Anatomy: Erector Spinae Flashcards
The 3 Muscles that Attach to the Mastoid Process
- Longissimus
- Splenius Capitis
- Sternocleidomastoid
Spinalis Origin
- Thoracolumbar Aponeurosis
- SPs of Upper Lumbar and Lower Thoracic Vertebrae
- Ligamentum Nuchae
Spinalis Insertion
- Ascending SPs (except C1)
Spinalis Bilateral Action
- Extends Head and Spine
Spinalis Unilateral Action
- Ipsilateral Lateral Flexion of Neck and Trunk
Spinalis Characteristics
- Non Ropy
- Deep
Longissiums Origin
- Thoracolumbar Aponeurosis
- Thoracic TVPs
Longissimus Insertion
- Ascending TVPs
- Mastoid Process
Longissimus Bilateral Action
Extends Head and Spine
Longissimus Unilateral Action
- Ipsilateral Lateral Flexion of Neck and Trunk
- Ipsilateral Rotation of Head and Neck
Longissimus Characteristics
- Non Ropy
- Deep
Iliocostalis Origin
- Thoracolumbar Aponeurosis
- Illiac Crest
Iliocostalis Insertion
- Ascending Rib to Rib
- Lower Cervical TVPS
Iliocostalis Bilateral Action
- Extends the Spine
Iliocostalis Unilateral Action
- Ipsilateral Lateral Flexion of Neck and Trunk
- Ipsilateral Rotation of Neck
Iliocostalis Characteristics
- Non Ropy
- Deep
Splenius Capitis Origin
- Interior 1/2 of Ligamentum Nuchae
- SPs C7 to T4
Splenius Capitis Insertion
- Lateral Nuchal Line
- Mastoid Process
Splenius Capitis Bilateral Action
Extends Head and Neck
Splenius Capitis Unilateral Action
- Ipsilateral Rotation of Head and Neck
Splenius Capitis Characteristics
- Non Ropy
- Deep and Superficial
Splenius Cervicis
SPs of T3 to T6
Splenius Cervicis Insertion
TVPs of C1 to C3
Splenius Cervicis Bilateral Action
Extends Neck
Splenius Cervicis Unilateral Actions
- Ipsilateral Neck Rotation
- Ipsilateral Lateral Neck Flexion
Splenius Cervicis Characteristics
- Non Ropy
- Deep
Splenius Capitis Palpation
- Prone
- Slide through the upper fibers of the trapezius from just lateral the lateral edge of the trapezius to the mastoid process
