Nervous System

Question 1

connective tissue coverings that run continuously arount spinal cord and brain

Answer 1

meninges

Question 2

3 layers in order

Answer 2

dura mater, arachnoid mater, pia mater

Question 3

found in sub-arachnoid area

Answer 3

cerebral spinal fluid (CSF)

Question 4

inflammation of the meninges, caused by infection (bacterial, viral, fungal), weakened immune system, life threatening, very young (teens-20s)

Answer 4

meningitus

Question 5

symptoms of meningitus

Answer 5

flu symptoms, fever, light sensitivity, neck hurts/feels stiff, hemmoraging under the skin

Question 6

spinal cord length

Answer 6

42-45 cm (16-18 in)

Question 7

how many spinal segments give rise to how many pairs of spinal nerves

Answer 7

31, 31

Question 8

T/F the spinal cord runs the entire length of the vertebral column

Answer 8

false

Question 9

where does the spinal cord run

Answer 9

foramen magnum to L2

Question 10

what happens to the spinal cord after L2

Answer 10

it branches into couda aquina (horses tail)

Question 11

T/F the spinal cord is not straight and narrow

Answer 11

true

Question 12

what enlargements are on the spinal cord

Answer 12

cervical and lumbar

Question 13

can you recover from a break of the vertabre that puts pressure on the spinal cord

Answer 13

yes

Question 14

if a broken vertabre pierces the spinal cord, what does it cause

Answer 14

perminent paralysis

Question 15

how do we divide the spinal cord

Answer 15

right and left halves

Question 16

how is the anterior side of the spinal cord distinguished

Answer 16

the anterior fissure (deep groove)

Question 17

how is the posterior side of the spinal cord distinguished

Answer 17

the posterior sulcus (shallow groove)

Question 18

what are the “horns”

Answer 18

centrally located H-shaped mass of gray matter

Question 19

what is in the central canal

Answer 19

CSF

Question 20

3 different horns

Answer 20

anterior, posterior, and lateral

Question 21

what types of neurons are in the spinal cord

Answer 21

association/intregrative (sensory) and motor neurons

Question 22

what do ascending tracts do

Answer 22

take impulses to the brain (sensory neuron)

Question 23

what do descending tracts do

Answer 23

take impulses away from the brain (motor neuron)

Question 24

what does the spinal cord do?

Answer 24

conduct sensory and motor impulses to and from the brain from ascending and descending pathway

Question 25

what do the names of tracts indicate

Answer 25

position in the white matter, origin, termination and direction of impulse

Question 26

sensory input is conducted along what 2 pathways?

Answer 26

anterior spinothalamic and posterior column

Question 27

what does the anterior spinthalamic do

Answer 27

detects pain, temp, crude touch, pressure, and itch

Question 28

sensory nervous system allows…

Answer 28

…CNS to be aware

Question 29

controls precise, discrete, voulentary muscle movement

Answer 29

cerebral motor cortex

Question 30

semi-voulentary movements (walk, laugh)

Answer 30

basal ganglia

Question 31

coordinate body movement

Answer 31

cerebellum

Question 32

invoulentary response (respiration center, cardiac center)

Answer 32

brain stem

Question 33

controls reflexes

Answer 33

spinla cord

Question 34

nerve impulses cause voulentary monement of skeletal muscle

Answer 34

pyraminal (direct)

Question 35

nerve impulses for an autonomic movement, coordinate body movement with visual stimuli, maintain skeletal muscle tone and posture

Answer 35

extrapyramindal (indirect)

Question 36

fast automonic response to a stimulis

Answer 36

reflex

Question 37

what are spinal nerves pathways for?

Answer 37

communication between spinal cord and peripheral features

Question 38

1. receptor picks up