Neurology

Question 1

impulse towards cell body

Answer 1

dendrites

Question 2

impulse away from body

Answer 2

axons

Question 3

postcentral gyrus

Answer 3

sensory (somastatic cortex)

Question 4

precentral gyrus

Answer 4

motor

Question 5

broca’s area

Answer 5

motor speech

forming words

Question 6

only sensation that bypasses the thalamus is

Answer 6

smell

Question 7

resting membrane potential: muscle

Answer 7

85-90mv

Question 8

resting membrane potential: neuron

Answer 8

65-70mv

Question 9

resting membrane potential: inside

Answer 9

-

protein on inside

Question 10

resting membrane potential: outside

Answer 10

+

sodium on outside

Question 11

sodium rushing into cell

Answer 11

depolarization

Question 12

sodium leaking in towards sodium equilibrium point from receptor stimulation

Answer 12

ascending limb

Question 13

vibration

Answer 13

pacinion

Question 14

joint position sense

Answer 14

ruffini

Question 15

accurate touch

Answer 15

meissners/merkels

Question 16

pain, temp, crude touch

Answer 16

spinothalamic tracts (free naked nerve endings)

Question 17

enough sodium leaks in or any portion of inner membrane to be +
spontaneous depolarization
“all or nothing”

Answer 17

threshold

Question 18

potassium out cells of = repolarization
threshold to zero (resting membrane potential)
+ outside, - inside
absolute refractory period

Answer 18

descending limb

Question 19

hyperpolarized AKA relative refractory period
more negative
harder to fire the nerve

Answer 19

subnormal period

Question 20

minimum current for action potential

Answer 20

rheobase

Question 21

time, using 2x rheobase for action potential

Answer 21

chronaxie

Question 22

Cl- rushes in, may also open K+ channels more to leak out K+

Answer 22

inhibitory post synaptic potential

Question 23

glycine

brain = GABA

Answer 23

inhibitory neurotransmitter of spine