Human Anatomy Vol 1

THORAX

Precordium

Fig. 18.26: Pain of angina pectoris felt in precordium

along medial border of left arm

These are the great cardiac vein, the middle cardiac

vein, the right marginal vein, the posterior vein of the

left ventricle, the oblique vein of the left atrium, the

anterior cardiac veins, and the venae cordis minimi

(Figs 18.291r and b). All veins except the last two drain

into the coronary sinus which opens into the right

atrium. The anterior cardiac veins and the venae cordis

minimi open directly into the right atrium.

Coronory Sinus

The coronary sinus is the largest vein of the heart. It is

situated in the left posterior coronary sulcus. It is about

3 cm long. It ends by opening into the posterior wall of

the right atrium. It receives the following tributaries.

Oblique

veln of left

atrium

Left

marg jnal

and

I nternal

mammary

artery graft

Arierial graft

Pulmonary

trunk

Right atrium

Coronary

SINUS

Anterior

cardiac vein

Right marginal Great

cardiac

Small cardiac vein vetn

Posterior vein of

left ventricle

Middle cardiac vein

Right

Oblique

vein of

left atrium

Coronary

SINUS

(b)

Figs 18.29a and b: Veins of the heaft: (a) Sternocostal surface,

and (b) diaphragmatic surface

(a)

Venous gfaft

Site of

blockage

Small

cardiac

vein

Middle

cardiac

vein

x(l,
L
o
s
F
N
co
.F
oo
a

Fig. 18.27: Stent passed in the blocked coronary artery

Fig. 18.28: Grafts put beyond the site of blockage