Rosette (botany) arrangement has been confirmed to improve survival, help water balance, or protect the plant from cold injury are "Espeletia schultzii" and "Espeletia timotensis", both from the Andes. The rosette form is the structure, the relationship of the parts, and the variations within it, as shown in the following study from a herbarium: As form then, "rosette" is used to describe plants that perpetually grow as a rosette and the immature stage of plants such as some ferns. Rosette (botany) In botany, a rosette is a circular arrangement of leaves or of structures resembling leaves. In flowering plants, rosettes usually sit
Calyx of Held high frequency sound localization. This synapse has been described as the largest in the brain. The related endbulb of Held is also a large axon terminal smaller synapse (15-30 µm in diameter) found in other auditory brainstem structures, namely the cochlear nucleus. As with the calyces, these synapses promote fast, efficient information transfer. The calyx of Held holds vesicles containing glutamate on the presynaptic terminal, the vesicles are released upon stimulation (originating in the auditory system). The glutamate then binds to two known glutamate receptors, AMPA- and NMDA receptors. Commonly used in research due to its large size, the calyx