Bones Lesson

Why do we need our bones?

By Darcy Williams

Multiple Choice

How many bones are in an adult human body?

• 206

• 220

• 156

• 106

Multiple Choice

Where bones meet they form ___________.

• cartilage

• joints

• ligaments

• tendons

We need our bones for PROTECTION

​Bones protect your internal organs

​ON YOUR NOTES:

The skeletal system provides bony protection for soft, internal organs. The skull protects the brain; the thorax (sternum, rib cage, and spine) protects the heart, lungs, and other organs.

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Multiple Choice

What do bones protect?

• skin

• internal organs

• thoughts

• muscles

Multiple Select

What 3 bones make up the thorax? Select 3 answers.

• sternum

• skull

• rib cage

• spine

• pelvis

Bones provide STORAGE

​Your bones store important materials

​ON YOUR NOTES:

Bones store materials such as fat, calcium, and other minerals (like phosphorus) for later use.

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• Fat-stored in the yellow bone marrow of long bones

• Calcium-important for blood clotting, helping muscles contract, and regulating your heart beat

• Phosphorus-​helps the body store and use energy, helps reduce muscle pain after working out

Multiple Choice

What material IS NOT stored in your bones?

• phosphorus

• calcium

• Vitamin D

• fat

Multiple Choice

Why is calcium important? READ ALL THE CHOICES CAREFULLY before answering.

• helps regulate your heart beat

• helps your muscles contract

• helps your blood clot

• ALL OF THESE

SUPPLY

​Blood Cells are made in your bone marrow

​ON YOUR NOTES:

Larger bones of the skeletal system contain bone marrow. Red marrow is responsible for production of red blood cells that are responsible for carrying oxygen to body tissues. White blood cells are also produced that are important for the body's immune system.

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Multiple Choice

Why are red blood cells important?

• They fight disease

• They carry oxygen to all your body cells

• They help repair tissues

• They support your organs

Multiple Choice

What types of cells are produced in your bone marrow?

• blood cells

• epithelial cells

• muscle cells

• nerve cells

Bones provide SHAPE & SUPPORT

​ON YOUR NOTES:

The skeletal system provides a framework and attachment points for muscles, tendons, ligaments, skin and organs. Bones such as the femur in the legs bear the weight of the upper body. The spinal column makes the body straight and supports the head.

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Multiple Choice

Ligaments attach muscles to bone.

• True

• False

Multiple Choice

Which bone(s) helps your body stand up straight and supports your head?

• femur

• skull

• spinal column

• tendons

MOVEMENT

Without your bones and muscles you could not move your body

The skeletal system provides a framework for muscles to attach. When they contract they pull on the bones of the skeleton, which act like levers to create movement. Leg bones come together at the knee to form a hinge joint that enables the knee to move back and forth. The hip has a ball and socket joint that allows for movement in multiple directions.

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​ON YOUR NOTES:

Multiple Choice

Your body moves when muscles contract and pull on the bones of your skeleton at joints.

• True

• False

Review

Why we need our bones:

1. Protection

2. Storage

3. Supply

4. Shape and Support

5. Movement

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Multiple Choice

What is the most important thing you can do to keep your joints healthy?

• Healthy Diet

• Exercise

• Get 8 hours of sleep each night

• Drink lots of water