Prevertebral Muscles

Question 1

Longus colli

Answer 1

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

Question 2

Longus capitis

Answer 2

O: anterior tubercules of C3-C6
I: basilar part of occipital bone
A: flexes head
I: C2-C3

Question 3

Rectus capitis anterior

Answer 3

O: lateral mass of atlas
I: base of occipital bone anterior to occipital condyle
A: flexes head
I: atlas and axis

Question 4

Rectus capitis lateralis

Answer 4

O: transverse process of atlas
I: jugular process of occipital bone
A: flexes and stabilizes the head
I: atlas and axis

Question 5

Posterior scalene

Answer 5

O: posterior tubercle of transverse C4-C6
I: second rib
A: flexes the neck laterally; elevates the second rib
I: C5-C8

Question 6

Middle scalene

Answer 6

O: posterior tubercles of transverse processes of C2-C7
I: first rib
A: flexes neck laterally; elevates first rib
I: C3-C7

Question 7

Anterior scalene

Answer 7

O: anterior tubercles of transverse processes of C3-C6
I: first rib
A: flexes neck laterally and elevates first rib
I: C5-C8