Fig. 14. Schematic representation of rod spherules and cone pedicles with associated synapses. Rod bipolar cells, a midget cone bipolar cell, and a horizontal cell form invaginating synapses with the rods and cones. A flat cone bipolar cell forms flat synapses onto the cone pedicles. Gap junctions are also present between the rod spherules and cone pedicles. (Hogan MJ, Alvarado JA, Weddell JE. Histology of the Human Eye. Philadelphia: WB Saunders, 1971.)