Digestive System

Question 1

the use of chemicals like acids and enzymes to break food down into smaller molecules.

Answer 1

Chemical digestion

Question 2

the use of physical methods like chewing to break food down into smaller pieces.

Answer 2

Mechanical digestion

Question 3

enzymes are necessary for most chemical reactions in our bodies.

Answer 3

Enzymes

Question 4

of or relating to nourishment or nutrition.

Answer 4

Alimentary

Question 5

The atria (top chambers) are thin-walled chambers where blood enters the heart.

Answer 5

Atrium

Question 6

The ventricles (bottom chambers) are thick-walled chambers which push blood away from the heart.

Answer 6

Ventricle

Question 7

The smallest type of blood vessel that connects small arteries to small veins.

Answer 7

capillary

Question 8

A blood vessel that carries oxygen-poor blood to the heart from tissues and organs in the body.

Answer 8

vein

Question 9

A blood vessel that carries oxygen-rich blood from the heart to tissues and organs in the body.

Answer 9

artery

Question 10

A wall of tissue that separates the left and right sides of the heart.

Answer 10

septum

Question 11

Flaps that are located within the heart that open and close to control the flow of blood. They ensure blood flows in the correct direction, preventing it from flowing backward.

Answer 11

Valve