Any substance that provokes an immune response.
Antidiuretic Hormone (ADH)
Also known as Vesopressin; secreted bu the Posterior Lobe of the Pituitary Gland. Stimulates water reabsorption by Kidney cells. Is a powerful Vasoconstrictor.
Antibody
A Protein secreted by B Lymphocytes with the capacity to react with specific Antigens.
Anterior
Antebrachium
Anatomical term for the Forearm.
Antagonist
The main Muscle to oppose a particular Movement.
Anovulatory Cycle
Ovarian Cycle in which Ovulation does not occur.
Ankylosing Spondylitis
A type of Arthritis of the Spine.