BIOD 152 final exam
the neuron pictured below is best described as
multipolar
the neuron pictured below is best described as
bipolar
name and describe what is occurring in the neuron cell membrane in section 4 of the diagram
afterpolarization
potassium gates are slow to close so there is an undershoot of potential
charge drops below -70mV and then returns to -70mV once at resting state again
name and describe what is occurring in the neuron cell membrane in section 2 of the diagram
depolarization
sodium gates open and sodium rushes into axon
voltage goes past 0 and up to 40 mV
, where is the integration center of a reflex located
CNS
what is true about the flexor withdrawal reflex
a. it does not involved interneurons
b. it involves excitatory interneurons
c. it involves inhibitory interneurons
d. the effect of the reflex is to create a co-contraction of two muscles
e. a and d
f. b and c
f
what is false about the flexor withdrawal reflex
a. it does not involve interneurons
b. it involved excitatory interneurons
c. it involves inhibitory interneurons
d. the effect of the reflex is to create a co-contraction of two muscles
e. a and d
f. b and c
e
label the nerves in the figure
a. lateral femoral cutaneous
b. femoral nerve
c. saphenous
which of the following is most likely a symptom of ALS
a. impaired ability to swallow
b. decreased sensation in the hands
c. shrinkage of cerebral cortex
d. increased size of brain ventricles
e. all of the above
the neuron pictured below is best described as
multipolar
the neuron pictured below is best described as
bipolar
name and describe what is occurring in the neuron cell membrane in section 4 of the diagram
afterpolarization
potassium gates are slow to close so there is an undershoot of potential
charge drops below -70mV and then returns to -70mV once at resting state again
name and describe what is occurring in the neuron cell membrane in section 2 of the diagram
depolarization
sodium gates open and sodium rushes into axon
voltage goes past 0 and up to 40 mV
, where is the integration center of a reflex located
CNS
what is true about the flexor withdrawal reflex
a. it does not involved interneurons
b. it involves excitatory interneurons
c. it involves inhibitory interneurons
d. the effect of the reflex is to create a co-contraction of two muscles
e. a and d
f. b and c
f
what is false about the flexor withdrawal reflex
a. it does not involve interneurons
b. it involved excitatory interneurons
c. it involves inhibitory interneurons
d. the effect of the reflex is to create a co-contraction of two muscles
e. a and d
f. b and c
e
label the nerves in the figure
a. lateral femoral cutaneous
b. femoral nerve
c. saphenous
which of the following is most likely a symptom of ALS
a. impaired ability to swallow
b. decreased sensation in the hands
c. shrinkage of cerebral cortex
d. increased size of brain ventricles
e. all of the above
