This time i'm going to be talking about the different
muscles of the interior neck so what i'm going to be doing here is describing
the different muscles that we find on the interior portion of your neck we will
talking about the different origins insertions innervation functions associated
to all of these muscles these muscles that define the interior portion of your neck
now the list includes.
the sternocleidomastoid
the scalene muscles
the infrahyoid muscle group
the suprahyoid muscle group
the longest capitus muscle
the longest coli muscle and the platysma
this is known as the sternocleidomastoid muscle and this muscle is a two-headed muscle of the neck and you have one on each side of the neck as you can clearly see on this image:
the muscle lies superficiallyso that it is both easily visible and palpable thus every one of us has already seen it or know about it but now you know the actual name that we use to describe it in anatomy.
you can see and touch the left one when you turn your head to the right and vice versa now in terms of the origins for the sternocleidomastoid muscle this muscle has two heads a sternal head and a clavicular head now the sternal head originates from the manubrium of the sternum while the clavicular head will originate from the medial
one-third of the clavicle so two heads for the sternocleidomastoid muscle in terms of the insertion point for this muscle the insertion is the mastoid process of the temporal bone and also the superior nuchal line of the occipital bone will serve as an insertion point for the sternocleidomastoid when it comes to the innervation for this muscle it is innervated by the accessory nerveor cranial nerve.
