provide a supportive, protective cushion to brain and spinal cord. a reservoir of circulating fluid that, along with blood, the brain monitors for changes in the internal environment.

posterior nerve root, carry sensory information into the spinal cord.

anterior nerve root, carry motor information out of the spinal cord.

On each side of the spinal cord, the dorsal and ventral nerve roots join together to form a single mixed nerve.

Ventral rami of the first four cervical spinal nerves (C1 through C4), along with a branch of the ventral ramus of C5, exchange fibers in the cervical plexus.

spinal nerve plexus which is formed by the intermingling of fibers from the first four lumbar nerves .

passes from the ventral rami of spinal nerves C5 through T1, beneath the clavicle (collarbone), and toward the arm.

Fibers from the fourth and fifth lumbar nerves (L4 and L5) and the first four sacral nerves (S1 through S4)

enteric nervous system (ENS)

special part of the ANS, “intestinal nervous system” that is made up of a complex network of nerve plexuses buried between layers of the intestinal (gut) wall. ENS controls visceral effectors gut wall, endocrine cells, exocrine cells, smooth muscles.

conduct impulses from the brainstem or spinal cord to an autonomic ganglion, locating them before the ganglion—thus preganglionic

postganglionic neuron

second neuron conducts impulses away from the ganglion and to the effector.

Sympathetic axon collaterals bridge the gap between adjacent ganglia that lie on the same side of the vertebral column.

Preganglionic neurons that pass through chain ganglia without synapsing continue on through splanchnic nerves to other sympathetic ganglia

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sara douglass

221-wk 7-13

Question	Answer
cerebrospinal fluid	provide a supportive, protective cushion to brain and spinal cord. a reservoir of circulating fluid that, along with blood, the brain monitors for changes in the internal environment.
dorsal nerve root	posterior nerve root, carry sensory information into the spinal cord.
ventral nerve root	anterior nerve root, carry motor information out of the spinal cord.
spinal nerve	On each side of the spinal cord, the dorsal and ventral nerve roots join together to form a single mixed nerve.
cervical plexus	Ventral rami of the first four cervical spinal nerves (C1 through C4), along with a branch of the ventral ramus of C5, exchange fibers in the cervical plexus.
lumbar plexus	spinal nerve plexus which is formed by the intermingling of fibers from the first four lumbar nerves .
brachial plexus	passes from the ventral rami of spinal nerves C5 through T1, beneath the clavicle (collarbone), and toward the arm.
sacral plexus	Fibers from the fourth and fifth lumbar nerves (L4 and L5) and the first four sacral nerves (S1 through S4)
enteric nervous system (ENS)	special part of the ANS, “intestinal nervous system” that is made up of a complex network of nerve plexuses buried between layers of the intestinal (gut) wall. ENS controls visceral effectors gut wall, endocrine cells, exocrine cells, smooth muscles.
preganglionic neuron	conduct impulses from the brainstem or spinal cord to an autonomic ganglion, locating them before the ganglion—thus preganglionic
postganglionic neuron	second neuron conducts impulses away from the ganglion and to the effector.
sympathetic trunk	Sympathetic axon collaterals bridge the gap between adjacent ganglia that lie on the same side of the vertebral column.
splanchnic nerves	Preganglionic neurons that pass through chain ganglia without synapsing continue on through splanchnic nerves to other sympathetic ganglia

Created by: user-1988304

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