24 



ANATnMV IN A NUTSHELL. 



2. From the number of parts, as Biceps, which means Two heads, and 

 Triceps, which means three head-. 



From the shape, as Deltoid, like the Greek letter delta, inverted. 



1 From the function, as Levator anguli scapulae, which means to lift 

 the angle of the scapula. 



From the position, as Subclavius and Subscapularis which means under 

 the clavicle and under the scapula. 



6. From the function, attachment and shape, as Pronator radii teres, 

 which means this muscle first pronates, second it is attached to the radius, and 

 third it is round teres I. 



.Muscle*, have tv\<> or more points of attachments; the part which is most 

 stationary is called the "origin" and is generally the larger; the most movable 



PLATE III. 



Showing the Origin and Ensertion op the Biceps. 



part is called the "insertion" and is generally the smaller pan of the attach- 

 ment of the muscle. (Plate ill.) Muscle- must have a blood and nerve 

 supply in order to be in a healthly condition. Principle: Function makes struc- 

 ture and the cessation of function leads to the disappearance of structure. For 

 instance, in the primative man the Pectorialis minormuscle was continued from 

 the coraciod process of the scapula to the humerus; now this part of the muscle 

 is a Ligament. Again, the internal lateral ligament of the knee was at one time 

 a part of the Adductor magnus muscle. Thelong external lateral Ligament of 

 the knee was at one time a pari of the Peroneus Longus, and the ligamentum 

 teres belonged to the Pectineus muscle. 



Joints \m> Ligaments. A joint is made up of two or more hones, a syn- 

 ovial membrane, articular cartilage, white fibrous cartilage, and ligaments, 

 and is for the purpose of motion. The bones are larger where they enter into 



