Definitions around Homeostasis
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| What is Homeostasis | It is the control of an organism's internal environment in order to maintain optimal conditions
🗑
|
||||
| What causes Homeostasis? | Stimuli (change)
🗑
|
||||
| How does Homeostasis work? | Sensory perceptions or senses pick up change in external environment. Nerves in skin and Hypothalamus pick up changes in internal environment.
🗑
|
||||
| What factors does Homeostasis affect? | Temperature, Oxygen, Water, Glucose, pH (acidity in H+ ions), Salts.
🗑
|
||||
| What factors affect it? | Health and how well your body copes with change
🗑
|
||||
| What is it's significance or importance? | The factors would become uncontrolled and lead to death.
🗑
|
||||
| What does "optimal" mean | Best or most favourable
🗑
|
||||
| What is an optimal environment? | The most favourable conditions for your body.
🗑
|
||||
| Name the standard response and the 5 stages | Stimulus - Sensor - Communication - Effectors - Response
🗑
|
||||
| What is negative feedback? | When the response to the stimulus has been finalised and optimal conditions have been reached, the sensor sends a message to the control centre - effectors - and these are turned off and conditions return to normal.
🗑
|
||||
| What is positive feedback? | This is an increase in change away from optimal conditions - the homeostatic mechanism is not switched off and therefore the effectors keep doing their job, putting things out of balance.
🗑
|
||||
| Give an example of positive feedback that is beneficial? | Labour and birth - Oxytocin is the body's response to labour and stimulates powerful contractions and allows for birth. It increases as labour progresses.
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
saltpopcorn
Popular Biology sets