ANP 1106 Final Exam Questions with Guaranteed Pass Questions with Correct Answers

ANP 1106 Final Exam Questions with Guaranteed Pass Questions with
Correct Answers


Question 1:
Where are APs generated
Answer:
axon hillock


Question 2:
Sensory input
Answer:
gather info and monitor changes


Question 3:
processes and intergrates info and decides what to do with it
Answer:
intergration


Question 4:
motor output
Answer:
response to stimuli by activating effector organs


Question 5:
membrane ion channel
Answer:
large proteins often with several subunits


Question 6:
2 types of channels
Answer:
leakage/non-gated and gated

,Question 7:
leakage channels
Answer:
always open


Question 8:
gated channels
Answer:
changes shape to open and close in response to specific signals - three types


Question 9:
chemically/ligand gated - open when speific chemical binds, voltage gated - opens and closes in
response to change in membrane potential, mechanically gated - opens in response to physical
deformation of the receptor
Answer:
types of gated channels


Question 10:
resting membrane potenial
Answer:
relies on diff concentrations of K+ and Na+ inside and outside cells and also differences in
membrane permeablity to these ions


Question 11:
graded potential
Answer:
incoming signals operating short distances that have varied/graded strength


Question 12:
action potential
Answer:
long distance signals of axons that always have the same strength

,Question 13:
a decrease in membrane potential (the interior of the neuron becomes less negative) -
increases probability of producing nerve impulses
Answer:
depolarization


Question 14:
hyperpolarization
Answer:
increase in membrane potential - reduces nerve impulses


Question 15:
stimulus intensity
Answer:
All action potentials are alike and are independent of stimulus intensity


Question 16:
the speed at which an action potential is propagated along the length of an axon
Answer:
conduction velocity


Question 17:
rate of AP propagation de
Answer:
axon diameterdegree of myelination


Question 18:
2 types of conduction
Answer:
continuous conductionsaltatory conduction


Question 19:
continuous conduction
Answer:
slow conduction that occurs in nonmyelinated axons

, Question 20:
saltatory conduction
Answer:
occurs only in myelinated axons, fast, appear to jump from gap to gap


Question 21:
group A nerves
Answer:
largest diameter, myelinated, 150m/s


Question 22:
group B nerves
Answer:
medium, lightly myelinated, 15m/s


Question 23:
group C nerves
Answer:
smallest diameter, 1m/s, not myelinated


Question 24:
less common synapses
Answer:
Axoaxonic (axon to axon) Dendrodendritic (dendrite to dendrite) Dendrosomatic (dendrite to
soma)


Question 25:
most common synapses
Answer:
axodendritic and axosomatic


Question 26:
parts of a typical synapse
Answer:
axon terminal of presynaptic neurons and neurotransmitter receptor regions