Circulatory System
What organ pumps blood through the body?
Heart
What gas do we breathe in to stay alive?
Oxygen
How many bones are in the human body?
206
What body system helps bones move?
Muscular system
What is the control center of the human body?
Brain
What blood vessels carry blood away from the heart?
Arteries
What organ takes in oxygen and removes carbon dioxide?
Lungs
What system supports the body and protects organs?
Skeletal system
What do muscles do to move bones: contract or relax?
They contract and relax
What system is made up of the brain and the spinal cord?
Nervous system
What blood vessels carry blood back to the heart?
Veins
What tube carries air from the nose to the lungs?
Trachea
What bendable material cushions bones
cartilage
What type of muscle is found in your heart?
Cardiac muscle
Which part of the brain controls balance and coordination?
Cerebellum
What tiny blood vessels connect arteries and veins?
Capillaries
What muscle under the lungs helps air move in and out?
Diaphragm
What mineral helps keep bones strong and healthy?
Calcium
What type of muscle is attached to bones and helps you move?
Skeletal muscle
What carries messages from the brain to all parts of the body?
Nerves
Which system moves oxygen and nutrients through the blood?
Circulatory system
Which two body parts work together to help you breathe?
Lungs and diaphragm
How does cartilage help bones move without pain?
It cushions bones and reduces friction at joints
When one muscle contracts, what happens to the opposite muscle?
It relaxes
What kind of nerves carry messages from sense organs to the spinal cord?
Sensory nerves