Physical health and fitness

Question 1

skeleton major functions

Answer 1

it supports and maintains body shape, protects internal organs, enables movement, produces blood cells (bone marrow), and stores minerals (e.g calcium and iron)

Question 2

muscles

Answer 2

they work in antagonistic pairs because they can only pull not push, meaning that when one muscle relaxes, the other contracts

Question 3

how does the blood flow through the heart

Answer 3

1. the right atrium recieves deoxygenated blood from the body. 2. From the right atrium it goes down into the right ventricle. 3. it it leaves the right ventricle to the lungs where it gets oxygenated. 4. then the oxygenated blood comes down from the lungs and goes into the left atrium. 5. from the left atrium it goes down into the left ventricle. 6. the blood from the left ventricle then gets pumped to the rest of the body