A.1 Communication

Question 1

What is homeostasis?

Answer 1

The maintenance of this internal environment within tolerable limits

Question 2

Regulation of blood pH

Answer 2

• 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

Question 3

Regulation of the heart

Answer 3

intrinsic and extrinsic exitation

Question 4

What is glycogen?

Answer 4

Storage form of glucose

Question 5

Regulation of blood glucose

Answer 5

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

Question 6

What does insulin do?

Answer 6

It decreases the amount of glucose in your blood system

Question 7

Regulation of body temperature

Answer 7

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

Question 8

Production of heat in the human body

Answer 8

• Physical activity increases body temperature due to heat production.

Question 9

Adenosine triphosphate (ATP)

Answer 9

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

Question 10

Ways to take temperature

Answer 10

• Mercury thermometer
• An ear thermistor
• Rectal probe

Question 11

Shell temperature

Answer 11

the temperature near the body surface (around the skin)

Question 12

Core temperature

Answer 12

normal and balanced temperature

Question 13

Heat transfer

Answer 13

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

Question 14

Conduction

Answer 14

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

Question 15

Convection

Answer 15

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

Question 16

Radiation

Answer 16

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

Question 17

Evaporation

Answer 17

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