Mock had been singing in the rock-n-roll band, the Sliding Rocks (they were originally called Mocks’ Rocks), and they were about to sign a deal with a major record label. The Sliding Rocks had been on the road for about six months when Mock began to notice he was having problems hearing the high pitched tones on some songs. Also, every morning after a show he would wake up experiencing a persistent clicking and ringing in his ears. After moving about during the day the ringing sensation would slowly disappear. However, it seemed to last longer each time it occurred. Mock decided to see a hearing specialist.
1. Why is there electrical activity in the brain? Describe how nerve impulses are transmitted from neuron to neuron.
2. What is myelin? What is its function? Explain.
3. Compare and contrast the structure and functions of the Central Nervous System and the Peripheral Nervous System. How are nerve cells ensheathed with myelin in the CNS? In the PNS?