ESSENTIAL HUMAN ANATOMY AND PHYSIOLOGY II W LAB UPDATED ACTUAL EXAM
QUESTIONS CORRECT ANSWERS GRADED A PLUS
Question:
the neuron pictured below is best described as.
Answer:
bipolar
Question:
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
Question:
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
Question:
where is the integration center of a reflex located.
Answer:
CNS
Question:
, 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
Question:
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
Question:
label the nerves in the figure.
Answer:
a. lateral femoral cutaneous b. femoral nerve c. saphenous
Question:
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.
Answer:
a
Question:
what is the purpose of the blood brain barrier? describe its maintenance from a cellular level.
Answer:
QUESTIONS CORRECT ANSWERS GRADED A PLUS
Question:
the neuron pictured below is best described as.
Answer:
bipolar
Question:
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
Question:
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
Question:
where is the integration center of a reflex located.
Answer:
CNS
Question:
, 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
Question:
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
Question:
label the nerves in the figure.
Answer:
a. lateral femoral cutaneous b. femoral nerve c. saphenous
Question:
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.
Answer:
a
Question:
what is the purpose of the blood brain barrier? describe its maintenance from a cellular level.
Answer:
