BIOD152 ACTUAL TEST PAPER ACCURATE
QUESTIONS AND CORRECT ANSWERS
GRADED APLUS
●● the neuron pictured below is best described as
Answer: bipolar
●● name and describe what is occurring in the neuron cell membrane in
section 4 of the diagram
Answer: 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
Answer: 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
Answer: 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
Answer: 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
Answer: e
●● label the nerves in the figure
Answer: a. lateral femoral cutaneous
b. femoral nerve
QUESTIONS AND CORRECT ANSWERS
GRADED APLUS
●● the neuron pictured below is best described as
Answer: bipolar
●● name and describe what is occurring in the neuron cell membrane in
section 4 of the diagram
Answer: 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
Answer: 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
Answer: 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
Answer: 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
Answer: e
●● label the nerves in the figure
Answer: a. lateral femoral cutaneous
b. femoral nerve