____ is defined as an increased amount of circulating solid blood components.

________ cause the disruption of DNA function and cell death

A) Hormones B) Biological response modifiers C) Antimetabolites D) Alkylating antineoplastic agents

The central nervous system is composed of the:

A. brain and spinal cord. B. brain and sensory nerves. C. motor and sensory nerves. D. spinal cord and sensory nerves.