1. At which level of the spine would a lumbar puncture occur, and why? 2. Describe the general location of the cervical spinal nerves. 3. Describe a dermatome and its purpose. 4. Describe the path of...

1. At which level of the spine would a lumbar puncture occur, and why?

2. Describe the general location of the cervical spinal nerves.

3. Describe a dermatome and its purpose.

4. Describe the path of nerve impulses involved in the withdrawal reflex that occurs when one pricks a finger on a sharp pin. Name each element in the reflex arc and state its function.