65 : BOTANIC PHYSICIAN. 
called auricles and ventricles. The auricles are situated upon the 
base of the heart, and are so named from their resemblance to dog’s 
ears. They are composed of numerous muscular fibres, which are 
very delicate, and are lined by an extremely sensible and contractile 
membrane. They surround the origin of the fountain and lung ar 
teries, when distended, and are separated from each other by a 
The right auricle has opening into it, at’its upper part, the uppet 
cave vein, at its lower part, the lower cave vein, and at one side, 
‘it has open 
. in various directions, called 
__Bected with the valves.ofj 
a ae 
, called, from their 
ger — the right; besides the 
es rom the. left auri i a 
rough which it transmits its blood, ‘od eh i no a : 
eh. prises pom it and has, like the lung artery, three — 
he vessels of the heart are, common | 
- are, the fountain, ea a. 
¥ 
fers va : ‘ proper ; the enrainale a 
proper : and vein ' = 
of the eig! ‘ny © crowning arteries and vein crater: otha eric wos : 
aie = ocd and great rib. Use et nerves are branches. z 
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