What is the superior attachment of sternocleidomastoid?

What is the superior attachment of sternocleidomastoid?

The primary actions of the muscle are rotation of the head to the opposite side and flexion of the neck. The sternocleidomastoid is innervated by the accessory nerve….Sternocleidomastoid muscle.

Origin Manubrium and medial portion of the clavicle
Insertion Mastoid process of the temporal bone, superior nuchal line

What muscle is above the ear?

The superior auricular muscle is a muscle above the auricle of the outer ear. It originates from the epicranial aponeurosis, and inserts into the upper part of the medial surface of the auricle. It draws the auricle upwards.

What is anterior to the sternocleidomastoid?

ORIGIN. Anterior and superior manubrium and superior medial third of clavicle. INSERTION. Lateral aspect of mastoid process and anterior half of superior nuchal line.

Where is the sternocleidomastoid positioned?

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 attaches to the Sternocleidomastoid?

The manubrium is part of the sternum and forms the anterior wall of the thoracic cage; it also serves as the attachment point for several muscles….Sternocleidomastoid Attachments.

Origin Insertion
Superior border/anterior surface of medial third of clavicle Nuchal line of occipital bone

What are the skeletal attachments of the sternocleidomastoid?

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 muscles are in the ear?

There are two muscles within the middle ear that function to protect it from loud noses — the Tensor Tympani and the Stapedius. Cartoon of the middle ear showing muscles that attach to ossicles (ear bones), and ear drum.

What is SCM anatomy?

Sternocleidomastoid (SCM) (synonym musculus sternocleidomastoideus) is a paired superficial muscle in the anterior portion of the neck. The sternocleidomastoid muscle (SCM) is an important landmark in the neck which divides it into an anterior and a posterior triangle.

What muscle is right above the collarbone?

The largest of these shoulder muscles is the deltoid. This large triangular muscle covers the glenohumeral joint and gives the shoulder its rounded-off shape. It stretches across the top of the shoulder from the clavicle in the front to the scapula in the back.

What is the insertion of the sternocleidomastoid muscle quizlet?

Where does the sternocleidomastoid muscle originate and insert? ORIGINATES from the external surface of the occipital bone and posterior midline of the cervical and thoracic regions. INSERTS on the lateral third of the clavicle and parts of the scapula.

Is the sternocleidomastoid muscle a two-headed muscle?

Kim Bengochea, Regis University, Denver 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).

Where is the needle located in the sternocleidomastoid muscle?

Like ST 9, the needle direction is not perpendicular, but is directed through the sternocleidomastoid muscle, in this case in an anterior direction into the clavicular head of the muscle. The Urinary Bladder sinew channel (Fig. 4) is the third sinew channel that includes the sternocleidomastoid muscle.

How to know if you have sternocleidomastoid pain in your head?

You may have some of the following symptoms: difficulty holding up your head. disorientation. dizziness or imbalance. muscle fatigue. nausea. pain in your jaw, neck, or back of your head.

What happens to the sternocleidomastoid during pathological changes?

Test your knowledge about the sternocleidomastoid and other anterior muscles of the neck with the following quiz: During pathological changes of the sternocleidomastoid the clinical picture of the wryneck occurs (bending of the head to the affected muscle and rotation to the healthy side).