intermediate muscles MA

Question 1

Splenius Capitis and Cervicis-

Answer 1

acting unilaterally : laterally flexes the neck and rotates the head to side of active muscles

bilaterally: extend the head and neck

Question 2

Erector Spinae Group

Answer 2

UNILATERALLY:
Laterally flex the vertebral column to the SAME side

BILATERALLY:
Extend the vertebral column

Question 3

Rotatores (brevis and longus)

Answer 3

UNILATERALLY:
Rotate the vertebral column to the opposite side

BILATERALLY:

Extend the vertebral column locally
May function as organs of proprioception

Question 4

Multifidi

Answer 4

UNILATERALLY:

Rotate the vertebral column to the opposite side

BILATERALLY:

Extend the vertebral column
Stabilizes vertebrae during local movements of vertebral column

Question 5

Semispinalis Capitis

Answer 5

Extends the head, neck, and thoracic spine
Rotates them contralaterally (opposite sides)