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O: Along the ribs/costochondral junctions
I:Medial surface of the scapula
Inn: Long Thoracic Nerve
F: depresses scapula, supports the trunk and aids in inspiration
Serratus Ventralis (cervicis and thoracis)
Serratus Dorsalis (cranialis and caudalis)
O: Dorsal Midline
I: Surface of costae
Inn: Intercostal nerves
F: Aids in expiration (cranialis) and inspiration (caudalis)
Scalenus
O: Cranial border of the first rib
I: Transverse processes C-7 and C-6
Inn: Unnamed Ventral branches of the cervical and thoracic spinal nerves
F: Aids in inspiration
Longus Capitis
O:Transverse processes of cervical vertebrae
I: Muscular tubercle on the basioccipital bone of the skull
Inn: Unnamed ventral branches of cervical spinal nerves
F: Stabilization of the cervical vertebrae
Longus Colli
O: C1-T6 vertebral bodies or transverse processes
I: Atlas
Inn: Unnamed ventral branches of the cervical and thoracic spinal nerves
External Abdominal Oblique
O: Thoracolumbar fascia and last few ribs
I:Aponeurotic insertion on the linea alba and prepubic tendon
Inn: Unnamed branches of the thoracic and lumbar nerves
F: Twist and rotate the abdomen
Internal Abdominal Oblique
O: Thoracolumbar fascia, tuber coxae, and inguinal ligament
I: Aponeurosis on costal arch/rectus abdominis, linea alba, and prepubic tendon
Inn: Unnamed ventral branches of the thoracic and lumbar nerves
Transversus Abdominis
O: Medial surface of the last 4 or 5 ribs and transverse processes of the lumbar vertebrae
I: Aponeurotic attachment to the linea alba
Inn: Unnamed ventral branches of the lumbar spinal nerves
F: Supports the trunk
Rectus Abdominis
O: Pectin of the pubis
I: Sternum
F: Flexes the thoracolumbar part of the vertebral column
Rectus Thoracis
O: Aponeurosis with Rectus Abdominis and sternum
Inn: Unnamed ventral branches of thoracic spinal nerves
F: Flex the trunk and anchors the abs
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