Homeostasis

Question 1

What is homeostasis

Answer 1

It is the body’s way of maintaining its internal environment. This is important as enzymes, cells and biochemistry in the body can be denatured, die or be off respectively if not in the optimum temperature. It uses receptors to detect changes in the internal environment and effectors such as muscles or hormones to correct the changes.

Question 2

What are the systems that are controlled by homeostasis?

Answer 2

Temperature
Oxygen and carbon dioxide concentration in the blood
Sugar concentration in the blood
The pH and water levels in the blood
Calcium, sodium and other ion concentration

Question 3

Why does our breathing rate increase when we exercise

Answer 3

Because we need more oxygen for respiration in our system than when we are not exercising. Also an increased bloodflow around the body is needed

Question 4

What happens to out breathing at the end of exercise

Answer 4

It decreases as our body doesnt have to breathe out as much carbon dioxide

Question 5

What could happen if a panic attack is left untreated

Answer 5

A lot of carbon dioxide is being released during a panic attack so the low levels of CO2 can stop the body from breathing when back to normal. A paper bag should be given so that levels of carbon dioxide can be maintained and the body can go back to the normal breathing process after.

Question 6

Why do we shiver

Answer 6

When the body is below its normal temperature, it starts shaking to generate heat and raise the body temperature back to normal.

Question 7

Why do we sweat

Answer 7

When the body goes above it normal temperature, it starts to release sweat from its sweat glands and gives out internal heat to try cool itself and evaporate the sweat.

Question 8

What is vasodilation

Answer 8

When your body is too hot, your blood vessels dilate, and move closer to the skin. The closer it is to the skin, the more heat can be released from the blood.

Question 9

What is vasoconstriction

Answer 9

When your body is too cold, your blood vessels constrict and move father away from the skin. The further away kit is from the skin, the less heat that is lost from the blood.

Question 10

What is pilorelaxation

Answer 10

Allows cooler air to move away the hotter air that would be trapped by the hair in the skin in attempts to cool you down

Question 11

What is piloerection

Answer 11

The body tries to trap insulating layers of air which is why the hair stand up and goosebumps form; in attempts to heat you up.