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Chap 13 part 3

Across
Supplies motor innervation to the diaphragm(C3, C4, C5 keep you alive!) Cervical Plexus
Arm & forearm flexors (biceps brachii, brachialis, coracobrachialis)
(ventral) carries motor output out of spinal cord via motor axons -Rootlets leave spinal cord & converge to form anterior root
In thoracic region, it gives rise to intercostal nerve -In other regions, anterior rami form plexuses
Brain receives information about body position and movements from nerve endings in muscles, tendons, and joints
Organization of the Brachial Plexus Roots, Trunk, Division, Cold, Nerves/Branches
When the origin and destination of a tract are on the same side of the body; does not decussate
Shoulder(deltoid & teres minor, a rotator cuff muscle)
S4, S5, Co1
In the neck, C1 to C5 -Supplies neck & phrenic nerve to the diaphragm
Function-carry sensory signals from bones, joints, muscles, and skin
In the pelvis, L4, L5, S1 to S4 -Supplies remainder of lower trunk & lower limb
Down
Blood vessels _________ connective tissue coverings
Most of the wrist/hand flexor muscles
2 wrist/hand flexor muscles
All wrist/hand extensor muscles & triceps brachii
Anterior rami branch & merge repeatedly to form five __________
Musculocutaneous nerve, Axillary nerve, Radial nerve, Median nerve, & Ulnar nerve
In the lower back, L1 to L4 -Supplies abdominal wall, anterior thigh, genitalia
Near the shoulder, C5 to T1 -Supplies upper limb via 5 major nerves
Innervates the muscles & joints in its segment of the spine + the skin of the back
Primarily to stimulate skeletal muscle contraction
Beyond the vertebra, the nerve _________ into 2 branches