4-6-07 - Ÿ Cervical Plexus Ÿ C1-C5 Ÿ Skin& muscle...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
-1Ch. 14 p. 396, 403-422 Ch. 15 p 430-443 Ch. 17 p. 484-493 Ch. 18 p. 500-513 Ch. 19 p. 524-551 Spinal Nerves Ÿ 31 pairs Ÿ 8 cervical Ÿ 12 thoracic Ÿ 5 lumbar Ÿ 5 sacral Ÿ 1 coccygeal Ÿ Mixed nerves Ÿ Dorsal (posterior) root: sensory (spinal ganglion) Ÿ Ventral (anterior) root: motor (axons) Ÿ Cell bodies housed within the ganglion Ÿ Dorsal + ventral root = spinal nerve Ÿ Divisions Ÿ Dorsal ramus: muscle, skin along vertebral column Ÿ Ventral ramus: muscles, skin on lateral and anterior portions. Some combine to innervate limbs. Ÿ Nerve Plexus Ÿ A network of nerves Ÿ Named after the area they innervate: cervical, brachial, lumbar, sacral
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Ÿ Cervical Plexus Ÿ C1-C5 Ÿ Skin & muscle: head, neck, shoulders Ÿ Phrenic nerve: diaphragm Ÿ Brachial Plexus Ÿ C5-T1 Ÿ Upper extremity Ÿ Major nerves Ÿ Axillary Ÿ Radial (Saturday night paralysis) Ÿ Musculocutaneous Ÿ Ulnar (funny bone) Ÿ Median Ÿ Lumbar Plexus Ÿ L1-L4 Ÿ Lower abdomen & anterior/medial leg Ÿ Femoral Ÿ Obturator Ÿ Sacral Plexus Ÿ L4-S4 Ÿ Low back, pelvis, posterior leg, & foot Ÿ Major nerves: Sciatic Ÿ Tibial Ÿ Peroneal Ÿ Dermatomes (know them)...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online