- Created by: Blake
- Created on: 30-04-18 08:02
1. What is meant by the term homeostatis
- The absorption of blood in the body
- The process of converting glucose and carbon dioxide into oxygen and water to breathe
- The maintenance of a constant internal environment
- The detection of stimuli in the external enviroment
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Other questions in this quiz
2. Why do our blood vessels widen when we are hot?
- So that very little sweat gets produced
- So that more blood flows near the surface of the skin, leading to energy being transferred into the surroundings, which cools you down
- Trick question: Our blood constricts when we are hot
- So the insulating layer of air gets trapped
3. Why do we sweat a lot when we are cold?
- Sweating triggers the effectors in the body to shiver
- It causes our hairs to stand up and trap in insulating air
- Trick question: The body produces very little sweat when we are cold as the sweat gets rid of some heat in the body when it evaporates and the body needs heat at that moment
- Because sweating generates heat in the body
4. Why does urine go dark in colour on a hot day and/or when you're exercising?
- Because blood is not flowing as much in the body in those conditions
- The kidneys do not excrete as much urine in those conditions
- It is more concentrated as water has been lost from sweating (being hot) and breathing a lot more (exercising)
- Trick question: Urine is paler in colour on a hot day and/or when you're exercising
5. Why does the human body's temperature need to be kept around 37 degrees Celsius?
- The optimum temperature for many enzymes controlling reactions in the human body is 37 degrees Celsuis
- So that the atmosphere in the air gives us oxygen