Muscles of the Neck Flashcards
/Digastric
A: Depress mandible and elevate hyoid bone
Levator scapulae
A: Elevates scapula and rotates scapula inferiorly
/Mylohyoid*
A: Elevates hyoid bone and elevates floor of mouth
O: Mandible
I: Hyoid bone
/Omohyoid*
A: Depress hyoid
O: Scapula
I: Hyoid bone
Scalenus anterior
A: flexes neck, elevates ribs during forced inspiration
Scalenus medius
A: flexes neck, elevates ribs during forced inspiration
Scalenus posterior
A: flexes neck, elevates ribs during forced inspiration
Splenius capitis
A: Extends neck (bilateral action); rotates head (unilateral action)
/Sternocleidomastoid (clavicular head)*
A: flexes neck (bilateral action); Lateral flexion and rotation of neck (unilateral action)
O: Clavicle
I: Mastoid process of temporal bone and occipital bone
/Sternocleidomastoid (sternal head)*
A: flexes neck (bilateral action); Lateral flexion and rotation of neck (unilateral action)
O: Manubrium of sternum
I: Mastoid process of temporal bone and occipital bone
/Sternohyoid*
A: Depresses hyoid bone
O: Manubrium of sternum and clavicle
I: Hyoid bone
Thyrohyoid
A: Depresses hyoid bone and elevates larynx
