Homeostasis

Question 1

What is Homeostasis?

Answer 1

• The ability or tendency of an organism or a cell to maintain internal equilibrium by adjusting its physiological processes.
• Coordinated response to a stimulus/change to ‘survive

Question 2

What is the Negative Feedback Example

Answer 2

A negative feedback is when a variable triggers a counter response, in order to keep the bodies regular temperature.

-Thermoregulation- Stimulus > Sensor > Contro > Effector

When there is a high temperature (Hot):

• Sweat is released from the sweat glands
• Hairs lay flat
• Vasodilation to lose heat

When there is a low temperature (Cold):

• Shivering due to muscle contraction for heat
• Hair stand up
• Vasoconstriction to keep the heat in.

Question 3

What is a Positive feedback example

Answer 3

A negative feedback is when instead of having a counter response to a variable, you intensify the variable. An example of this is:
-Childbirth, when your body is producing oxytocin that makes your body contract.