Describe the process of bone growth
Cartilage layers are formed ontop of the Ephispesal plate -> Bottom layer calcifies, more layers continue to be formed, while bottom layers calcify
The calcification of bottom layers will outpace the formation of cartilage, meaning growth stops
What is the name of the shoulder blade bone?
Scapula
What is the most moveable joints in your body? What is the least moveable?
The most moveable joints you have in your body are the synovial joints
The least moveable joints you have in your body has
Side note: Cartilaginous joints are slightly moveable
What are the names of the Abnormal Curves your spine can have?
Scoliosis
Kyphosis
Lordosis
What is the purpose of the Vertebral Column?
To provide flexibility support for the trunk
Protects spinal cord
Why can’t irregular bones be classified as: short bones, long bones, or flat bones?
Due to their complex/unique shape
Where do sesamoid bones form?
In the tendons
Will lifting weights stunt growth in children or will it promote growth? Explain why or why not
No, children lifting weights will not stunt their growth.
It will however promote growth, as long as it is done appropriately. As bones are reactive to stress. When under stress, bones go through “bone remodelling”, where the bone becomes denser and mineralized.
What happens to your articular cartilage as you age?
As you age, your articular cartilage begins be worn down. Since the articular cartilage provides the smoothness in your bones when you move, as you age you will begin to hear more “creaking” as you move.
Do younger people have an epiphyseal plate or line?
Younger people have an epiphyseal plate, as you age, that plate turns to a line
*Growth plate closes
What happens if there is a fracture along an epiphyseal plate?
If an epiphyseal plate were to be fractured, then the cartilage around it would be damaged, stunting an individuals growth
What does the matrix that surrounds the osteosite consist of?
25% water
25% protein - Mainly collagen
50% mineral salts - Calcium carbonate and Calcium phosphate
Who is more likely to have denser bones, someone who is active or someone who is not active? Why?
The active individual is more likely to have denser bones.
This is due to the active person putting stress on their bones, promoting the development of calcium to surround their bones, making them denser.
Why are you able to wiggle your knee cap/patella while in a state of hip flexion?
This is possible as your knee cap/patella is not in a fixed position, it is attached via elasticity of tendons on both sides.
