Acetabulum

L. acetum = vinegar, L. bulum = a suffix signifying the instrument. This cup-shaped part of the hip was thought to resemble a small vinegar cruet of roman times.

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Acetylcholine

L. acetum = vinegar, and Gr. chole = bile. From acetum came acetic and acetyl; from chole came choline. It is the acetyl derivation of choline.

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Adrenal

L. ad = to, ren = kidney. The adrenal gland lies above the kidney and is also called the suprarenal gland.

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Afferent

L. ad/af = to, ferre = to carry. Used for a variety of structures carrying material or impulses to a center or to an organ.

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Ala

L. ala = wing. It is believed that ala  is an eroded form of axilla. See also Scapula alata.

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