PRIOR ANNULARIS
\pɹˈa͡ɪəɹ ɐnjˈʊlɑːɹˌɪs], \pɹˈaɪəɹ ɐnjˈʊlɑːɹˌɪs], \p_ɹ_ˈaɪ_ə_ɹ ɐ_n_j_ˈʊ_l_ɑː_ɹ_ˌɪ_s]\
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Interos'seus quartus of Winslow. An internal interosseous muscle which arises from the outside of the metacarpal bone of the ring-finger, and is inserted into the outside of the tendon on the back of the ring-finger. Its use is to draw the ring-finger outwards.
By Robley Dunglison
