Anatomy & Physiology

Which 2 valves are semilunar?

1) Aortic

2) Pulmonary

Which 2 valves are atrioventricular?

1) Mitral

2) Tricuspid

Where is the mitral valve located?

Between the left atrium and left ventricle

Where is the tricuspid valve located?

Between the right atrium and right ventricle

Where is the sino-atrial (SA) node located?

Right atrium

In the mediastinum approximately what proportion of the heart lies to the left of the midline?

Two-thirds

How many leaflets does the mitral valve have?

2 leaflets

What are the positions of the mitral valve leaflets?

1) Anterior

2) Posterior

How many leaflets does the tricuspid valve have?

3 leaflets

What are the positions of tricuspid valve leaflets?

1) Antero-superior

2) Septal

3) Inferior

Which ventricle has coarse apical trabeculations?

Right ventricle

Which ventricle has smooth apical trabeculations?

Left ventricle

What physiological process does the first heart sound (S1) correspond to?

Closure of the mitral and tricuspid valves

What physiological process does the second heart sound (S2) correspond to?

Closure of the aortic and pulmonary valves

Closure of which heart valve is attributed to the first component of the first heart sound (S1)?

Mitral valve closure (M1)

Closure of which heart valve is attributed to the second component of the first heart sound (S1)?

Tricuspid valve closure (T1)

Closure of which heart valve is attributed to the first component of the second heart sound (S2)?

Aortic (A2)

Closure of which heart valve is attributed to the second component of the second heart sound (S2)?

Pulmonary (P2)