Nervous System

2. The three coverings around the brain and spine and help cushion, protect, and nourish the brain and spinal cord.
3. Bring messages to CNS.
7. Attached to the undersurface of the brain.
10. Fight or flight response.
11. Allows body to respond quickly to changes in the environment by gathering information, transmitting, and processing information to determine the best response, and sending information to muscles, glands, and organs so they can respond correctly.
12. Between sensory and motor neurons CNS.
13. The rest of the nerves in animal’s body.
14. Relays information to internal organs.
16. Comprehension of language and the production of meaningful speech.
18. Sensory processing, attention, and language.
20. Carry messages from CNS.
21. Mass nerve cells controlling nervous system.
22. In Hydra,_____________ are diffused all over the body to control the contraction of the gastrovascularcavity or the gastrocoel.

1. Attached to the spinal cord.
4. Relays information from skin, sense organs & skeletal muscles to CNS.
5. When body is at rest or with normal functions.
6. The onset of cephalization marks a more complex nervous system.
7. Is composed of brainand ventralnervecords with clusters of neurons called ganglia.
8. Located in the frontal lobe.
9. Auditory perception, speech, and complex visual perceptions.
15. Visual center.
17. Motor area involved in movement and in planning and coordinating behavior.
19. A group of brain structures that help regulate the expression of emotions and emotional memory.