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Epithelial cells come in a variety of shapes that relate to their function in development or physiology. How epithelial cells adopt particular shapes is poorly understood, but it must involve spatial control of the actin cytoskeleton, which is central to cell shape in all plant cells. Apocrine cells, showing apical snouts towards the lumen.
Structure of a plant cell. Plant cells are the cells present in green plants, photosynthetic eukaryotes of the kingdom Plantae.Their distinctive features include primary cell walls containing cellulose, hemicelluloses and pectin, the presence of plastids with the capability to perform photosynthesis and store starch, a large vacuole that regulates turgor pressure, the absence of flagella or ...
The apoplast is the extracellular space outside of plant cell membranes, especially the fluid-filled cell walls of adjacent cells where water and dissolved material can flow and diffuse freely. Fluid and material flows occurring in any extracellular space are called apoplastic flow or apoplastic transport.
Palisade cells contain a high concentration of chloroplasts, particularly in the upper portion of the cell, making them the primary site of photosynthesis in the leaves of plants that contain them. Their vacuole also aids in this function: it is large and central, pushing the chloroplasts to the edge of the cell, maximising the absorption of ...
The cells of the epidermis are structurally and functionally variable. Most plants have an epidermis that is a single cell layer thick. Some plants like Ficus elastica and Peperomia, which have a periclinal cellular division within the protoderm of the leaves, have an epidermis with multiple cell layers. Epidermal cells are tightly linked to ...
Apophysis (spider), an outgrowth of the exoskeleton in spiders and other arachnids; In botany, an outgrowth or enlargement of an organ such as a plant stem; Apophysis (software), a fractal flame generating program for Microsoft Windows; Apophysis (geology), a discordant offshoot from another body, such as a sill, dike, or pluton
The epiphyseal plate, epiphysial plate, physis, or growth plate is a hyaline cartilage plate in the metaphysis at each end of a long bone.It is the part of a long bone where new bone growth takes place; that is, the whole bone is alive, with maintenance remodeling throughout its existing bone tissue, but the growth plate is the place where the long bone grows longer (adds length).
However, it serves as an indicator of the boundary between the epiphysis and diaphysis. [4] References This page was last edited on 30 July 2024, at ...