Homeostsis

Question 1

What is homeostasis

Answer 1

it involves negative feedback loops that counteract changes of various properties from their target values known as set points. 

Question 2

Describe homeostasis in more depth

Answer 2

Homeostasis is maintained by control systems which detect and respond to changes in the internal environment

The control system has three basic components
Detector
Control centre
Effector

It is a dynamic process which allows constant readjustment of many physiological variables

Question 3

What are the steps in homeostasis?

Answer 3

1. Stimulus: produces a change in variable
2. Change detected by receptor (RECEPTOR)
3. Input: information sent along different pathway to (CONTROL CENTRE)
4. Open information sent along efferent pathway to (EFFECTOR)
5. Response of effective feedback to influence magnitude of stimulus and return is variable to homeostasis.
6. The imbalance is corrected

Question 4

What are some examples of positive feedback in homeostasis

Answer 4

Bleeding and childbirth

Question 5

What are some examples of negative feedback in homeostasis

Answer 5

Body temperature, hormone production, insulin production, blood pressure

Question 6

How does the menstrual cycle relate to homeostasis positive and negative feedback

Answer 6

positive: days 12 to 14
Negative: days 15 to 28

Question 7

What happens if homeostasis goes wrong?

Answer 7

It can lead to disruption or disease if not corrected

Question 8

How can homeostasis go wrong

Answer 8

The capacity to adapt to stress is not unlimited

If a change is excessive and happens rapidly,

The body can adapt outside the normal physiological range

Question 9

What can affect homeostasis

Answer 9

age,
infection,
external stimulus,
cell and tissue damage/regeneration