Respirtory system
What organ helps you breathe?
The Lungs
What organ pumps blood around the body?
The heart
What organ controls the nervous system?
The brain
Where does digestion begin?
The mouth
How many bones are in an adult human body?
206 bones
What gas do we breathe in?
Oxygen
What liquid carries oxygen and nutrients around the body?
Blood
What connects the brain to the rest of the body?
The spinal cord
What organ churns food and mixes it with acid?
The stomach.
What is the main job of the skeleton?
To support and protect the body.
What gas do we breathe out?
Carbon dioxide
What blood vessels carry blood away from the heart?
arteries
What cells carry messages through the nervous system?
Neurons
Where are most nutrients absorbed into the blood?
The small intestine.
What is the longest bone in the human body?
The femur
What muscle helps the lungs expand when breathing?
The diaphragm
What blood vessels carry blood back to the heart?
Veins
What is a quick, automatic response to a stimulus called?
A reflex
What organ produces bile to help digest fats?
The liver.
What protects the brain?
The skull
Where does oxygen move into the blood?
The alveoli
What part of the blood carries oxygen?
Red blood cells
What part of the brain helps control balance and coordination?
The cerebellum
What is the main job of the large intestine?
To absorb water from undigested food.
What connects muscles to bones?
Tendons