Figure 5.

Passive Tibial Movements of Isolated Legs of Pseudoproscopia scabra

(A) On release from either flexed (crosses) or extended (circles) angles, the tibia of intact hind legs (black curves) moved passively toward a midpoint resting range. Ablation of both the extensor and flexor tibiae muscles and their apodemes (gray curves and symbols) led to a marked reduction in passive extensions (crosses) but had little effect on passive flexions (circles). Insets show the starting position of the tibia (black) relative to the femur (gray) and the direction of resulting movement (curved arrows).

(B) The resting angles of hind legs measured 10 s later (symbols and color coding as in A) reflect these differences as described in the Results. Individual legs were always more flexed after flexion than after extension (see Table S2).

(C) Corresponding data for middle legs. Symbols and color coding are as in (A).

See also Table S2.