Muscles Of The Neck Flashcards
Which muscle is responsible for cervical flexion and contralateral rotation?
Sternocleidomastoid (SCM)
What is the primary function of the longus colli muscle?
Cervical flexion and stabilization
Which muscles form the suboccipital triangle?
Rectus capitis posterior major, Obliquus capitis superior, Obliquus capitis inferior
What is the insertion of the sternocleidomastoid?
Mastoid process of the temporal bone
Which cervical muscle elevates the scapula and assists in ipsilateral lateral flexion?
Levator scapulae
What nerve innervates the sternocleidomastoid?
Spinal accessory nerve (CN XI)
Which muscle is the primary extensor of the cervical spine?
Splenius capitis
Where do the scalene muscles insert?
First (anterior and middle) and second (posterior) ribs
Which muscle is primarily responsible for ipsilateral cervical rotation?
Obliquus capitis inferior
What is the function of the rectus capitis posterior major?
Extension and ipsilateral rotation of the head
Which deep cervical flexor assists with head stabilization?
Longus capitis
Which cervical muscle assists with forced inspiration?
Scalene muscles
What is the main action of the splenius capitis?
Cervical extension and ipsilateral rotation
Which muscles are part of the intrinsic deep back muscles in the cervical spine?
Semispinalis capitis, Semispinalis cervicis, Multifidus, Rotatores
What is the origin of the levator scapulae?
Transverse processes of C1-C4
Which nerve innervates the scalene muscles?
Cervical spinal nerves (C3-C8)
Which cervical muscle is responsible for tilting the head laterally and extending the neck?
Obliquus capitis superior
What is the insertion of the semispinalis capitis?
Occipital bone between the superior and inferior nuchal lines
Which muscle group assists in stabilizing the cervical spine?
Deep neck flexors (longus colli and longus capitis)
Which cervical muscle inserts on the second rib?
Posterior scalene
