Seborrheic dermatitis (Fig. 1) is a common chronic, superficial inflammatory disease of the scalp, face (especially the eyebrows and nasolabial folds), ears, and central chest, affecting 2% to 5% of the population. Clinically, the disease is characterized by thin erythematous plaques, often with a fine, greasy scale.eborrheic dermatitis (Fig. 1) is a common chronic, superficial inflammatory disease of the scalp, face (especially the eyebrows and nasolabial folds), ears, and central chest, affecting 2% to 5% of the population. Clinically, the disease is characterized by thin erythematous plaques, often with a fine, greasy scale.
the function of dendrons is that the dendron has dendrite on the end which receive impulses from receptor cells or other neurones which are then moved along the dendron to the axon.
A leading neurobiologist explores the fundamental function of dendritic spines in neural circuits by analyzing different aspects of their biology, including structure, development, motility, and plasticity. Most neurons in the brain are covered by dendritic spines, small protrusions that arise from dendrites, covering them like leaves on a tree. But a hundred and twenty years after spines were first described by RamÃ³n y Cajal, their function is still unclear.