Nerve test

Question 1

Nervous system

Answer 1

includes all neural tissue in body

Question 2

CNS (central nervous system)

Answer 2

made up of brain and spinal cord

Question 3

PNS (peripheral nervous system)

Answer 3

outside

Question 4

Afferent

Answer 4

brings impulses from CNS receptors

Question 5

Efferent

Answer 5

brings impulses from CNS to peripheral nerves

Question 6

Somatic Nervous System (SNS)

Answer 6

Controls SM Contractions

Question 7

Automatic Nervous System (ANS)

Answer 7

controls cardiac & smooth muscles

Question 8

Sympathetic Division

Answer 8

Fight or Flight

Question 9

Parasymapathic Division

Answer 9

Rest and Relaxation

Question 10

Cell Body

Answer 10

called somai has large nucleolus

Question 11

Perikaryon

Answer 11

cytoplasm around nucleolus

Question 12

Neurofilaments & Neurotubles

Answer 12

Forms cytoskeleton of cell

Question 13

Dendrites

Answer 13

highly branched processes that stick out from the neuron ;receives info from other neurons

Question 14

Axon

Answer 14

long cytoplasms process; carries impulses

Question 15

Axoplasm

Answer 15

cytoplasm of axon

Question 16

Axolemma

Answer 16

cell membrane

Question 17

Axon Hillock

Answer 17

Thickened region between body and axon

Question 18

Telodendria

Answer 18

fingerlike extension of axon that leads to synaptic knob

Question 19

Synaptic knob/terminal

Answer 19

ends of telodendria which contains the vesicles of ACH

Question 20

Synapse

Answer 20

site where neurons communicate with another cell. two cells meet at every synapse

Question 21

pre-synaptic cell

Answer 21

has the synaptic terminal and sends a message ;usually a neruon

Question 22

post-synaptic cell

Answer 22

receives the message can be neuron or other types of cells such as muscle or gland

Question 23

posterior median sulcus

Answer 23

a shallow groove along the posterior surface of the spinal cord

Question 24

Anterior median fissure

Answer 24

A deep grove along the anterior surface

Question 25

Cervical enlargement

Answer 25

supplies nerves to shoulder gridle & upper limbs

Question 26

lumbar enlargement

Answer 26

supplies nerves to pelvic gridle & lower limbs

Question 27

spinal cord can be divided into 31 segments based on origins

Answer 27

- C1-C8 - T1-T12 - L1-L5 - S1-S5 - C0-1

Question 28

Dorsal root ganglia

Answer 28

which contain the 'cell bodies' of sensory neurons (brings info to spinal cord)

Question 29

Ventral root

Answer 29

contains axons of motor neurons which controls somatic and visceral effectors

Question 30

spinal nerves

Answer 30

when the "sensory" & "motor" roots are bound together

Question 31

Spinal Cord

Answer 31

grows as vertebral column grows until age 4, after age 4, the vertebral column continues to grows but spinal coed does not

Question 32

Spinal meninges layers 3

Answer 32

- dura mater- forms outermost cover of spinal cord - Arachnoid- middle layer of meninges contains network of collagen & elastic fibers - Pia mater- innermost meningeal layer; has elastic & collagen fibers

Question 33

Anterior gray horns

Answer 33

contains somatic motor nuclei

Question 34

lateral gray horns

Answer 34

contains visceral motor nuclei

Question 35

Grey commissures

Answer 35

connects posterior and anterior sections

Question 36

White matter

Answer 36

located on each side of spinal cord; located outside of 'butterfly'

Question 37

Assending tracts

Answer 37

carry sensory info towards the brain

Question 38

Desending tracts

Answer 38

convey motor commands from spinall cord

Question 39

3 layers of connective tissue

Answer 39

epineum- outer most layer consisting of dense network of collagen fibers Perineum- middle layer located inward from epineurium Endoneurium- innermost layer which surronds each axon

Question 40

Nerve Plexus

Answer 40

Complex interwoven network of nerves

Question 41

Cervical plexus

Answer 41

C1- C5

Question 42

Brachial

Answer 42

C5 -T1

Question 43

Lumbar

Answer 43

L1- L4

Question 44

Scral plexus

Answer 44

L4- S4