Detect the stimulus or change in environment.

1) Menstruation-the uterus lining breaks down2) The uterus lining builds up again3) Ovulation-Around day 14 a egg is released from an ovary.4) The wal...

Insulin

Receptors send messages to the CNS via the sensory neurone.

A gap between two neurones.

Neurones that carry impulses from the sensory neurone to the motor neurone.

When the pancreas produces little or no insulin.

The maintenance of a constant internal environment.

Chemical messengers that travel in the blood to target organs.

Kidneys make urine by taking unwanted waste products out of your blood. They are involved in selective reabsorption.

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

Proteins (excess amino acids) cannot be stored by the body. Excess amino acids are converted to fats and carbohydrates. This occurs in the liver.