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BMS 208 Exam 3
Nerves and Nerve Structure
19
Anatomy
Undergraduate 2
03/09/2009

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Term
Epineurium
Definition
Outer most "protective layer" of the peripheral nerve.
Term
Perineurium
Definition
Enclosure of one fascicle.
Term
Endoneurium
Definition
encloses the myelin sheath of an axon.
Term
Somatic Motor Fibers
Definition
(Efferent) From the CNS to the skeletal muscle. provides reflex and voluntary control of the muscles.
Term
Visceral Motor Fibers
Definition
Efferent. From the CNS to the smooth muscle.Provides the involuntary control of the viscera.
Term
Dermatomes
Definition
Specific region of the skin surface monitored by a single pair of spinal nerves.
Term
T4
Definition
Nipple level
Term
T10
Definition
Umbilicus
Term
Radial Nerve
Definition
Innervates all posterior muscles of the arm.
Term
Musculocutaneous nerve
Definition
Innervates the anterior muscles Proximal to the elbow. (Biceps and Deltoids)
Term
Ulnar and Median Nerves
Definition
Innervate all anterior muscles Distal to the elbow. (Forearm)
Term
Obturator Nerve
Definition
Innervates all medial/adductor muscles of the thigh
Term
Femoral Nerve
Definition
Innervates all anterior muscles proximal to the knee. (Knee extendors, like the Quadracepts)
Term
Sciatic Nerve
Definition
Composed of two nerves:
Tibial Nerve and the Common Peroneal
Term
Tibial Nerve
Definition
Innervates all posterior muscles.
Term
Common Fibular (peroneal) nerve
Definition
Innervates all anterior muscles lateral and distal to the knee.
Term
Reflex
Definition
Automatic response to a stimulus
Term
Posterior Horn
Definition
Sensory Afferent.
Term
Anterior Horn
Definition
Motor Efferent. Activates motor Neuron
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