Answer:
There are seven different types of criteria for naming skeletal muscles:
Location: Some muscles are named based on their location in the body, such as the pectoralis major (located in the chest) or the quadriceps femoris (located in the thigh).
Shape: Some muscles are named based on their shape, such as the deltoid (triangular), trapezius (trapezoidal), or orbicularis (circular).
Size: Some muscles are named based on their size, such as the gluteus maximus (largest muscle in the buttocks) or the adductor magnus (largest muscle in the inner thigh).
Direction of fibers: Some muscles are named based on the direction of their fibers, such as the rectus abdominis (fibers running vertically) or the transverse abdominis (fibers running horizontally).
Number of heads: Some muscles are named based on the number of heads or points of origin, such as the biceps brachii (two heads) or the quadriceps femoris (four heads).
Action: Some muscles are named based on their action or function, such as the flexor carpi radialis (flexes the wrist and abducts the hand) or the extensor digitorum (extends the fingers).
Origin and insertion: Some muscles are named based on their points of origin and insertion, such as the sternocleidomastoid (originating from the sternum and clavicle and inserting on the mastoid process of the skull).
Step-by-step explanation: