OLFACTORY ORGAN. 455 



surface of the epithelial layer and is short. It ter- 

 minates in six to eight short firm hairs. The lower 

 thinner process is a neuraxone which passes through 

 the cribriform plate to terminate in telodendria in 

 the region of the olfactory bulb. The sustentacular 

 cells are long columnar elements with oval nuclei. 

 They give support to the ganglion cells. 



Large branched tubular glands are present, called 

 the glands of Bowman. They secrete an albuminous 

 or serous fluid. Beneath the epithelium there is a 

 rich supply of capillary blood-vessels and lymphatics. 

 Fibers from the trigeminal nerve terminate in telo- 

 dendria among the epithelial cells of the entire 

 olfactory region. 



