Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
|
Define homeostasis?
|
The maintenance of a constant internal environment.
|
|
|
What does homeostasis do?
|
It keeps your internal environment constant.
|
|
|
Examples of homeostasis?
|
temperature change amount of water in the air change, rainy day with a lot of water a sunny dry day without water.
|
|
|
Do your cells in your body change?
|
No your body keeps the environment inside your body almost the same, all the time. In your tissue fluid surrounding the cells, the temperature and amount of water are kept almost constant?
|
|
|
Why is homeostasis so important?
|
It helps your cells to work as efficiently as possible?
|
|
|
Define homeothermic?
|
Animals body temperature is independent of the temperature of the environment
|
|
|
Define endothermic
|
Animals which get their heat from within themselves.
|
|
|
Are mammals and birds homeothermic or ectothermic
|
Homeothermic
|
|
|
What optimum temperature do enzymes work at efficiently.
|
37 celcuis
|
|
|
what are the two names of skin on humans.
|
epidermis and dermis and one of the main organs that regulate heat.
|
|
|
What does the epidermis do?
|
protects the deeper layers.
|
|
|
If the temperature outside is zero Celsius what happens to a poikilothermic animal's metabolic rate?
|
slows down, and the animal is inactive.
|
|
|
If the temperature outside is zero Celsius what happens to a homeothermic animal's metabolic rate?
|
its cells produce heat by breaking down food through respiration. its body temperature stays high enough to keep its metabolism going.
|
|
|
If the temperature outside is twenty Celsius what happens to a homeothermic animal's metabolic rate?
|
because is body temperature does not change. it may be less active, to avoid overheating.
|
|
|
If the temperature outside is twenty Celsius what happens to a poikilothermic animal's metabolic rate?
|
Its metabolic rate speeds up, and it becomes active.
|
