Show:
Musculoskeletal System
Digestive System
Respiratory System
Nervous System
Circulatory System
100
This part of the skeleton is composed of several bones and protects the brain.
What is the skull?
100

The enzyme responsible for starting chemical digestion.

What is saliva?

100
These balloon like sacs that inflate and deflate, bringing air into and out of the body.
What are the lungs?
100
Tiny cells which send signals to the brain. They are also known as nerve cells.
What are neurons?
100
These disc shaped cells transport oxygen from the lungs to the other parts of the body.
What are red blood cells?
200

Painful, involuntary contractions of a muscle.

What are cramps?

200

The organ with the most surface area in the digestive system.

What is the small intestine?

200
Small sacks in the lungs which allow oxygen and carbon dioxide to move between the lungs and blood stream.
What are aveoli?
200
The central nervous system is composed of the brain as well as this long structure that extends down the back and is the connector between the brain and all other parts of the body.
What is the spinal cord?
200

The chamber in the heart that pushes blood out of the heart and to the other parts of the body.

What is the ventricle?

300

The mineral responsible for making bones stronger.

What is calcium?

300

The ball formed in the mouth to make transport of food easier.

What is the bolus?

300
This chemical is in the air we breathe and we need it to survive.
What is oxygen?
300
Bundles of fibers found throughout the body that sends electrical impulses to and from the brain to the other body structures.
What are nerves?
300

These blood cells are a vital part of the body's immune system.

What are white blood cells?

400

The internal, and spongy, portion of the bone that produces blood cells.

What is bone marrow?

400

These chemicals aid digestion by speeding up chemical reactions.

What is an enzyme?

400

What muscle is at the bottom of the lungs controls breathing?

What is the diaphragm?

400
A long, slender projection of a nerve cell that typically conducts electrical impulses away from the cell's body.
What is an axon?
400

The largest artery in the body. 

What is the aorta?

500

This type of muscle is voluntary, striated, and attaches to bones.

What is skeletal muscle?

500

What is the term for partially digested food that leaves the stomach?

What is chyme?

500

A common, chronic lung disease that causes inflammation and narrowing of the airways, making it difficult to breathe

What is asthma?

500

What permits a neuron to pass an electrical or chemical signal to another neuron.

What is a synapse?

500

The liquid part of the blood, which is 90% water. 

What is plasma?