1. Chapter 12, Lesson 1 Vocabulary
Hydrostatic skeleton Coelom Endoskeleton Nervous system Nerve net Neuron Undulation Jet propulsion

2. A fluid filled internal cavity surrounded by muscle tissue
Hydrostatic skeleton

3. The basic functioning unit of the nervous system found in animals’ nerve cords; found in animals with bilateral symmetry and brains or brainlike structures
Neuron

4. An internal support structure, usually made of bone, and covered by a soft, outer covering
Endoskeleton

5. The fluid filled cavity in a hydrostatic skeleton
Coelom

6. A netlike control system that sends signals to and from all parts of the body; found in animals with radial symmetry and no brain
Nerve net

7. A wavelike motion used by animals that do not have legs; used by animals on land AND in the water
Undulation

8. a type of movement in which the animal takes in water and then pushes it out forcefully to move forward
Jet propulsion

9. Control system that help protect animals from harm and help them move and find food
Nervous system

10. This is an example of which vocabulary word?
Jet propulsion

11. This is an example of which vocabulary word?
undulation