1. When does the development of a child's nervous system begin ?
a.as soon as ferti ization b. a month after fertilization c. third week after fertilization d. second week after fertilization

2. Homeostasis is better understood as the _____
a. Exchange of substances that sustain life. b. Energy flow within the embryo. Balance of flow in the substances that sustain life. d. Overall functions of life in the womb.

3. What does regulation mean ?
a. To adjust something so that it works correctly as required. b. To control or direct something by rules. C. To make something to go faster or slower. d. To allow passage of air, gas etc.

4. Which part of the brain handles the incoming and outgoing messages ?
a. cerebrum b. cerebellum C. hypothalamus d. thalamus

5. Which among the protective measures of the nervous system serves as a cushion to minimize damage ?
a. bones b. tissues C. meninges d. cerebrospinal fluid​