Anatomy: Erector Spinae

Question 1

The 3 Muscles that Attach to the Mastoid Process

Answer 1

• Longissimus
• Splenius Capitis
• Sternocleidomastoid

Question 2

Spinalis Origin

Answer 2

• Thoracolumbar Aponeurosis
• SPs of Upper Lumbar and Lower Thoracic Vertebrae
• Ligamentum Nuchae

Question 3

Spinalis Insertion

Answer 3

• Ascending SPs (except C1)

Question 4

Spinalis Bilateral Action

Answer 4

• Extends Head and Spine

Question 5

Spinalis Unilateral Action

Answer 5

• Ipsilateral Lateral Flexion of Neck and Trunk

Question 6

Spinalis Characteristics

Answer 6

• Non Ropy
• Deep

Question 7

Longissiums Origin

Answer 7

• Thoracolumbar Aponeurosis
• Thoracic TVPs

Question 8

Longissimus Insertion

Answer 8

• Ascending TVPs
• Mastoid Process

Question 9

Longissimus Bilateral Action

Answer 9

Extends Head and Spine

Question 10

Longissimus Unilateral Action

Answer 10

• Ipsilateral Lateral Flexion of Neck and Trunk
• Ipsilateral Rotation of Head and Neck

Question 11

Longissimus Characteristics

Answer 11

• Non Ropy
• Deep

Question 12

Iliocostalis Origin

Answer 12

• Thoracolumbar Aponeurosis
• Illiac Crest

Question 13

Iliocostalis Insertion

Answer 13

• Ascending Rib to Rib
• Lower Cervical TVPS

Question 14

Iliocostalis Bilateral Action

Answer 14

• Extends the Spine

Question 15

Iliocostalis Unilateral Action

Answer 15

• Ipsilateral Lateral Flexion of Neck and Trunk
• Ipsilateral Rotation of Neck

Question 16

Iliocostalis Characteristics

Answer 16

• Non Ropy
• Deep

Question 17

Splenius Capitis Origin

Answer 17

• Interior 1/2 of Ligamentum Nuchae
• SPs C7 to T4

Question 18

Splenius Capitis Insertion

Answer 18

• Lateral Nuchal Line
• Mastoid Process

Question 19

Splenius Capitis Bilateral Action

Answer 19

Extends Head and Neck

Question 20

Splenius Capitis Unilateral Action

Answer 20

• Ipsilateral Rotation of Head and Neck

Question 21

Splenius Capitis Characteristics

Answer 21

• Non Ropy
• Deep and Superficial

Question 22

Splenius Cervicis

Answer 22

SPs of T3 to T6

Question 23

Splenius Cervicis Insertion

Answer 23

TVPs of C1 to C3

Question 24

Splenius Cervicis Bilateral Action

Answer 24

Extends Neck

Question 25

Splenius Cervicis Unilateral Actions

Answer 25

• Ipsilateral Neck Rotation
• Ipsilateral Lateral Neck Flexion

Question 26

Splenius Cervicis Characteristics

Answer 26

• Non Ropy
• Deep

Question 27

Splenius Capitis Palpation

Answer 27

• Prone
• Slide through the upper fibers of the trapezius from just lateral the lateral edge of the trapezius to the mastoid process