23. The triceps (p. 166). (_a_) The long head of the triceps (Fig. 77,
_i_; Fig. 75, _g_). Find first its medial border and separate it from
the medial head. Note the union of its lateral surface with the dorsal
border of the lateral head by strong fascia, and then cut the fascia.
(_b_) The lateral head (Fig. 75, _h_).
(_c_) The medial head (Fig. 79, _g_, _h_, and _j_).