THE ANATOMY OF THE PITUITARY BODY 



routes: aiferent arteries and afferent portal veins which origi- 

 nate in the region of the stalk from a plexus both surrounding 

 and penetrating the infundibular stem (see Fig. i). The ter- 

 minal parts of these arteries and veins unite to form the 



Fig. I. — The blood vessels of the human pituitary body as revealed by a dissec- 

 tion of the base of the brain, s.fi.a.: superior hypophysial arteries, anastomosing 

 arteries supplying the pars neuralis, pars intermedia, and pars glandularis, p.v.: 

 portal veins on the stalk, b.v.: basilar veins, into which blood only from the floor 

 of the hypothalamus flows. (From Wislocki and King, Amer. J. Anat., 58, 421-72 

 [1936].) 



sinusoids characteristic of the pars glandularis. Blood leaves 

 the pars glandularis in veins passing from the lateral poles of 

 the anterior lobe to the cavernous sinuses. The eminentia 

 saccularis, infundibulum (pars neuralis), and pars intermedia 

 are supplied with arteries and drained by veins which are 



[3] 



