The Online Library of Knowledge

Human body

Human body A-Z

Adrenal glands   A pair of endocrine glands that produce hormones in response to stress, including adrenaline, which makes the heart beat faster, preparing the body for action.

Allergy   An abnormal reaction of the immune system to a harmless substance. During an allergic reaction, the body attacks a harmless substance as through it were a pathogen.

© 2020 Q-files Ltd. All rights reserved. Switch to Mobile