Transverse Adominis

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• Deepest layer of the adominal wall
• Fibers run horizontally
• "clinches waiste"-belly button to spine
• COMPRESSION
• Works activate crunches/contraction

Inguinal ligament. Iliac crest, thoraculumbar fascia, inner surfaces of ribes 7-12, aponeurosis/linea alba

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• Compression of Abdomen
• Assist in flexion
• Lateral Flexor
• Contralateral rotation

Inguinal ligament, thoraculmbar fascia, iliac crest, lower ribs/costal cartilage

• Compression of the abdomen
• Assist in Flexion
• Lateral Flexor
• Ipsilateral Flexion

Inguinal ligament, thoraculmbar fascia, iliac crest, lower ribs/costal cartilage, Aponereurosis to midline in front

Quadratus Lumborum

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• -Lateral Stabilizer of the spine during flexion of the spine and legs
• Bilateral contraction will extend the lumbar vertebrae to stabilize front leg extensions
• Unilateral contraction=Side port de bras and hip isolations

Posterior iliac crest. RIB 12. Tranverse processes of lumbar spine.

Rectus Abdominus

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• First layer of the abdominal muscles
•  Most medial
• Fibers run vertically
• 6th pack definition
• unilaterateral participation in lateral flexion

Pubic crest to xiphoid process and costal cortilage (ribs 5-7)

Pyramidalis

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Iliopsoas(Iliacus and Psoas)

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• The Deep Hip/Spine Flexor
• Iliacus does NOT attach to the spine
• Psoas do Attatch to the spine
• Prevents over working of the quads

Iliacus: Iliac fossa to the less trochanter of the femur

Psoas: Lumbar spine to less trochanter of the femur

Semispinalis

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• Fibers run Diagonally
• Bridges larger groups/segments at a time
• Cervical and Thoracic Regions

Transverse processes to Spinous process on vertebrae located above (Mid thorax to posterior skull)

Multifidus

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• Fibers run diagonally
• Bridgess 2-3-4 segments at a time
• Cervical, Thoracic, and Lumbar regions

Transverse processes to spinous process on vertebra located above

(Sacrum to C2)

Rotatores

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• Ribers run Diagonally
• Bridges 1-2 Segments at a time
• Thoracic Region only

Tranverse processes to Spinous Process on vertebrae located above

(T1-T12)

Erector Spinae Group

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Very Toned!

-Spinalis

-Longisimus

-Iliocastalis

Spinalis

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• Most Medial
• Fibers run Veritcally
• Unilatreally in cervical region will contrubute to lateral flexion and rotation
• Bilaterally they will extend spine and can hel lengthen the cervical region of the neck

Spinous processes (cervical/thoracic only)

Longissimus

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• The middle middle muscle
• Fibers run vertically
• Aponeurosis attacment at the sacral spine

Tranverse processes and bodies of the vertebrae (Base of skull to lumbar spine)

Iliocastalis

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• Most Lateral
• Fivers run Vertically
• Aponeurosis attachment at sacral spine

Iliac crest/lumbar fascia to posterior aspects of ribs, tranverse processes of lower cervical vertebrae

(low cervical to lumbar spine)

Scalenes

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• Anterior
• Middle
• Posterior

Anterior Scalene

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• Lateral Flexion
• Flexion and contralateral rotation

Cervical transverse processes to Rib 1

Middle Scalene

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• Lateral Flexion

Cervical transverse processes to Rib 1

Posterior Scalene

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• Lateral Flexion
• Flexion and contralateral rotation

Cervical transverse processes to Rib 2

Sternocleidomatstroid

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• The "chicken neck chord"
• Flexion plus lateral flexion and contralateral rotation

Mastoid process of skull to medial clavical of sternum

Splenius Capitis

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Splenius Cervicis

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Spleni

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• Does the turtle neck
• More superficial Layer

The Ribs

How many True, False, and Floating?

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12 Ribs

7 True

3 False

2 Floating

Sternum

Three parts

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• Manubrium
• Body
• Xyphoid Process