Muscle Actions- Spine

Question 1

Cervical Intervertebral Joints- Flexion

Answer 1

• Sternocleidomastoid
• Longus colli
• Scalenus muscles

Question 2

Cervical Intervertebral Joints- Extension

Answer 2

• Semispinalis cervicis
• Splenius cervicis
• Iliocostalis cervicis
• Longissimus cervicis
• Multifidus
• Trapezius

Question 3

Cervical Intervertebral Joints- Rotation & Lateral Bending

Answer 3

• Sternocleidomastoid
• Scalenus muscles
• Splenius cervicis
• Iliocostalis cervicis
• Longissimus cervicis
• Multifidus
• Levator scapulae

Question 4

Thoracic & Lumbar Intervertebral Joints- Flexion

Answer 4

• Rectus abdominis
• Internal oblique
• External oblique

Question 5

Thoracic & Lumbar Intervertebral Joints- Extension

Answer 5

• Erector spinae
• Quadratus lumborum
• Multifidus

Question 6

Thoracic & Lumbar Intervertebral Joints- Rotation & Lateral Bending

Answer 6

• Rotatores
• Psoas major
• Quadratus lumborum
• Multifidus
• Internal oblique
• External oblique
• Iliocostalis thoracis
• Longissimus thoracis