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16 Cards in this Set

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Sternocleidomastoid: 2 heads (p. 244)

O: manubrium of sternum and medial 1/3rd of clavicle I: mastoid process A: bilateral: flexion of neck, head hyperextension unilateral: lateral flexion to same side; rotation to opposite side N: spinal accessory (C.N. XI); C-2, C-3

Scalenes: actually 3 - anterior, middle, posterior (p. 247)

O: transverse processes of cervical vertebrae (C2-C7) I: Anterior and Middle: first rib Posterior: second rib A: bilateral: assists in flexion of neck unilateral: lateral bending of head and neck to same side N: ant. rami of lower cervical nerves

Prevertebral Muscles: Longus colli, Longus capitis (p. 260)—do not need to learn the O’s & I’s for the individual muscles, just know as a group.

O: transverse processes or bodies of vertebrae I: bodies of vertebrae above or occipital bone A: flexion of neck and head; maintaining postural control N: cervical nerves

Suboccipital Muscles: Rectus Capitis Posterior Major, Rectus Capitis Posterior Minor, Oblique Capitis Superior; Oblique Capitis Inferior (p. 205)—do not need to learn the O’s & I’s for the individual muscles, just know as a group.

O: various parts of atlas and axis I: occipital bone A: extension of head on neck, lateral bending same side, rotation of AA and AO to same side. N: suboccipital nerve

Splenius Capitus: (p.203)

O: lower half of nuchal ligament; spinous processes of C-7 to T-4 I: lateral 1/3rd of superior nuchal line; mastoid process A: bilateral: extension of head and neck unilateral: rotation and lateral bend of head to same side N: middle and lower cervical nerves

Splenius Cervicis: (p. 203)

O: spinous processes of T-3 to T-6 I: transverse processes of C-1 to C-3 A: bilateral: extension of neck unilateral: rotation and laterally bend neck to same side N: middle and lower cervical nerves

Anterior Trunk Muscles Rectus Abdominis: (p. 210)

O: crest of pubis, pubic symphysis I: costal cartilages of ribs 5,6,7; xiphoid process A: trunk flexion; compression of abdomen (post. pelvic tilt in reversal of muscle action) N: intercostal nerves 7-12

External Oblique: fibers form a “V” ; (p. 210)

O: lateral sides of lower eight ribs (ribs 4-12) I: ant. iliac crest and linea alba A: bilateral: trunk flexion; compression of abdomen unilateral: lateral bending; rotation to opposite side N: intercostal nerves 7-12; iliohypogastric; ilioinguinal

Internal Oblique: fibers form inverted V “^” (p. 211)

O: lateral inguinal ligament, iliac crest, thoracolumbar fascia I: internal surface of lower 3 ribs (10,11,12); abdominal aponeurosis to linea alba A: bilateral: trunk flexion; abdominal compression unilateral: lateral bending; rotation to same side N: intercostal nerves 7-12; iliohypogastric; ilioinguinal

Transverse Abdominis: deepest of abdominal muscles (p. 211)

O: inguinal ligament, iliac crest, thoracolumbar fascia, cartilages of last six ribs I: abdominal aponeurosis and linea alba A: compression of abdomen N: intercostal nerves 7-12; iliohypogastric; ilioinguinal

Posterior Trunk Muscles Erector Spinae: (p. 189 & 197) medial - spinalis (spinous processes) intermediate - longissimus (transverse processes) lateral - iliocostalis (ilium and ribs)

O: spinous processes, transverse processes, thoracolumbar aponeurosis, and posterior ribs below (sacrum, ilium, lumbar, thoracic regions) I: spinous processes, transverse processes, posterior ribs above (upper thoracic, cervical, and occiput regions) A: bilateral: extension unilateral: lateral bending N: spinal nerves

Transversospinalis: (p. 200-201); deepest layer; oblique line semispinalis - 5+ vertebrae; multifidus - 2-4 vertebrae; rotatores - 1 vertebra

O: transverse processes I: spinous processes of vertebrae above A: bilateral: trunk extension unilateral: rotation to opposite side N: spinal nerves

Interspinalis Muscles: (p. 217); located in cervical and lumbar regions

O: spinous process below I: spinous process above A: trunk extension N: spinal nerves

Intertransversarii Muscles: (p.217); located in cervical and lumbar regions

O: transverse process below I: transverse process above A: trunk lateral bending; bilaterally, extend trunk N: spinal nerves

Midline Muscles of Trunk Quadratus Lumborum: (p. 207); deep muscle located in anterior-posterior midline

O: posterior iliac crest I: rib 12; transverse processes of L-1 to L-4 A: trunk lateral bending reverse: hip hiking (aka: lateral pelvic tilt or elevation) N: spinal nerves T-12, L-1 to L3

Iliopsoas: (p. 332)

O: transverse processes and lateral bodies of T12-L5, iliac fossa I: lesser trochanter of femur A: hip flexion, trunk flexion (lumbar hyperextension), anterior pelvic tilt N: femoral nerve