AXATOMV IX A NUTSHELL. 



.-).)< 



ox each side of it are the Levator aid muscles and the recto-vesical fascia. 



The vagina has three coats: 



1. Outer or fibro-elastic. 2. Middle or muscular. 3. Mucous or internal. 



The circular fibers near the entrance constitute the Sphincter vagina mus- 

 cle which has been described on page 493. 



The mucous lining of the vagina is covered with squamous laminated 

 epithelium, it has no "lands but is furnished with crypts and follicles, there- 

 fore the fluid which moisten- it is the nature of a transudation rather than 

 that of a secretion. 



Nerve Supply. — Hypogastric plexus, the fourth sacral, and the pudic 

 ei ve. 



PLATE CCLXXXIII. 



TERMINATION OF SEMICIRCULAR CANALS 



CONNECTION OF MODIOLUS WITH CUPOLA 



APEX OF MODIOLUS 

 FIRST WINDING OF COCHLEA 



SECOND WINDING OF COCHLEA 



SCALA TYMPANI INFERIOR 

 THIRD HALF WINDING 

 OF COCHLEA 



BASE OF COCHLEA 



The Boxy Cochlea. 



Blood Supply. — A branch of the internal iliac artery, on either side. 

 passing to the vagina and base of the bladder. This artery corresponds to the 

 inferior vesical artery in the male. It also receives branches of the uterine 

 artery. 



Lymphatics of the vagina end in the pelvic inguinal nodes. 



LESSON CXCII. 



The uterus is that pari of the female sexual passage to which a ripe ovum 

 is conveyed from the ovary ami in which it is detained in gestation until the 

 fetus is matured and expelled in parturition. The non-pregnan1 human uterus 

 is a pear-shaped organ about three inches long: with a broad flattened part 

 above called the body and a narrow, more cylindrical pari below called the cer- 

 vix. Within is a cavity which passes out in the Fallopian tube on each side 

 above ami below opens into the vagina. The cavity narrows as it passes into 

 the cervix at the internal os and continues downward to the cervical canal to 

 terminate at the external os uteri or OS tinea'. The uterus i> supported by the 

 broad ligament which is a transverse fold of peritoneum ami embraces it on 

 each side. It has accessory ligaments, such as the round ligament, vesico- 

 uterine ligament, and lecto-uterine ligament. It consists of :i serous or peri- 



