Misc. Heart Flashcards
1
Q
What is an important surgical landmark for bypass?
A
Transverse sinus
2
Q
Sternocostal surface
A
R ventricle
3
Q
Diaphragmatic surface
A
both ventricles, primarily the left
4
Q
Pulmonary surface
A
L ventricle, occupies cardiac notch
5
Q
Right border
A
R atrium
6
Q
Inferior border
A
R ventricle, apex of L ventricle
7
Q
Left border
A
L ventricle, L auricle
8
Q
Superior border
A
R and L auricles, conus arteriosus
9
Q
Characteristics of cardiac skeleton
A
- fibrocartilagenous tissue
- divides atria from ventricles
- provides barrier b/w A & V for conductive system
- provides attachment for heart valves and myocardium
10
Q
What does the tendon of conus arteriosus connect?
A
Aortic to pulmonary semilunar valves
11
Q
Left fibrous trigone
A
Mitral valve to aortic semilunar valves
12
Q
Right fibrous trigone
A
AV valves to aortic semilunar valves
13
Q
R coronary contribution to SA/AV nodes
A
- 60% supplies SA node
- supplies AV node
14
Q
L coronary a contribution to SA/AV nodes
A
40% SA node
15
Q
SA node
A
- initiates impulse for contraction
- 70-80 bpm
- located at junction of SVC and R atrium
