The Skeleton and Muscles

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Give a note on cartilage?(4p)
- Made up of fibrous protein- collagen.
- Found in ear (pinna), nose, trachea and discs between vertebrae (flexible bone).
- Slow to heal due to it lacking in blood vessels and nerves.
- Cartilage covers the ends of bones and act as shock absorbers and reduce/prevent friction.
What is cartilage made up of?

Cartilage is made up of a fibrous protein- collagen.
Where is cartilage found in? (body parts 4)
- Ear (pinna)
- Nose
- Trachea
- Discs between vertebrae
What part of the ear is made up of cartilage?

Ear (pinna).
Where is the pinna in the body?

In ear.
Why is cartilage slow to heal?

Cartilage is slow to heal due to it lacking in blood vessels and nerves.
What does the lack of blood vessels and nerves mean for cartilage?

Cartilage is slow to heal due to its lack of blood vessel and nerves.
What part of bones does cartilage cover?

Cartilage covers the ends of bones to act as shock absorbers and to prevent/reduce friction.
Why do cartilage cover the ends of bones?

Act as shock absorbers and prevent/reduce friction.
What acts as shock absorbers and prevents friction on the ends of bones?

Cartilage
What does cartilage do?

Acts as shock absorber and prevents/reduces friction.
Name an example of a king bone? (6)
- Femur
- Tibia
- Fibula
- Humerus
- Radius
- Ulna
What two parts are long bones divided into?
- External structure
- Internal structure
What are the parts of the external structure of the long bone?
- Cartilage (2)
- Epiphysis (2) ends
- Diaphysis. main shaft
What are the ends of the long bone called?

Epiphysis
What is the main shaft of the long bone called?

Diaphysis
What are the parts of the internal structure of the long bone?
- Spongy bone
- Red marrow
- Growth plate
- Medullary cavity (hollow)
- Yellow marrow
- Compact bone
- Periosteum
Give a note on compact bone? (4p)
- Composed of living and non-living components.
- Living: Osteoblasts (bone forming cells)
- Non-living: Calcium, protein (collagen)
- Function of calcium- provides strength
- Function of protein- provides a little flexibility.
What is compact bone composed of?
- Composed of living and non-living components.
- Living: Osteoblasts (bone forming cells)
- Non-living: calcium, protein (collagen)
What are the living and non-living components of compact bone?
- Living: Osteoblasts (bone forming cells)
- Non-living: calcium, protein (collagen)
What is the function of the non-living components in compact bone?
- Calcium provides strength
- Protein provides a little flexibility

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jacquelineglynn

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The Skeleton and Muscles

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Updated

2022-10-24T20:01:18Z