
- Right auricle
2
Q
Identify the Right ventricle and all of its associated structures.
A
- Interventricular septum
- Trabeculae carneae
- Conus arteriosus: the smooth-walled entry into the pulmonary trunk.
- Supraventricular crest: the ridge separating the smooth – from the rough – walled parts of the ventricular wall.
- Right atrioventricular (AV) valve (tricuspid valve)
3
Q
Identify the Right AV valve and its components.
A
a. Cusps
b. Chordae tendineae
c. Papillary muscles
(1) Septal
(2) Anterior
(3) Posterior
d. Septomarginal trabecula (moderator band): extends from the septum to the base of the anterior papillary muscle.
4
Q
Identify the Left atrium and all of its associated structures.
A
- Left auricle
- Pectinate muscles
- Interatrial septum
- Left atrioventricular (AV) valve (bicuspid, or mitral, valve)
5
Q
Identify the Left ventricle and its components.
A
- Left atrioventricular (AV) valve (bicuspid, or mitral, valve)
- Interventricular septum
- Chordae tendineae
- Papillary muscles
a. Anterior
b. Posterior - Trabeculae carneae
6
Q
Identify the Aortic semilunar valve and its components
A
- Aortic sinuses: specific to the aortic semilunar valve), which contain the openings of the right and left coronaries
- Cusps: the thinner superior rim of the valve cusps
- Lunules: the thinner superior rim of the valve cusps
- Nodules: the central elevation at the midpoint along the lunule
