It is the latter or afferent function with which we are now concerned.
There are two divisions of nerves, the afferent and efferent.
In some cases ligation of the afferent vessels has been successful.
The lesions of the arteriosclerotic kidney are due to narrowing and eventual obstruction of the afferent vessels.
Branchial hearts are formed on the afferent vessels of the branchiae.
The opposite or œsophageal extremity of the stomach is less well differentiated from the afferent tube of the œsophagus.
The caudal vein is, however, no longer the only afferent vein of this system.
So far, then, we have highly satisfactory evidence of tissue-tracts performing the function of afferent nerves.
From the gills the afferent branchials carry the blood to the median dorsal aorta.
Dissect along the truncus arteriosus to afferent branchials.