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 [ad-nek´sah] (L.)
appendages; accessory organs, as of the eye (adnex´a oc´uli) or uterus (adnex´a u´teri). adj., adj adnex´al.

accessory structures

parts accessory to the main organ or structure.
Synonym(s): accessory organs (1) , adnexa, annexa


Accessory or adjoining anatomical parts, as ovaries and fallopian tubes in relation to the uterus.

ad·nex′al adj.


Ancillary structures to main structure. Among health professionals, adnexa usually refers to the fallopian tubes, broad and round uterine ligaments and the ovaries, considered together. Other adnexae in the body include those of the skin (which are more commonly called skin adnexae and include the sweat and apocrine glands, hair and nails) and the eye (which include the eyelids, lacrimal apparatus and orbital tissue), for which the phrase accessory visual structures is more commonly used.


Appendage, ancillary part.
(1) Ovaries, fallopian tubes, associated uterine ligaments—broad, round.
(2) The ancillary glands and structures of the skin—e.g., hair follicles, sebaceous glands.


Parts accessory to an organ or structure, especially the uterus.
See also: appendage
Synonym(s): annexa.
[L. connected parts]


Adjoining parts of the body. The adnexa of the eyes are the lacrimal glands, the eyelids, and the lacrimal drainage system. The uterine adnexa are the FALLOPIAN TUBES and the OVARIES. The term is derived from the Latin annexere , to tie on.