Glossary beginning with H

h
Haematoma

A collection of clotted blood within the tissues which usually forms a swelling

Haemoglobin

A substance contained in red blood cells that is responsible for transporting oxygen around the body

Hormones

Large molecules manufactured in the body that act as "chemical messengers", instructing certain types of cell on what to do.

Synonyms: Hormone
Hypertrophy

Growth of lean tissue (particularly muscle) in response to training