Localization of Spinal Lesions. 21 



motor paralysis, but if farther back induces motor para^'sis on 

 the same side of the bod}-. 



Transverse section of the cervical lateral columns causes 

 motor paralysis of the lateral walls of the chest (respiratory 

 tract). If the section is made in the dorsal or lumbar region it 

 is the same as lesion of the superior columns. 



Among reflex centres in the cord the following may be named : 



The Respiratory Tract in the cervical lateral columns just 

 referred to. 



A Glycogenic Centre in the anterior cervical section be- 

 tween the bulb and the fourth cervical nerve. 



Centres which Dilate the Pupil between the fifth cervical 

 and the sixth dorsal nerve. 



Cardiac Accelerator Centres between the three last cervical 

 and the five first dorsal nerves. 



Vaso-Motor Sudoriparous Centres in the central gray 

 matter. 



Centre for Anal Sphincter between the sixth and seventh 

 dorsal nerves. 



Centre for Vesical Sphincter between the third and fifth 

 lumbar nerves. 



Genital Centre, opposite the first lumbar nerve. 



Vasomotor and Trophic Centres are found in the inferior 

 horns of gray matter, and their degeneration causes progressive 

 muscular atrophy. 



The Muscular Sense Tract is located near the surface of 

 the superior columns, .so that a certain amount of incoordination 

 and unsteadiness of progression follows its destruction. 



The Deeper Part of the Superior Columns and the Column 

 of Goll which bounds the superior median fissure control mus- 

 cular sense and coordination, and their disease (posterior lateral 

 sclerosis) entails locomotor ataxy. 



