Hooper, Robert [Editor]: The Anatomist's Vade-Mecum: Containing The Anatomy, Physiology, Morbid Appearances, &c. Of The Human Body ; The Art of making Anatomical Preparations, &c. To which are added Anatomical, Physiological, Medical, And Surgical Examinations For Students (London, 1811)

( 17? )

VENA PORTiE:

A great vein which carries the blood from the abdominal
viscera into the substance of the liver. The trunk of this vein,
about the fissure of the liver, in which it is situated, is divided
into tke hepatic and abdominal portions. The abdominal por-
tion is composed of the splenic, meseraic, and internal hemor-
rhoidal reins. These three venous branches carry all the
blood from the stomach, spleen, pancreas, omentum, mesen-
tery, gall-Madder, and the small and large intestines, into
the sinus of the vena porta?. The hepatic portion of the vena
porta? enters the substance of the liver, divides into innume-
rable ramifications, which secrete the bile, and the superfluous
blood passes into corresponding branches of the vence cava
hepaticee.

ACTION OF VEINS.

Veins do not pulsate; the blood which they receive from
the arteries flows through them very slowly, and is conveyed
to the right auricle of the heart, by the contractility of their
coats, the pressure of the blood from the arteries, called the
tis a tergo, the contraction of the muscles, and respiration ;
and it is prevented fiom returning back in the vein by the
valves, of which there are a great number. t

DISEASED APPEARANCES OF VEINS.

These are, redness of the internal membrane, aneurism;
obliteration, air in the veins, varix, and abscess.