Prevertebral Muscles Flashcards
Longus colli
O: body of T1-T3 with attachments to C4-C7 and C3-C6
I: anterior tubercle of atlas and C4-C6, C2-C6
A: flexes cranial nerves and allows slight rotations
I: C2-C6
Longus capitis
O: anterior tubercules of C3-C6
I: basilar part of occipital bone
A: flexes head
I: C2-C3
Rectus capitis anterior
O: lateral mass of atlas
I: base of occipital bone anterior to occipital condyle
A: flexes head
I: atlas and axis
Rectus capitis lateralis
O: transverse process of atlas
I: jugular process of occipital bone
A: flexes and stabilizes the head
I: atlas and axis
Posterior scalene
O: posterior tubercle of transverse C4-C6
I: second rib
A: flexes the neck laterally; elevates the second rib
I: C5-C8
Middle scalene
O: posterior tubercles of transverse processes of C2-C7
I: first rib
A: flexes neck laterally; elevates first rib
I: C3-C7
Anterior scalene
O: anterior tubercles of transverse processes of C3-C6
I: first rib
A: flexes neck laterally and elevates first rib
I: C5-C8
