A.1 Communication

The maintenance of this internal environment within tolerable limits

• normal pH in arterial blood in 7.35 (slightly alkaline) • Co2 concentration can and increase hydrogen and can make the blood more acidic • To maintain homeostasis the brain helps to monitor the pH blood level, if it starts to drop the respiratory system increases the rate of depth breathing to get rid of the access Co2

intrinsic and extrinsic exitation

Storage form of glucose

The pancreas secretes insulin and glucagon to control blood glucose concentration - insulin lowers blood sugar by helping cells absorb and store glucose - glucagon raises blood sugar by releasing stored glucose from the liver

It decreases the amount of glucose in your blood system

-maintains its temperature through a balance of heat production and heat loss - Hypothalamus helps

• Physical activity increases body temperature due to heat production.

A molecule that provide energy for muscle contraction when it is split

• Mercury thermometer • An ear thermistor • Rectal probe

the temperature near the body surface (around the skin)

normal and balanced temperature

• balance between heat production and heat loss to the environment • heat can be transferred away from the body via conduction, convection, radiation and evaporation

when heat moves from your warmer body to something cooler it’s touching, helping the body lose heat

• The more cold wind the more heat from your body will be removed more efficiently

without needing any physical contact. It’s how you lose heat to the air around you.

is when sweat turns into vapor, and in the process, it removes heat from your body, helping to cool you down.