When
acting together it flexes the neck and extends the head
. When acting alone it rotates to the opposite side (contralaterally) and slightly (laterally) flexes to the same side. It also acts as an accessory muscle of inspiration.
What does Sternocleidomastoid attach to?
| Origin Insertion | Superior border/anterior surface of medial third of clavicle Nuchal line of occipital bone |
|---|
What is the origin insertion and action of the sternocleidomastoid?
The SCM’s origins are
the sternum and clavicle and its insertion is the mastoid process behind the ear
. The actions of the SCM are to flex and rotate the head. It does this by contracting both SCMs together or one alone, respectively.
Where does the sternocleidomastoid muscle insert 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
.
What is the action 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).
Flexes neck ; rotates head
.
What part of the body does the Sternocleidomastoid move?
| Sternocleidomastoid | FMA 13407 | Anatomical terms of muscle |
|---|
How do I strengthen my Sternocleidomastoid?
- Sit on chair.
- Hold chair with right hand and use left hand to support head.
- Bend neck forward, side bend to left, and turn head to right.
- Lean body to left and slightly forward.
- Hold and repeat.
- Repeat stretch on other side.
How do you relieve Sternocleidomastoid pain?
Pain management:
Rest, ice, heat, and nonsteroidal anti-inflammatory drugs
may help reduce pain. Some people find that alternating heat and ice is helpful. Physical therapy: Physical therapy can help a person regain strength in the neck and head. It can also help prevent chronic injuries.
Why is the Sternocleidomastoid important?
The SCM muscle helps turn and bend your 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.
How do you assess Sternocleidomastoid?
Test the right sternocleidomastoid muscle by
facing the patient and placing your right palm laterally on the patient’s left cheek
. Ask the patient to turn the head to the left, resisting the pressure you are exerting in the opposite direction.
What joint does the Sternocleidomastoid cross?
A bilateral contraction elevates the head by dorsally extending the
upper cervical joints
.At the same time, it flexes the lower cervical column causing an overall bending of the neck towards the chest.
What is the major factor controlling how levers work?
Explanation: Lever is the simple machine that has ability to rotate on its own in accordance with point.It is based on the working that is carried out by the
different position load,force and fulcrum factors
. These factors decide the movement and location the lever tends to move and work.
What is the prime mover for chewing?
The masseter muscle
is the prime mover muscle for chewing because it elevates the mandible (lower jaw) to close the mouth, and it is assisted by the temporalis muscle, which retracts the mandible.
What is the action of the temporalis muscle?
The temporalis muscle is one of the muscles of mastication. It is responsible for
both closing the mouth and retraction (posterior fibers)
.
Can sternocleidomastoid muscle cause jaw pain?
Sternocleidomastoid (scm) muscle pain typically brings complaints of dizziness or sudden hearing loss,
headache or jaw pain
, even when everything appears to be normal.
What muscles are used to turn your head to the right?
Muscles That Move 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.
