Vein Without Valve

Vein without valve

Formula: IPSS

There Are 4 veins Without Valve. Easy To Remember by technique: IPSS. See What IPSS Means with diagram.

I- Internal Jugular Vein

Pulmonary Vein

P- Pulmonary Vein

Superior Venacava

S- Superior Venacava

Venus Sinuses

S- Sinuses of  Brain