Also known as: AA.
AA has various meanings in the Healthcare category. Discover the full forms, definitions, and usage contexts of AA in Healthcare.
Compound containing both an amino and a carboxylic acid group.The NH2 group. For more information see Amino Acids.
HealthcareThe second section of the aorta following the ascending aorta. As it continues from the heart, it gives off the brachiocephalic trunk, and the left common carotid and subclavian arteries. The brachiocephalic trunk splits to form the right subclavian and the right common carotid arteries, which supply blood to the right arm and the right side of the neck and head.
HealthcareFirst section of the aorta as it leaves the heart and turns upwards. Compare descending aorta
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