Fractures

Bone fractures, breaks, & joints

PHS

Poll

Have you ever broken a bone before?

• Yes

• No

Different types of fractures

• •Greenstick: only one side of the bone breaks

• •Stress: incomplete break

• •Comminuted: complete break that splinters the bone

• •Spiral: caused by twisting a bone

Multiple Choice

A bone can heal on its own.

• True

• False

Open Ended

Name two factors that can impair the healing process?

Open Ended

Name two ways you can help your body recover from a broken bone.

Multiple Choice

What is the most common explanation for the popping or cracking sound certain joints can make?

• Cracks forming in cartilage

• Bubbles of gas popping

• Bones grinding against each other

Multiple Choice

What type of joint is most commonly popped?

• Fibrous joints

• Cartilaginous joints

• Synovial joints

Multiple Choice

What feature of synovial fluid is responsible for the joint's popping?

• Dissolved gases

• Hyaluronic acid

• Phogocytes

Multiple Choice

Why do the dissolved gases come out of solution?

• The composition of the synovial fluid changed, making the gases less soluble

• The pressure in the joint increased

• The pressure in the joint decreased

Multiple Choice

Why do you have to wait about twenty minutes before you can pop a joint again?

• Small gas bubbles have to be re-absorbed into solution

• The ligaments in the joint have to retract

• The joint is so sore that bending it again is painful

Open Ended

Describe what happens to a molecule of dissolved gas from the time just before the joint is popped to about twenty minutes afterwards.

Open Ended

What factors would affect how easy it is to pop a particular joint?