Glossary
A
- Artery
- Any of the blood vessels that carry blood away from the heart.
- Asthma
- A respiratory condition characterised by difficulty in breathing, constriction in the chest and often coughing or gasping.
- Atria
- The first chamber on either side of the heart which receives blood from the veins.
- Atypia
- An abnormality of a cell.
- Aura
- The second stage of a migraine. Symptoms include visual disturbances, speech problems, numbness or tingling on one side.
- Autonomic
- The part of the nervous system responsible for the control of automatic bodily functions.
- Axon
- The primary fibre of a nerve cell; the axon is the main route of transmission of impulses along a nerve.
