Human Anatomy Vol 1

Chorion laeve

Decidua basalis

Chorion

Chorionic villi

Amnion

Attachment of

umbilical cord

to placenta

Uterine veins

Left pulmonary

artery

Left lung

Two pulmonary

vetns

Subclavian

artery and vein

Cervical canal

PEBICARDIUM AND HEART

Two umbilical

arteries and

one umbilical

vein (red)

Portal vein

Umbilical vein

lnferior

vena cava

Ductus venosus

Pulmonary trunk

Foramen ovale

Superior

vena cava

Arch of aorta

with 3 branches

Fig. 18.31 : Foetal circulation rn sltu (schematic)