Human Body Systems Quiz

The process of taking in oxygen and releasing carbon dioxide.

The organ that takes in oxygen from the air we breathe.

The process of breathing in oxygen and breathing out carbon dioxide.

The organ that pumps blood throughout the body, delivering oxygen and nutrients.

The organ that filters waste products from the blood.

The organ that removes toxins from the blood and produces bile for digestion.

The organ that digests food.

The strong structure that supports the body and protects vital organs.

Tiny air sacs in the lungs where gas exchange takes place.

The long bone in the lower arm, on the thumb side.

The long bone in the lower arm, on the pinky side.

A flexible connection between two or more bones, allowing movement.

The backbone, made up of a series of bones called vertebrae.

The main part of a plant that supports it and carries water and nutrients.

A green part of a plant that absorbs sunlight to make food.

Process where plants use sunlight to make food.

A large muscle that helps you breathe by moving up and down.

Joints that let you move forwards and backwards, like your knee.

Joints that allow movement in all directions, like your shoulder.

The largest bone in your leg.

The small bone in your lower leg beside the tibia.

Joints that allow no movement, like the skull.

The part of a plant that anchors it to the ground and absorbs water and minerals.

Tissues that cause movement when they contract.

Rib muscles contract to increase the volume of air the lungs can hold.

Rib muscles relax to decrease the volume of air the lungs hold.

The amount of air your lungs can hold.

Strong tissues that connect bones together in joints.

A smooth, slippery covering that protects bones in a joint.

A gas that is essential for human life and is taken in during breathing.

A gas that is a waste product of respiration and is expelled during breathing.

The act of taking in air, which contains oxygen, and expelling air, which contains carbon dioxide.

The muscle that separates the chest cavity from the abdomen. It contracts to help us breathe in.

The act of breathing in.

The act of breathing out.

Muscles that are attached to bones and allow us to move.

The muscle found in the heart. It is responsible for pumping blood throughout the body.

Pairs of muscles that work together to create movement, where one contracts while the other relaxes.

The process of muscles getting shorter, causing movement.

The air you breathe in contains approximately 79% nitrogen and 21% oxygen.

The air you breathe out contains less oxygen and more carbon dioxide.

The process of gas exchange in the lungs, where oxygen from the inhaled air goes into the blood and carbon dioxide from the blood goes into the air to be exhaled.