Chapter 21: Academic Knowledge: Body Systems for Regulation and Communication | Crossword

Across

1.	an area of the parietal lobe dedicated to gathering and interpreting information regarding the five senses of the body from afferent neurons.
7.	a transparent tissue through which light enters the eye.
8.	a nerve cell that receives stimuli.
11.	an interwoven combination of spinal nerve roots through which messages pass.
13.	term that describes sensory transmitters that send impulses from receptors in the skin, muscles, and joints to the central nervous system.
14.	a membrane that supplies blood to the eye and controls the light reflected to the retina.
15.	a swelling located between two neurons.
16.	a transparent, flexible structure that focuses light at the back of the eye.
17.	the part of the brain that includes the cerebellum and brainstem.
18.	a long, tail-like projection on a neuron, which takes information from the cell body out to the muscles.
19.	the opening through which light rays enter the eye.
20.	gland that releases hormones that affect the operation of many other glands in the body; also called the master gland.
21.	the tough, fibrous outer layer of the eye; also known as the white of the eye.

Down

1.	a condition that limits the ability to move certain parts of the body.
2.	to provide an area with a nerve connection to the brain.
3.	a tiny gap between an axon and a receptor cell.
4.	the thickened end of the olfactory nerve that sends sensory impulses to the olfactory region of the brain.
5.	the largest endocrine gland in the body, which controls energy, metabolism, and calcium levels in the blood.
6.	a nerve cell.
9.	tiny bumps on the tongue that house taste buds.
10.	a fatty layer that protects the axons of some nerves.
12.	three tough layers of tissue covering the brain and spinal cord, including the dura mater, arachnoid mater, and pia mater.
14.	a fluid-filled chamber of the inner ear that is used for hearing.