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A. Axillary Nerve

*Goes into the armpit

SF: Lateral Shoulder

Axillary Nerve

A. Axillary Nerve

*Goes into the armpit

SF: Lateral Shoulder

A. Axillary Nerve
B. Radial Nerve
C. Musculocutaneous Nerve
D. Ulnar Nerve
E. Median Nerve

A. Axillary Nerve
B. Radial Nerve
C. Musculocutaneous Nerve
D. Median Nerve
E. Ulnar Nerve
F. Spinal Root C5
G. Spinal Root C6
H. Spinal Root C7
I. Spinal Root C8
J. Spinal Root T1

A. Axillary Nerve
B. Radial Nerve
C. Musculocutaneous Nerve
D. Median Nerve
E. Ulnar Nerve

Common Fibular Nerve

A. Common Fibular Nerve
B. Deep Fibular Nerve
C. Superficial Fibular Nerve

SF: Lateral side of the knee, lateral knee, anteriolateral leg, dorsum of the foot

A. Dorsal Ramus

*Contain axons that supply the skin near the midline of the back and deep muscles responsible for movement of the vertebral column (erector spinae muscles ILS)

A. Dorsal Root Ganglion

*The cell bodies of sensory neurons (the axons of which enter the spinal cord via the dorsal root and go to the dorsal horn)

A. Dorsal Root

*Contains axons of sensory neurons (the cell bodies of which are in the dorsal root ganglion)
-These neurons are unipolar

Femoral Nerve

A. Femoral Nerve

SF: Anterior thigh and medial leg

A. Dorsal Root
B. Dorsal Root Ganglion
C. Spinal Nerve
D. Dorsal Ramus
E. Ventral Ramus
(This is where the spinal nerve turns into the intercostal nerve)
F. Ventral Root

SF: Skin of the thorax
MF: Intercostal muscles

A. Obturator Nerve
B. Femoral Nerve
C. Common Fibular Nerve
D. Tibial Nerve

A. Median Nerve

*Middle nerve of the main "M"

SF: Thumb, index finger, middle finger, lateral portion of ring finger, lateral 2/3 of the palm

A. Median Nerve

*Middle nerve of the main "M"

SF: Thumb, index finger, middle finger, lateral portion of ring finger, lateral 2/3 of the palm

Median Nerve

Median Nerve

A. Musculocutaneous Nerve

*First to disappear into a muscle from the main "M"

SF: Lateral Forearm

A. Musculocutaneous Nerve

*First to disappear into a muscle from the main "M"

SF: Lateral Forearm

Musculocutaneous Nerve

Musculocutaneous Nerve

A. Interneuron
-The sensory neuron synapses with the interneuron
-The interneuron then synapses with the motor neuron

B. Somatic Motor neuron
-The cell body is located in the anterior horn
-The axon leaves via the ventral root

C. Autonomic Neuron
-The cell body is located in the lateral horn
-The axon leaves via the ventral root

D. Sensory neuron
-Unipolar
-The axon enters via the dorsal root
-The cell body is located in the dorsal root ganglion
-The axon ends at the posterior horn, where it synapses with the interneuron

Obturator Nerve

A. Obturator nerve

*Seen on anterior view, is very small

SF: medial thigh (groin)

A. Radial Nerve

SF: Posterior arm, posterior forearm, posteriolateral hand

A. Radial Nerve

SF: Posterior arm, posterior forearm, posteriolateral hand

A. Radial Nerve

SF: Posterior arm, posterior forearm, posteriolateral hand

Radial Nerve

A. Dorsal Root
B. Dorsal Root Ganglion
C. Dorsal Ramus
D. Ventral Ramus
E. Spinal Nerve
F. Ventral Root

A. Spinal Nerve

*Spinal nerves give rise to peripheral nerves

A. Cervical Nerves
B. Thoracic Nerves
C. Lumbar Nerves
D. Cervical Plexus (C1-C4)
E. Brachial Plexus (C5-T1)
F. Lumbosacral Plexus (L1-S4)
G. Lumbar Plexus (L1-L4)
H. Sacral Plexus (L4-S4)

Tibial Nerve

A. Tibial Nerve

*Part of sciatic nerve
*Visible in the medial hamstring

SF: Popliteal (back of knee) down to ankle, posterior leg, lateral foot, sole of the foot

A. Ulnar Nerve

*Most medial of the main "M"
*"funny bone"

SF: Medial portion of ring finger, little finger, medial 1/3 of the palm

A. Ulnar Nerve

*Most medial of the main "M"
*"funny bone"

SF: Medial portion of ring finger, little finger, medial 1/3 of the palm

Ulnar Nerve

Ulnar Nerve

A. Ventral Ramus

*In the thoracic region, the ventral rami form the intercostal nerves

*The other ventral rami form 5 major plexuses
-Plexuses contain axons that supply muscles and skin of the upper and lower extremities

A. Ventral Root

*Contains the axons of motor neurons
-Skeletal muscle from the anterior horn
-Cardiac and smooth muscle from the lateral horn

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