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

Outer transparent layer, bends/refracts light into the eye

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

The time it takes to respond to a stimulus

The maintenance of a constant internal environment.

FSH and LH are given to a woman to help eggs mature and release. Eggs are then collected from a woman's ovaries. The eggs are fertilised in a lab with...

It is in charge of our complex behaviours, controls and coordinates everything we do breathing, sleeping, memory etc.

It is the master gland. It produces many hormones that regulate homeostasis e.g ADH, FSH

Carries impulses from the receptors on the retina to the brain

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

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

Made in the pituitary gland.Causes a egg to mature in one of the ovaries in a structure called a follicle.Stimulates the ovaries to produce oestrogen.

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...