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Resp / Spine Muscles

Muscles of Respiration and Muscles of the Spine

What is the Diaphragm? Floor of the thorax - primary muscle of respiration - elevates lower ribs increasing width of rib cage and elevates upper ribs increasing depth of rib cage.
What are the Intercostals? Muscles between adjacent ribs which contract during deep forced respiration. Help maintain the correct shape of the rib cage.
What is the Scalenae? Active during quiet respiration. Insert proximally on transverse processes of lower five cervical vertebrae and distally on upper surface of primary two ribs. Lift sternum and primary two ribs in "pump handle" like action
What is Levator Costarum? Assists in the rotation of the spine and elevation of the ribs. Runs from thoracic vertebrae to the back of a rib one or two notches below.
What is Transversus Abdominus? Deepest of four abdominal muscles which reduces diameter of abdomen, increases lordosis of the lumbar spine, supports the internal organs and acts as a stabilizer with side bending. This muscle exhibits a pre-anticipatory contraction in health.
What is Pelivc Floor? The Ischiococcygeus and the Pubococcygeus AKA - the "Kegel Muscles"
What is Erector Spinae? Three divisions (Iliocostalis - Lateral, Longissimus Middle, Spinalis - Medial) running all the way from head to bottom of the rib cage producing extension, side-bend and rotation.
What is Quadratus Lumborum? Runs from back of iliac crest to the bottom rib and the spinal processes along the way, side-bending of lumbar spine, elevation of pelvis.
What is Multifidi? Multisegmental deep spinal muscle, completing the "corset" begun by the transverses adbominus.
What is Trapezius? Runs from occiput through T12 to the superior scapula and Clavicle producing extension, side-bend, rotation of the neck.
What is Rhomboids? Run from the back of C7 through T5 to the medial scapula, lateral shift of vertebrae, side-bend or rotation of the neck.
What is Rectus Abdominus? crest of pubic symphysis to xyphoid process and cartilage of ribs 5 - 7. Function includes compression of abdomen and spinal flexion.
What are External Obliques? Front of ribs 5 - 12 to linea alba and inguinal ligament. Produces flexion, compression of abdomen, unilateral side-bend and contralateral rotation.
What are Internal Obliques? Iliac crest, inguinal ligament, thoracolumbar fascia to lower ribs. Produces compression of abdomen, flexion, ipsilateral side-bend, rotation.
What are Transversus abdominus? Deepest of four, compression of abdomen, increase lumbar lordosis, stabilizes spine and pelvis before movement.
Created by: Nlockhart
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