Stigma (botany) Stigma (botany) The stigma (plural: stigmata) is the receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. The stigma, together with the style and ovary comprises the pistil, which in turn is part of the gynoecium or female reproductive organ of a plant. The stigma forms the distal portion of the style or stylodia. The stigma is composed of , the cells which are receptive to pollen. These may be restricted to the apex of the style or, especially in wind pollinated species, cover a wide surface. The stigma receives pollen and it
Calyx of Held inhibitory effects. As a result of its role in stimulating the principal neurons, the primary function of the calyx of Held is to allow differentiation between temporal activation of the cochlear hair cells that are important in sound localization (interaural level detection). Interaural level detection is possible through the calyx system due to the large relative size of the GBCs, the calyx of Held, and the principal neurons. The neurons in the Lateral Superior Olive are especially important in discerning these interaural level changes. The large diameter size of the bushy cell axons allows the inhibitory signal produced by the