Anterior Neck Flashcards
Platysma Origin/Insertion
Skin of the anterior neck
Platsyma Action
Tightens skin of neck
Platysma Innervation
Facial (Cranial VII)
Sternocleidomastoid Origin
Mastoid and lateral superior nuchal line
Sternocleidomastoid Insertion
Manubrium and medial 1/3 clavicle
Sternocleidomastoid Action
Unilateral- tilts head to saem side and rotates face toward opposite side
Bilateral- flex head on the neck
with the head held stable, it can flex the neck
Sternocleidomastoid Innervation
Spinal Accessory and C2
Sternohyoid Attachments
Runs from posterior manubrium and medial clavicle to body of hyoid
Sternohyoid Innervation
Ansa Cervicalis (C1-C3)
Sternothyroid Attachments
Posterior manubium and 1st costal cartilage to thyroid cartilage
Sternothyriod Innervation
Ansa Cervicalis (C1-C3)
Thyrohyoid Attachments
Courses from thyroid cartilage to body and greater horn of hyoid bone
Thyrohoid Innervation
Ansa Cervicalis (C1-C3)
Omohyoid Attachments
Inferior- upper border of scapula, runs intermediate tendon
Superior- intermediate tendon to hyoid
Omohyoid Innervation
Ansa Cervicalis (C1-C3)
Longus Colli Origin
Anterior tubercles and transverse nprocesses of 3rd to 5th cervical vertebrae to the anterior arch of the atlas
Longus Colli Insertion
Bodies of first 2-3 thoracic vertebrae to anterior tubercles of 3rd-5th cervical vertebrae
Longus Colli Actions
Bilateral flexion of the neck
Unilateral lateral flexion and rotation to the ipsilateral side
Longus Colli Innervation
Branches of the cervical plexus
Longus Capitis Attachments
C3-C6 to base of skull
Longus Capitis Actions
Bilaterally flexes the head on the neck at the atlantooccipital joint
Unilateral rotation of the head on the neck to the ipsilateral side at the atlantoaxial joint
Longus Capitis Innervation
Branches of the cervical plexus
Rectus Capitis Anterior Attachments
From atlas to area anterior to occipital condyle
Rectus Capitis Anterior Actions
Stabilize skull on cervical vertebrae
Assist in flexion of the neck and of the head on the neck
Rectus Capitis Anterior Innervation
Branches of the cervical plexus
Rectus Capitis Lateralis Attachments
Transverse process of atlas to jugular process of occipital bone
Rectus Capitis Lateralis Actions
Stabilize skull on cervical vertebrae
Assist in flexion of the neck and of the head on the neck
Rectus Capitis Lateralis Innervation
Branches of the cervical plexus
Anterior Scalene Origin
Transverse process of C3-C6
Anterior Scalene Insertion
Common tendon onto the 1st rib
Middle Scalene Origin
Transverse process of C2-C6
Middle Scalene Insertion
Common tendon onto 1st rib posterior to Anterior Scalene
Posterior Scalene Origin
Transverse process of C6-C7
Posterior Scalene Insertion
Common tendon onto 2nd rib
Scalene Actions
Bilaterally elevate first rib during forced inspiration and with stable trunk, they flex the neck
Unilaterally lateral flexion to the ipsilateral side
Scalene Innervation
Segmentally via branches from cervical and brachial plexus