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Slructure of the Heart

CARDIOYASCULAR PHYSIOLOGY

Mitral valve

Poslerior cusp-

Ascending aorta-v

L. cusp—v Posterior \ (noncoronary) cusp v Superior    N.

Aortic

valve

Mem-

branous

septum

[ Anterior (aortic) cusp-R. pulmonary

Anterior (aortic) cusp of mitral valve-1

. Pulmonary trunk

L pulmonary

•Ascending aorta ■ Orifices of coronary, • R. auriclo

■ L. cusp •R.cusp

Aortic

• Outflow

Atrio \ ventricular

pan-_N

Inter

ventricular part^—

■ Conus arteriosus

■ R. anterior papillary

Moderator 1 Jr Septal band J ^N L. ventride

Muscular

interventricular

R. atrium

Anterior

cusp

(retracted) Medial (septal) y

cusp —'

Posterior cusp-'

R. vcntridc-'

R. anterior papillary musde (cut)

Figurę 4.3 Structure of Heart

This interior view of the heart shows its four chambers, valve$, and septa. The right side of the heart receives blood firom the systemie circulation and pumps it into the pulmonary circulation. The left side of the heart receives blood returning from the pulmonary circulation

and pumps it into the systemie circulation. The work of the left ventri-de is significantly greater than that of the right yentride, and its walls are correspondingly much thicker.

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