34 CULPEPER’s ENGLISH PHYSICIAN, 
water, it will make an “apparent pulfation or bubbling, much more if the water wat. 
“eentained i in jong narrow veffels with valves, that it might not return backs” but, 
if you fuck with'the prpe, then it runs fmoothly, without pulfation’ of leaping? 
therefore thé blood in the arteries hows with pulfation, from the expulfive Faculty 
of the heart, caufed by its fpirits ; but it flows in the veins f{moothly, or without pul 
fation, becaule it is fucked or drawn back again by the attractive faculty, caufed 
by want of fpirits, or blood, or their being wafted by the heart's perpetual expul- 
“fation: The fituation of the arteries is deep, always under the veins both in the 
external and internal parts, the abdomen, a little below the kidneys, only except- 
ed; for, after that the vena cava and aorta defcending fram the diaphragma have pat 
be the region of the kidneys, the cava hides itfelf under the aorta, through all. that 
region, till they pafs out of the abdomen; and then the artery again hides ittelf | 
. tinder the cava. The magnitude of the aorta is very great, but the defcendant ‘part 
_ “Ws greater than the afcendant, becaufe the number of the internal parts is ‘greater 
“than of the external. The number of the arteries is lefs than of the veins, becatife 
the paffage of the blood is quick through the arteriés, but flow through the veins; 
‘but there are more arteries than we can well difcern, becaufe the capillary arteries 
‘are'very much like the veins. Their fabftance i is ‘membranows, fo that they ‘canbe 
“both diftended and contra&ted more than the veins; and it confifts of two peculie 
“tunicles; the exterior is thin, foft, and rare, like the tunicle of a vein; the interior 
» 48 compaét, hard, and very thick, five times thicker than the tunicle of the veins 5 
“that thereby thé arteries’ may be ftrong to endure their perpetual motion, and” fo 
ap in their thin and fpitituous blood, ‘which would foon vanifh and fly away. 
The arteria magna, or aorta, the great and chiefeft artery, comes from the: left ven- 
» thicle'of the heart, with a ‘wide orifices it°has a double tunicle, the jinnermoft of 
“which is five times thicker, left,’ by continual pulfation about the hard and: folid 
parts, it might incur an incurable rupture. From the ventricle of the heart, before 
9 perforates the pericardium, it fends forth t to the heart itfelf the coronary artery, 
“which: as the bafis of the heart, fometimes fingle, fometimes double Ae 
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a ‘The firaller or attendee tank of the aorta; or arteria magna, neath upon nthe 
“ wind-pipe, provides for all the parts about the heart,” and is ‘divided into ro fab- : 
~~ davial! ‘bratiches, the latter rifing lower, and: going more obliquely to the arm 3 ; ; the 
“other, béfore they go out of the’ thorax, (for afterwards they are Called ‘axillares,) 
> produce the intercoftales Juperiores, proper to three or four upper ribs: from their 
none? part arife four arteries : 1. mammarie, which go to the paps; 2 a 
whit 
