Reinforcement, Revision and Extension Worksheets

How do bones grow?

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01

Let's review what we know!

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What is a main function of bones in the body?

to store energy

To produce hormones

To support and protect organs

02

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Which cells are responsible for bone formation?

Osteocytes

Osteoclasts

Osteoblasts

03

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Where does bone growth primarily occur?

In the bone marrow

At the surface of bones

At the growth plate near the epiphysis

Great job! let's make sure we understand the main job of bones is to protect and support organs cells that are responsible for making new bone tissue are osteoblasts growth in long bones happens at the growth plates let's learn how that happens!

How do bones grow?

How do bones grow?

Long bones grow through a process called ossification. it begins with cartilage which is gradually replaced by bone. osteoblasts are the cells responsible for creating new bone while osteoclasts break down old bone tissue Growth occurs at the epiphyseal plate, also know as the growth plate, where cartillage is turned into bone until the bone reaches its full length.

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Let's review some key terms

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What is ossification?

The breakdown of bone

The function of osteocytes

The process of bone growth from cartillage

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This gif is showing cartilage turning into bone at a very high speed. What is this process called?

growth plate

osteoblasts

ossification

Great! Let's review the main ideas!

Bones grow through ossification. Here's how it works:

• Catillage Model: bones start as cartilage, a softer tissue that serves as a blueprint for bones.
• Osteoblasts: These cells create new bone material by replacing the carilage with bone tissue.
• Osteoclasts: They break down old bone to make way for new growth; ensuring the bone remains strong and healthy
• Growth Plates: found at the ends of long bones (the epiphysis), these areas are where new bone cells are added.

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quick questions!

select the correct answer

What do osteoclasts do?

break down bone tissue

build new bone tissue

exactly! great job!

exactly! osteaclasts break down old bone tissue. This process is important for maintaining healthy bone because it allows for the removal of old damaged bone, making way for new bone!

show me how!

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Lifestyle choices and diet can influence the balance between osteoblasts and osteoclasts in bone development. There are essential nutrients needed for strong bones! can you think of one that has the most impact on bone development?

Calcium

Protein

Vitamin C

Correct! calcium is so important for healthy bones in babies and adults!

What food do you think has the most calcium?

Correct!

Milk is a great source of calcium which is vital for building strong bones. Calcium helps to harden bone tissue through osteoblasts! Other calcium rich food include yogurt, cheese, and leafy greens like spinach!

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CERTIFICATEACHIEVEMENT

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You are now an expert at bone growth!!!

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Try again! Proteins are not minerals!

Try again! Fruits are full of important vitamins, but calcium is not one of them!

Good try! Although eggs do have calcium, they don't have the highest amount. Try again!