84 ANATOMY AND PHYSIOLOGY FOR NURSES 



Action, extends the foot and rotates it slightly inward. 

 Nerve, internal popliteal. 



The nurse should ascertain, from the illustrations, the 

 location of the other muscles of the leg, particularly of the 

 flexors, which assist in the several movements of the leg 

 and foot. 



The Muscles of the Foot. The muscles of the foot 

 are the following: The extensor brevis digitorum, dorsal 

 interossei, abductor hallucis, abductor minimi digiti, 

 flexor brevis digitorum, flexor accessorius, lumbricales, 

 flexor brevis hallucis, adductor transversus hallucis, 

 flexor brevis minimi digiti, transversus pedis, and plantar 

 interossei. 



While ^an accurate knowledge of the exact location of 

 each of the muscles of the foot is not an absolute requisite, 

 the nurse should, by reference to the illustrations, seek 

 to familiarize herself with their names and their general 

 location. 



The anterior annular ligament consists of an upper 

 vertical portion, which binds down the tendons as they 

 descend downward to their several attachments (without 

 this no power would be obtained) and a horizontal portion. 

 This, with the internal and external annular ligaments, 

 supports all the tendons, assisted by the fascia of the parts. 



MUSCLES OF THE PERINEUM 



The perineum is the anterior portion of the outlet of 

 the pelvis. It is the space that lies between the anus and 

 the genital organs. The muscles of this region are divided 

 into two groups those that control the organs of genera- 

 tion and those governing the urethra and the terminal 

 portion of the rectum. 



In the male the muscles of this region are : The acceler- 

 ator urinae, erector penis, transversus perinei, compressor 

 urethrae, sphincter ani, levator ani, and coccygeus. 



