Chapter 13 Corrected Flashcards
(29 cards)
Found at the foramen magnum of the skull, the spinal meninges are continuous with these,, which surround the brain.
cranial meninges
A series of specialized membranes surrounding the spinal cord, provide the necessary physical stability and show absorption.
spinal meninges
The outermost component of the cranial and spinal meninges.
dura mater
The space between the spinal dura mater and the walls of the vertebral foramen; contains blood vessels and adipose tissue; a common site of injection for regional anesthesia.
epidural space
Fluid bathing the internal and external surfaces of the central nervous system; secreted by the choroid plexus.
cerebrospinal fluid
The innermost layer of the meninges bound to the underlying neural tissue.
pia mater
A dense layer of collagen fibers that surrounds a peripheral nerve.
epineurium
The middle layer, its fibers extend inward from the epineurium.
perineurium
A delicate network of connective tissue fibers that surrounds individual nerve fibers.
endoneurium
A bundle of postganglionic sympathetic nerve fibers that are distributed to effectors in the body wall, skin, and limbs by way of a spinal nerve.
gray ramus
A nerve bundle containing the myelinated preganglionic axons of sympathetic motor neurons en route to the sympathetic chain or to a collateral ganglion.
white ramus
A complex interwoven network of nerves.
nerve plexus
Functional groups of interconnected neurons.
neuronal pool
Result from the connections that form between neurons during development; generally appear in a predictable sequence.
innate reflexes
Complex, learned motor patterns. They are rapid and automatic, but are also learned rather than preestablished.
acquired reflexes
Provide a mechanism for the involuntary control of the muscular system.
somatic reflexes
Also known as autonomic reflexes, control the activities of other systems.
visceral reflexes
An enhancement of spinal reflexes. Happens when many of the excitatory synapses are chronically active, and the postsynaptic neuron enters a state of generalized facilitation.
reinforcement
A spinal reflex in infants, consisting of a fanning of the toes in response to stroking the sole of the foot; in adults, a _______ sign indicates CNS injury.
Babinski sign
The injection of anesthetic into the epidural space to eliminate sensory and motor innervation via spinal nerves in the area of injection.
epidural block
An inflammation of the meninges involving either the spinal cord or the brain; generally caused by bacterial or viral pathogens.
meningitis
Regional losses of sensory and motor function as a result of nerve trauma, disease, or compression.
nerve palsies
Paralysis involving a loss of motor control of the lower, but not eh upper, limbs.
paraplegia
A stretch reflex resulting from the stimulation of stretch receptors in the quadriceps muscles.
patellar reflex
