1. a. Explain why the circle of Willis is important in the cerebral circulation. b. Predict the effects of obstruction of the left middle cerebral artery. c. Explain why a constant supply of oxygen...

1. a. Explain why the circle of Willis is important in the cerebral circulation.

b. Predict the effects of obstruction of the left middle cerebral artery.

c. Explain why a constant supply of oxygen and glucose to the brain is necessary.

2. a. Describe the characteristics of a spinal cord tract, using an example.

b. Differentiate an upper motor neuron from a lower motor neuron by location and function.

c. Describe a nerve plexus and how it affects nerve distribution.

d. Describe an acquired reflex and include an example.