1962 



HUMAN ANATOMY. 



tened in front above, where attached to the penis and receiving the spermatic cords, 

 its general form is pear-shaped and somewhat asymmetrical, since the left of the two 

 oval swellings produced by the enclosed testicles and separated by a shallow longi- 

 tudinal furrow is lower than the right owing to the position of the corresponding 

 sexual gland. The scrotum varies, however, in form and appearance, even in the 

 same individual, with the condition of the subcutaneous muscular tissue. When the 

 latter is contracted, as after the influence of cold, the scrotum is drawn up and com- 

 pact and its surface corrugated by numerous transversely cur\'ed folds ; when relaxed, 

 it becomes smooth, flaccid, and pendulous. 



Indications of its formation from two distinct parts are seen externally in the 

 longitudinal raphe, which marks the line of fusion of the original halves and extends 

 longitudinally from the urethral surface of the penis over the scrotum onto the peri- 



« 



Fig. 1671. 



r- Skin 



f- — ' Superf. fascia, superf. layer 

 Deep layer 



^ Aponeurosis of 



external oblique 



Aponeurosis of 

 external oblique 



External abdominal 

 ring 



Suspensory ligament 

 of penis 



Stump of penis 



Skin 



Septum of scrotum 



Loops of cremaster 

 muscle 



Dartos 

 Skin 



ternal oblique 



Iiiiundibuliform 

 fascia 



Aponeurosis of 



external oblique, cut 

 and reflected 



Spermatic cord 



Intercolumnar fascia, 

 reflected 



Dissection of spermatic cord and scrotum. 



neum. Owing to the greater dependence of the left half of the sac, the raphe does 

 not occupy a strictly median position, but is deflected towards the left. Internally 

 evidence of the union of the scrotal halves is found in the sagittal partition {septum 

 scroti) that is continued inward from the raphe and effectually divides the scrotum 

 into a right and a left pouch. This septum, consisting of fibrous tissue rich in elastic 

 fibres and the prolongations of the dartos muscle, is attached above to the root of the 

 penis and the perineum, blending with the sheath of the bulbo-cavernosus muscle. 



Since the labio-scrotal folds, which produce the scrotum or its homologue, the 

 labia majora, according to sex, are developed (page 2041) independently of the cov- 

 erings of the spermatic cord and the testicle derived from the musculo-fascial walls of 

 the abdomen, the scrotum contributes additional envelopes for the enclosed structures. 

 These envelopes are the skiyi, which is here thin, delicate, and very elastic, unusually 

 dark, and beset with scattered crisp hairs and numerous sweat and sebaceous glands ; 



