The Skeletal System
The human skeleton has 206 ____.
Bones
What type of muscle is found only in the human heart?
Cardiac Muscles
These bones protect our heart and lungs.
Ribs
There are about 650 of these in the human body.
Muscles
This is another name for when a bone breaks.
Fracture
The purpose of our skeleton is to give our body shape and protect our ______.
Organs
Smooth Muscles
This bone protects our brain.
Skull
Muscles work in pairs. When one _____ the other lengthens.
Contracts
This is a condition when joints become inflamed, making it difficult to move around.
Arthritis
This is the name for where our bones meet. They help keep us flexible and move around.
Joints
What type of muscle is attached to our bones, allowing us to move around?
Skeletal Muscles
This system of small bones (vertebrae) is also called the backbone.
Spine
Muscles are stretchy and similar to ________ (two words).
Elastic bands
This is a common sports injury that happens when a muscle gets overused. Resting the muscle can help to relieve this condition.
Tendonitis
This is the flexible, rubbery substance found in our joints.
Cartilage
Muscles that we can control, such as those involved in kicking a soccer ball, are called _____________.
Voluntary Muscles
This bone is located between the abdomen and legs.
Pelvis
Muscles help us move by pulling our ________.
Bones
This is a condition when bones become brittle, thin and spongy. Bones will break more easily and the spine sometimes begins to crumble and collapse.
Osteoporosis
These bands of tissue connect our bones together so our skeleton doesn’t fall apart.
Ligaments
These cords of tough tissue hold our bones and muscles together.
Tendons
This is the longest bone in the human body.
Femur (thigh bone)
Muscles, like those in our hearts, that run automatically are called ________ muscles.
Involuntary
This is when ligaments get overstretched or torn.
Sprain