4.
Location of the Muscle Attachment (Association with Bone)
Many
muscles are named as a result of their association with
a particular bone. The temporalis muscle is found
covering the temporal bone while the frontalis
muscle is found covering the frontal bone of the skull.
5.
Location of Muscle's Origin and Insertion on Bones:
All
muscles have an origin and insertion. The origin is the
part of the body, usually a bone, where the muscle attaches,
and does not move when the muscle contracts. The insertion
is the part of the body where the muscle attaches, and
moves when the muscle contracts. Some muscles are named
based upon their origin and insertion. The first part
of the muscle name indicates the origin while the second
part indicates the insertion. For example, the muscle
that has its origin on the breast bone and clavicle (collar
bone) and that inserts on a breast shaped process of the
skull is termed the sternocleidomastoid: sterno
(G: "breast bone"), cleido (G: "clavicle"),
and mastoid (G: "breast shape").