A muscle that controls the diameter of the pupil and how much light enters. The coloured part of the eye.

Produces glucagon and insulin which are involved in regulating glucose levels in the blood.

Male and female condom, diaphragm, spermicide

People are unable to focus on FAR objects. This occurs when the lens is the wrong SHAPE and refracts the light too much. The image is brought into foc...

A change in your environment than requires a response. e.g Light, sound, touch, pressure, pain, chemical or temperature.

Abstinence (not having sex), sterilisation which is having Fallopian tubes or sperm duct cut.

To only allow small soluble molecules (e.g. urea, water and ions) to move into the dialysis fluid, not large molecules like proteins.

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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...

MRI, Electrical stimulation, Studying patients with damage to their brain.

In a dialysis machine the patients blood flows between a partially permeable membrane surrounded by dialysis fluid. The dialysis fluid contains the sa...

Produced in the pituitary gland.Stimulates the release of an egg (ovulation) at day 14.

It is a system that allows you to react to your surroundings.