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Neuron etc Anatomy

NPTE Neuromuscular

Meninges Dura mater, arachnoid, pia mater
Outer tough fibrous membrane Dura mater
Delicate middle vascular membrane Arachnoid
Thin vascular membrane on brain surface pia mater
Formed by arachnoid & pia, contains CSF and cisterns Subarachnoid space
Cavities filled with CSF that communicate with SC ventricles- lateral, third, fourth
Large irregularly shaped ventricle with horns, communicates with 3rd ventricle Lateral ventricles
Ventricle located posterior & deep between thalami Third ventricle
Communicates 3rd & 4th ventricle Cerebral aquaduct
Pyramid shaped, loced in pons and medulla 4th ventricle
Selective restriction of blood borne substances from entering CNS Blood brain barrier
Blood supply to brain carotid system, vertebrobasilar system, Circle of Willis
Venous drainage from brain cerebral veins and dural venous sinuses
Support cells that do not transmit signals neuroglia
Large myelinated fast conducting nerve fibers A fibers
A fibers for proprioception, somatic motor Alpha
A fibers for touch, pressure Beta
A fibers motor to muscle spindles Gamma
A fibers for pain, temp, touch Delta
Small, myelinated, conduct less rapidly, preganglionic autonomic B fibers
Smallest, unmyelinated, slowest conducting fibers C fibers
C fibers for pain, reflex responses Dorsal root
C fibers for postganglionic sympathetic Sympathetic
Ventral root of spinal nerves Motor fibers to voluntary muscles
Dorsal root of spinal nerves Sensory fibers from sensory receptors
SC ends at what level in adults L1
Anterior ramus of spinal nerves supply? muscles and skin of anterolateral body wall and limbs
Posterior ramus of spinal nerves supply? muscles and skin of back
Cervical plexus arises from C1 to C4 nerve roots
Brachial plexus arises from C5-T1
Lumbar plexus arises from T12-L4
Sacral plexus arises from L4-S3
Created by: Jenwithonen