Nervous System Flashcards

1
Q

Consists of a cell body, dendrites and an axon

A

Neuron

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2
Q

a bundle of 100’s to 1000’s of axons often with associated connective tissue and blood vessels

A

Nerve

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3
Q

Outer layer, Covers the brain, brainstem, spinal cord, rootlets and spinal nerves

A

Dura matter (Dura=tough mother)

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4
Q

Middle layer, Loosely organized connective tissue with a spider web-like appearance

A

Arachnoid Matter

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5
Q

Intimately associated with nerves, spinal cord and brain. Thin, deepest/ innermost layer

A

Pia Matter (pia= soft mother

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6
Q

Originate from the anterior aspect of the cord
Carries outgoing motor information only
No associated ganglion

A

Anterior Roots

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7
Q

Originate from the posterior aspect of the cord
Carries incoming sensory information
Has Ganglion

A

Posterior Roots

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8
Q

a collection of nerve cell bodies located outside of the CNS

A

Ganglion

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9
Q

Anterior and Posterior roots come together to form… Travels through intervertebral foramina

A

Spinal Nerves

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10
Q

Innervate muscles and structures of the upper and lower limbs

Also innervate skin of the lateral and ventral (anterior) surfaces of trunk

A

Anterior Primary Rami (branch anteriorly)

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11
Q

Innervate deep muscles of the back

Also innervate skin of the dorsal (posterior) surface of the trunk

A

Posterior Primary Rami (branch posteriorly)

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12
Q

How many pairs of spinal nerves for Cervical region

A

8 pairs

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13
Q

How many pairs of spinal nerves for Thoracic region

A

12 pairs

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14
Q

How many pairs of spinal nerves are in the Lumbar region

A

5 pairs

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15
Q

How many pairs of spinal nerves for Sacral region

A

5 pairs

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16
Q

How many pairs of spinal nerves for Coccygeal region

A

1 pair

17
Q

Refers to a network of nerves with crossing axons from spinal nerve roots

A

Nerve Plexus

18
Q

Sensory receptors within muscle tissue
(pressure, proprioception, etc.)

A

To spinal cord and brain

19
Q

Brain to spinal cord to periphery via motor nerves

A

contraction of muscle tissue and therefore movement

20
Q

3 layers of membranes that protects the brain and spinal cord

A

Meninges
(dura, arachnoid, pia matter)