(seq. 43)

18 Lect. 2^d

more briskly thro' them - [?] may it not also
be owing in some Measure to the Effects of the Air, As its
Effects out of the Body cause that Appearance. The Anti-
ent Physiologists imagined the Arteries carried vital
Spirits, & the Veins red Blood, being ignorant of the Laws
of Circulation

End of Lec 2 1783

Lecture 4^th 1784
Feb 20^th

Of the Arteries.

An Artery in an animal Body, is a strong ramefying Elastic Tube
Pipe, that rises from the Heart, & goes to all Parts of the Body,
in this Sense there are but two Arteries, viz the Aorta, & pulmonary
Artery, the latter distributes the Blood to the Lungs, the former
to every Part of the Body besides. The Blood in these two Arte-
ries is supposed to be very different. In the Aorta it is fit for
Nourishment & being deprived of its nutritious quality in its
Course thro' the Body, passes thro' the Lungs to be elaborated ag-
ain , & made fit for Nutrition. Artery in Greek signifies
Air Cup. ^Definition The Bronchia being made up of Gristles, & being therefore
roughish, was called Aspera Arteria, till the Time of [Erastrites?] the
Arteries and Veins had the same Appellation, viz, they were both called
Veins, but the Arteries were called Pulsatile for Distinction, & it was
he, that first called them Arteria. ^{for Texture & Coat read p 21} The Section of the Blood Vessels
both Arteries & Veins, when filled with Blood is round, except just at
the Ramefication & there it is Oval or Elliptical - The Aorta from
the Beginning to the End ja conical, become smaller & smaller in
its Course, but the Dimension of all the Arteries taken