What is the skull?
This bone protects your brain.
What is movement?
Muscles help your body do this by contracting.
What is the respiratory system?
This system delivers oxygen to your muscles so they can work.
What are biceps and triceps?
These muscles work together to bend and straighten your arm.
Bones are soft on the outside but hard on the inside.
False
What are long bones?
These are the bones in your arms and legs.
What is structure or support?
Bones give your body this, so you can stand upright.
What is the circulatory system?
This system pumps blood carrying nutrients to your bones and muscles.
What is a pivot joint?
This type of joint allows rotation, like turning your head side to side.
Muscles can only pull; they cannot push.
True
What is the femur?
This is the largest bone in the human body.
What are skeletal muscles?
This type of muscle is attached to bones and helps move them.
What is contract or move?
Your brain and nerves send signals to muscles to tell them to do this.
What is relax?
When one muscle contracts, its opposing muscle does this.
The largest muscle in the body is found in your arm.
False (it's the gluteus maximus in the buttocks)
What are biceps?
These muscles are found on the front of your upper arm.
What is move or bend?
Joints allow your bones to do this.
What is the digestive system?
Muscles need energy from food, so this system helps break down food into nutrients.
What is flexion?
This type of muscle movement decreases the angle between two bones.
Joints are where two or more bones meet.
True
What is a ball-and-socket joint?
This joint allows for the widest range of movement, such as in your shoulder.
What is relax?
Muscles work in pairs where one muscle contracts and the other does this.
What are the respiratory and circulatory systems?
When you exercise, these two systems increase their activity to supply muscles with oxygen and energy.
What do tendons attach muscles to?
Bones.
Smooth muscles are the muscles that move your skeleton.
False (skeletal muscles move the skeleton; smooth muscles control internal organs)