The purpose of this study was to determine the morphology of
the rabbit carotid body and its artery at the light microscopy
level. The carotid body was situated between the internal and
external carotid arteries after the bifurcation point of the
common carotid artery. The carotid body was usually found to
be a single, ovoid tissue mass but, in some cases it consisted of
two or three parts. More carotid bodies were supplied by a
single carotid body artery (glomic artery) which arose from the
common carotid artery or the internal or external carotid
arteries near the bifurcation point of the common carotid
artery. In only one case were there two arteries which arose
from opposite sides of the external carotid artery at its origin.
There was a distinguishable sinus (glomic sinus) at the origin of
the glomic artery. This artery had a thin wall with elastic laminae
in the sinus area which become thinner distal to the sinus.