1. Nerve cells responsible for receiving external stimuli from the body's environment and passing that signal through nerves to the central nervous system.

1. A scientific procedure to make a discovery, test a hypothesis, or demonstrate a known fact.

1. Something that has truth, strong logic, or fact.

1. A way to carefully plan experiments to investigate scientific questions or problems.

1. Signs of disease or injury.

1. In disease, a factor, such as a microorganism or a chemical substance, that can impact the development of a disease or illness.

1. Tiny infectious agents that can only multiply when they are inside a host, the living cells of plants, animals, or bacteria.

1. Single-celled organisms that do not rely on a host.

1. Organisms such as yeasts or molds that reproduce quickly in moist, humid environments.

1. A microscopic organism such as a bacterium, virus, or fungus.

1. The identification of an illness or other problem by examination of the medical evidence.

1. A medicine that limits the growth of or destroys microorganisms.

1. An expert in microbiology, the study of microorganisms such as bacteria and viruses.

1. Specialized clothing or equipment that an employee wears for protection against infectious materials (as defined by OSHA). This includes safety goggles, gloves, and laboratory aprons.

1. A group or individual used as a standard of comparison for checking the results of a survey or experiment.

1. A variable that does not depend on the state of another variable.

1. Group or sample expected to produce a positive result.

1. Group or sample expected to produce a negative result.

2. A medical practitioner specializing in children and their diseases.

3. 

1. Working together on a common purpose.

1. Guidelines that are developed by a team regarding how they are to interact, communicate, and conduct themselves as part of the team.

The part of the nervous system that includes nerves and is not part of the brain and spinal cord.

1. The part of the nervous system that includes the brain and spinal cord.

1. Nerve cells that pass signals from the brain or spinal cord to a muscle or gland.

1. A nerve cell that sends signals or transmits nerve impulses.

1. A branch extending from a neuron that receives signals from another neuron through a synapse.

A fatty substance that surrounds the axon and increases the speed at which signals travel.

1. 

1. The gap between the branches extending from a neuron's axon that sends a signal to the next neuron.

1. The long extension from a nerve cell along which signals travel.

1. Chemicals that assist in passing a signal through the synapse.

2. 

1. Diseases of the brain, spine, and nerves. They're also called nervous system diseases.

1. An area of an organ or tissue that suffered damage through injury or disease.

2. 

1. An abnormal growth of tissue, whether cancerous or noncancerous.

2. 

1. A medical doctor who interprets medical images to diagnose and treat diseases or injuries.

2. 

1. A bundle of neurons.

1. Healthcare professionals who specialize in the imaging of human anatomy for the diagnosis and treatment of illnesses.

1. A medical professional who studies and investigates the incidence, distribution, and possible control of diseases.

1. The measure of frequency and speed of spread in a population at risk of becoming ill.

1. An attack rate focused on contaminated food causing a foodborne illness.

1. A poison that affects the nervous system.