2.5 Controlling conditions

Question 1

what 4 aspects of its internal environment does the body have to control?

Answer 1

water content

ion content

temperature

blood sugar level

Question 2

Why is it important that the body controls its internal temperature?

Answer 2

Enzymes in the body will not work properly (or at all) outside a narrow temperature range.

Question 3

Why is it important that the body controls its blood sugar level? what controls the level of sugar in the blood?

Answer 3

Sugar in the blood is the energy source for cells. Too much will lead to diabetes, too little and the body will not have enough energy. The pancreas.

Question 4

Why is it important that the body controls water content?

Answer 4

Loose water through breathing, sweat and urine, cells will become dehydrated if not enough.

Question 5

How do we loose ions. Who is particularly vulnerable to loss of ions?

Answer 5

Through sweat and urine. People in hot environments or doing a lot of exercise.