controls homeostasis and pituitary gland

Glucose, water and ions.

Millions of interconnected neurones

Chemical messengers that travel in the blood to target organs.

At the back, responsible for muscle contraction & balance

It makes the liver convert glycogen to glucose. This causes the blood glucose level to increase.

Auxin diffuses to the dark/shaded side of plant. This causes the cells to grow faster on that side (elongate) which causes the shoot to bend twards th...

Computers can give a more precise reaction time because they remove human error.Computers can record the reaction time to a millisecond so more accura...

Age, drugs e.g. caffeine or gender

When the pancreas produces little or no insulin.

Contains same hormones as the pill. Patch is stuck under the skin (5cm x 5cm). Each patch lasts a week.

Carries impulses from the receptors on the retina to the brain

Outer transparent layer, bends/refracts light into the eye