AP II Final Exam

Question 1 2 / 2 pts The neuron pictured, below, is best described as: Correct! Bipolar It has two extensions from the central cell body. Multipolar Unipolar Pseudounipolar Question 2 10 / 10 pts Name and describe what is occurring in the neuron cell membrane in section 4 of the diagram. Include the charge of the membrane during this phase. Your Answer: • • Afterpolarization (Hyperpolarization) Potassium gates are slow to close and there is an undershoot of the potential. The charge drops below -70mV and then returns to -70mV once at resting state again. Question 3 4 / 4 pts Where is the integration center of a reflex located? CNS (central nervous system) Question 4 4 / 4 pts What is true about the flexor withdrawal reflex? A. It does not involve 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&D Correct! F. B&C Question 5 10 / 10 pts Label the nerves (A-C) in the figure below: A: _________________ B: _________________ C: _________________