Digestive System
What is the main job of the digestive system?
Beak down food so the body can absorb nutrients and use them for energy, growth and repair.
What are the two main organs of the respiratory system?
The Lungs.
What organ pumps blood throughout the body?
The heart.
What two main parts make up the musculoskeletal system?
Muscles and bones.
What organ is the control centre of the nervous system?
Where does digestion begin?
The mouth chews on food and saliva breaks it down.
What is the name of the tube that carries air towards your lungs?
Wind pipe or trachea
What is one important job of the circulatory system?
To transport oxygen and nutrients to cells throughout the body.
Which bones protect your brain, heart and lungs?
Skull protects brain, and ribs protect lungs and heart.
What structure connects the brain to nerves throughout much of the body?
The Spinal cord
What organ churns food and mixes it with digestive juices?
The stomach.
What muscle beneath the lungs helps you to breath?
Diaphragm.
What are the tubes that carry blood throughout the body called?
Blood vessels (arteries, veins and capillaries)
What does it mean when a muscle contracts?
The muscle tightens and shortens, creating a pulling force that can produce movement.
What is the main job of the nervous system?
Send and receive messages that control the body's activities.
What is the difference between small intestine and large intestine?
Small = absorbs nutrients.
Large = absorbs remaining water.
What two gases are exchanged when we breath?
Oxygen and Carbon dioxide
How do the respiratory and circulatory systems work together?
Oxygen enters the blood in the lungs and the heart pumps blood to deliver that oxygen throughout the body.
Why do muscles need bones to help your body move?
Bones provide a strong framework and attachment points. Muscles pull bones to move the body at its joints.
When you raise your hand, how does your nervous system help you do it?
Brain sends signals through nerves to the muscles telling them to move.
How do the digestive system and circulatory systems work together?
Digestive breaks down food and absorbs nutrients into the blood. The circulatory system carries those nutrients throughout the body.
Why do you breath faster when you're running or exercising?
Your working muscles need more oxygen and produce more carbon dioxide. Breathing faster helps bring in oxygen and remove carbon dioxide.
After running laps in gym class, why does your heart beat faster?
Your muscles need more oxygen and nutrients. The heart pumps faster to deliver more blood to working muscles and help remove waste products.
Explain how your nervous, muscular and skeletal systems work together to kick a soccer ball.
Why can you control your arm movements but do not need to tell yourself to breath every second?
Nervous system controls voluntary actions and automatic processes.