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20 Cards in this Set

  • Front
  • Back
Semispinalis Capitis
1. Inserts between the superior & inferior nuchal lines on the skull
Suboccipital Triangle:
1. Composition
1. Lateral Side: Obliques Capitis Superior
2. Medial Side: Rectus Capitis Posterior Major
3. Inferior Border: Obliques Capitis Inferior
Obliques Capitis Superior
1. Location
2. Function
1.From Transverse process C1 to occipital bone btwn inferior/superior nuchal lines
2. lateral rotation of atlas on the axis
Obliques Capitis Inferior
1. Location
2. Function
1. From Spinous process C2 to transverse process C1
2. Lateral rotation of atlas on the axis
Rectus Capitis Major
1. Location
2. Function
1. From Spinous process C2 to occipital bone below inferior nuchal line
2. Allow for extension posteriorly of the neck & head
Rectus Capitis Minor
1. Location
2. Function
1. Directly medial to Rectus Capitis Major muscle
2. Allow for extension posteriorly of the neck & head
What emerges through the suboccipital triangle?
1. Suboccipital Nerve = dorsal ramis of C1
2. Supplies the four muscles of the triangle with motor innervation
What is different about the dorsal ramus of C1?
NO SENSORY COMPONENT
Therefore, it has no dorsal root ganglion.
Greater Occipital Nerve
Emerges from below the oliques capitis inferior and passes superiorly through the suboccipital triangle and emerges onto the base of the skull
Lesser Occipital Nerve
Comes down laterally ?????
Erector Spinae
-Longitudinal Muscles that help maintain erectness
-Deep Muscles of the Back (3)
1. Spinalis
2. Longissimus
3. Iliocostalis
-All supplied by posterior intercostal artery?
Iliocostalis
1. Location
2. Attachment
3. Innervation
1. Most medial group
2. Attaches spinous process (attachments in lumbar, thoracic, & cervical regions)
3. Dorsal Rami of Spinal Nerves
Longissimus
1. Location
2. Attachment
3. Innervation
1. Intermediate group
2. Inferior attachment is sacrum; superior attachments are transverse proccesses of thoracic & cervical regions & capitis
Iliocostalis
1. Location
2. Attachment
3. Innervation
1. Most lateral group
2. Inferior attachment is the ilium; superior attachments are ribs
3. Dorsal Rami of Spinal Nerves
Transversospinalis
-Deepest muscles in the back
-Run from transverse processes to spine as a group
-Three parts
Semispinalis Capitis
Largest of the Transversospinalis group
1. Found just deep of the splenius capitis; fibers course vertically
2. Inserts into the occipital bone inferior to the superior nuchal line.
Rotatores
1. Attach from transverse processes to the spine
Multifidus
Deepest of the Transversospinalis group
1. Passes btwn individual veterbra
Thoracolumbar Nerve
Innervates the latissimus dorsi
Splenius Muscle
1. Lies deep to the trapezius muscle
2. Fibers course obliquely across the neck
3. Attaches to nuchal ligament & spinous processes C7-T6 and/or mastoid process or cervical vertebrae