What are the two heads of the sternocleidomastoid muscle?

What are the two heads of the sternocleidomastoid muscle?

It arises by two heads: a medial rounded and tendinous sternal head (SH) a lateral fleshy clavicular head (CH).

What is clavicular head of sternocleidomastoid?

The clavicular head of the sternocleidomastoid muscle is the more lateral and posterior of the two heads of origin of the sternocleidomastoid muscle. It connects the skull to the clavicle and allows the head to flex or rotate. The sternocleidomastoid is clinically significant as an anatomical landmark.

What muscle has both sternal and clavicular?

sternocleidomastoid muscle
The sternocleidomastoid muscle is a two-headed neck muscle, which true to its name bears attachments to the manubrium of sternum (sterno-), the clavicle (-cleido-), and the mastoid process of the temporal bone (-mastoid).

What is the apex formed by the sternal and clavicular heads of sternocleidomastoid called?

It is given the name sternocleidomastoid because it originates at the manubrium of the sternum (sterno-) and the clavicle (cleido-) and has an insertion at the mastoid process of the temporal bone of the skull….Sternocleidomastoid muscle.

What muscles rotate the head?

The major muscle that laterally flexes and rotates the head is the sternocleidomastoid. In addition, both muscles working together are the flexors of the head. Place your fingers on both sides of the neck and turn your head to the left and to the right.

What is the Sternohyoid?

The sternohyoid is a paired, flat strap of muscle that serves to fix the hyoid bone as well as depressing the larynx in phonation and in the terminal phase of swallowing.

What is the origin of the sternocleidomastoid quizlet?

The sternocleidomastoid muscle is a two-headed neck muscle, which true to its name bears attachments to the manubrium of sternum (sterno-), the clavicle (-cleido-), and the mastoid process of the temporal bone (-mastoid).

What is the head rotation?

Head rotation or the head-turn maneuver is another postural adjustment that can function as an effective short-term compensation to improve swallowing function. The anatomic result of this postural maneuver is a narrowing or closing off of the swallowing tract on the side toward which the head is turned.

Where is sternocleidomastoid located?

neck
The sternocleidomastoid is a superficially located neck muscle that plays an important role in tilting your head and turning your neck, as well as other things. It courses from the back of your head and attaches to your breastbone and collar bone.

What is the clavicular head of the sternocleidomastoid muscle?

Clavicular Head of Sternocleidomastoid Muscle The clavicular head of the sternocleidomastoid muscle is the more lateral and posterior of the two heads of origin of the sternocleidomastoid muscle. It connects the skull to the clavicle and allows the head to flex or rotate. The sternocleidomastoid is clinically significant as an anatomical landmark.

What are the symptoms of the sternocleidomastoid syndrome?

This article presents a case study of a patient diagnosed with dysfunction of the sternocleidomastoid (SCM) muscle, a condition which can result in head and face pain, nausea, dizziness, coryza, and lacrimation. In this particular case, the SCM muscle had developed tightness and weakness with presence of multiple trigger points within both heads.

How is the clavicular head different from the sternal head?

Compared to the sternal head, the clavicular head is thinner and wider, as it has a much larger origin along the medial third of the clavicle. Its muscle fibers run almost vertically compared to the oblique fibers of the sternal head.

Where does the clavicular branch attach to the sternum?

Both divisions of the muscle attach to the head of the mastoid process and along the superior nucheal line.1The sternal division attaches below the sternum and the deeper clavicular branch attaches posteriorly and laterally onto the clavicle.