muscles of the neck Flashcards
(10 cards)
what is this muscle? Origin? Insertion? Action?
sternocleidomastoid
origin: sternum and clavicle
insertion: temporal bone
action: flexes neck + rotates head
what is this muscle? Origin? Insertion? Action?
scalenes
1 - anterior, 2 - middle, 3 - posterior
origin - cervical vertebrae
insertion - ribs
action - elevates ribs and flexes neck
what is this muscle? Origin? Insertion? Action?
levator scapulae
origin: cervical vertebrae
insertion: scapula
action: elevates and adducts scapula
what is this muscle? Origin? Insertion? Action?
trapezius
origin: external occipital protuberance + cervical/thoracic vertebrae
insertion: acromion + scapular spine
action: elevates, rotate, and adducts scapula + raises neck
what is this muscle? Origin? Insertion? Action?
latissimus dorsi
origin: thoracic/lumber vertebrae, ribs, iliac crest
insertion: humerus
action: extend, abduct, and medially rotate arm
what is this muscle? Origin? Insertion? Action?
rhomboid minor
origin: thoracic/cervical vertebrae
insertion: scapula
action: retract and stabilize scapula
what is this muscle? Origin? Insertion? Action?
latissimus dorsi
origin: thoracic/lumber vertebrae, ribs, iliac crest
insertion: humerus
action: extend, abduct, and medially rotate arm
what is this muscle? Origin? Insertion? Action?
rhomboid major
origin: thoracic vertebrae
insertion: scapula action
action: retract and stabilize scapula
what is this muscle? Origin? Insertion? Action?
serratus anterior
origin: lateral surface of ribs
insertion: scapula
action: protract scapula
what is this muscle? Origin? Insertion? Action?
erector spinae
(spinalis, longissimus, iliospinalis)
Origin: Thoracic/lumbar vertebrae + ribs
Insertion: occipital bone + mastoid process
action: extend neck and vertebral column (putting our hands up over our head)
