Sunday, 24 July 2016

8.9 Questions on the Skeletal and Muscular System

8.9 Students Brainstormed a number of questions that they had in regard to The Skeletal and Muscular system. 

It is our challenge to see if we can answer them.



  • Why do we have a coccyx bone?
  • Why is our nose made out of cartilage?
  • How many bones do we have?
  • Why do we grow?
  • How do bones heal?
  • Why do some of our bones crack?
  • Why does our collarbone break easily?
  • Why are bones bones?
  • Why are our bones white?
  • Why are our bones so fragile?
  • Is arthritis a myth?
  • Why do we blink?
  • What is double jointed?
  • Why do we sweat?
  • What makes our muscles grow?
  • How do the muscles in our pelvis grow/change during childbirth?
  • What does muscle look like?
  • What would happen if we didn’t have muscles?
  • Why do you have to stretch?
  • What causes bruising?

55 comments:

  1. How Many Bones do we Have?
    A fully grown human has 206 bones

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    1. but when you'r born you have 300 bones

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    2. That's really interesting Lachlan, can you explain why we have more bones when we are born?

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  2. Arthritis is not a myth

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    1. This comment has been removed by the author.

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    2. Hi Cale, you are correct, it is definitely not a myth - do you think you can you explain more about what Arthritis is?

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  3. what causes bruising?
    Bruising is caused when we bump into something. The reason it's purple/yellow/black is because it's a tear in the blood vessels under the skin.

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    1. Good Chantal. So what actually make the colour, when blood is red?

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  4. You cant get arthritis by cracking your knuckles and its not a myth.

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    1. Good Isaac. So why does cracking your knuckles - cause arthritis in our hands/knuckles?

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    2. it doesn't cause arthritis

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  5. What causes bruising?
    Bruises are the result of microscopic tears in blood vessels under the skin.

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  6. Why do we have a coccyx bone?
    we use to have a tail (coccyx bone) and used it for balance but when we learnt to walk we didn't need it

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    1. Good answer, but maybe you need to expand or think a little bit more - as it sounds like we are born with a tail and when we learn to walk as a baby it disappears. I know what yo mean... but you may need to a bit clearer in your explanation.

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  8. Why do we blink? Tear glands in the outside corners of your eyes are always making tears, and the blinking of your eyelids wipes them away. That keeps the front surfaces of your eyes moist and clean.

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    1. Good answer, but can you explain how it is linked to the Muscle system as well?

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  9. What is double jointed?
    Double Jointed is an unusual thing that happens in joints. It tends to occur in fingers,hands and some times arms and Legs.

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    1. good, but have you explained what it means? so it is unusual, but what is it?

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  10. Why do you have to stretch? When you sleep, your muscles lose tone and fluid tends to pool along your back. Stretching helps to massage fluid gently back into the normal position.

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    1. Great answer Lucy. Well done. I have learnt something here.

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  11. What is double jointed?
    having unusually flexible joints. usually in fingers, arms or legs

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    1. good Chantal, how flexible are they, before they are actually called double jointed.

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  12. Why do we sweat?
    it maintains our body temperature to cool us.

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  13. Why does our collarbone break easily? because its not very strong

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    1. Why is it not very strong?

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    2. Because your bones in-between your sternum and your shoulder are very slender and our ligaments are not very strong there

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    3. Because your bones in-between your sternum and your shoulder are very slender and our ligaments are not very strong there

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  14. Humans blink about 25 times a minute. Blinking is the eyes way of getting rid of the tear glands on your eyes.

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    1. Good answer, can you relate it to the mucsular system?

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  15. Q. How do bones heal?

    A. Your bones produce new cells and blood vessels that build up on both ends of the break and rebuild the bone.

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    1. Good answer Casey. So our bones are constantly breaking and mending? Do we feel this breaking and fixing at all?

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  17. why do we sweat?
    we sweat because is keeps us from over heating

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  18. Why are our bones white?
    Our teeth and bones are hard. They are made of calcium phosphate, they are white due to their chemical composition.

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    1. Good answer Abby. Calcium phosphate is a white compound.

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  19. What happens if we didn't have muscles? If you didn't have muscles, you would not be able to move at all.

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  20. What makes our muscles grow?
    it's when you lift weights it tears the muscle fibres, then the muscles heal.

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    Replies
    1. Good answer Hayden. So exercises helps us build our muscles. So Is that why we sometimes have sore muscles after exercising?

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  21. why do we have more bones as a baby
    babies have more bones because as they grow many of our bones fuse together and form one bone instead of two

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  23. why does our collarbone break easily
    Because your bones in-between your sternum and your shoulder are very slender and our ligaments are not very strong there

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  24. Because if your muscles are not warm before you start exercising then they will not be able to move as flexibly as when they are warm and you are more likely to pull or strain a muscle.

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  25. Because if your muscles are not warm before you start exercising then they will not be able to move as flexibly as when they are warm and you are more likely to pull or strain a muscle.

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  26. Why do you have to stretch?
    When you sleep, your muscles lose tone and the fluids usually gathers along your back. Stretching helps to get the fluids moving into the normal position.

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  27. Is arthritis a myth?
    Arthritis is not a myth. Popping your knuckles will cause arthritis and is very common. Arthritis is an inflammation of the joints. It can affects 1 or more joints.There are more than 100 different types of arthritis. ✌️

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    1. I didnt now there were that many types of arthritis!

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  28. What makes our muscles grow?
    The growth of our muscles occurs when the rate of our muscle protein synthesis is larger than the rate of our muscle protein breakdown.

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