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37 Cards in this Set

  • Front
  • Back
In the PNS, the cell bodies of neurons are concentrated in masses called __.
Ganglia
The fibrous sheath around a nerve is called the __.
Epineurium
All __ nerves are mixed nerves.
Spinal
Sensory signals to the spinal cord enter it by way of its __.
Posterior horn
__ is the crossing of nerve fibers from one side of the CNS to the other as they ascend from or descend to the brain or spinal cord.
Decussation
White matter in the spinal cord is divided into columns that contain __.
Tracts
The axillary, radial, and ulnar nerves arise from the __ plexus.
Brachial
The __ ramus of a spinal nerve innervates the muscles, joints, and skin of the back at that spinal nerve level.
Posterior
__ in the spinal cord contains heavily myelinated nerve fibers.
White matter
Most cerebrospinal fluid around the spinal cord is found in the __.
Subarachnoid space
The spinal cord ends in the __ at about the level of L1.
Conus Medullaris
Area of skin innervated by one spinal nerve
Dermatome
Nerve fibers that conduct signals from the CNS to a muscle or gland
Efferent
Contains the neurosomas of afferent somatosensory neurons
Posterior root ganglion
Carries pain information from tissue injury
Spinoreticular tract
T/F
Most nerves are sensory nerves.
False
T/F
Proprioceptors are sense organs that detect changes in position and movement of the body.
True
T/F
The origin and destination of a nerve tract are on the same side of the body.
False
T/F
Rabies is caused by a virus that affects the CNS.
True
T/F
Testing somatic reflexes can aid in diagnosing diabetes mellitus.
True
T/F
The spinothalamic tract is a descending motor pathway that controls fine movements of the limbs.
False
Spinal nerves form all of hte following plexuses except: cervical; brachial; thoracic; lumbar; coccygeal
Thoracic
A reflex arc always includes all of these except: a motor neuron; a receptor; the brain; an afferent neuron; an effector
The brain
Many nerves in the cauda equina innervate:
The lower extremities
All are functions of the spinal cord except:
conducts messages from the brain to effectors
locomotion
perception of sensations
carries information from sensors to the brain
it is a reflex center
Perception of sensations
Given the anatomy of the spinal cord, epidural injections should be given:
Between L2 and L4
The phrenic nerve, which innervates the diaphragm, is a branch of the __ plexus.
Cervical
There are __ pairs of spinal nerves.
31
Nerve pain associated with pressure on spinal nerves is:
Neuralgia
Ascending sensory pathways usually require __ neurons, while descending motor pathways typically require __ neurons.
Three; Two
Which of these is/are true about the brachial plexus?
1) it forms the long thoracic nerves.
2) its cords in the armpits can be subject to "crutch" paralysis
3) it includes roots, trunks, and anterior and posterior divisions.
4) it forms from posterior rami of C4-T2
1, 2, and 3
1) it forms the long thoracic nerves.
2) its cords in the armpits can be subject to "crutch" paralysis
3) it includes roots, trunks, and anterior and posterior divisions.
Term: -algia
Pain
Term: -tom
Segmant
Term: contra-
Opposite
Term: baro-
Pressure
Term: dura
Tough/Hard
Term: polio
Gray