88 



ANATOMY AND PHYSIOLOGY 



back. If the hands grasp a bar above the head these muscles 

 will assist to draw the body up. The largest two of L the " climbing 

 muscles'' are the latissimus dorsi and the trapezius. 

 Nerves. Spinal accessory and middle cervical. 



Note. Observe in the illustration its tendinous area, which remains flat 

 during action of the muscle. 



Fron tails 



Ear muscles 



Chin / 

 muscles 



Sterno-mastoid 



FIG. 76. MUSCLES or THE HEAD AND NECK. (Morris.) 



Clinical Note.- Spasmodic action of the trapezius is often the 

 cause of wry-neck, or torticollis, and this may be increased by 

 spasm of the splenius. 



