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In botany, a cortex is an outer layer of a stem or root in a vascular plant, lying below the epidermis but outside of the vascular bundles. [1] The cortex is composed mostly of large thin-walled parenchyma cells of the ground tissue system and shows little to no structural differentiation. [ 2 ]
This is a list of roots, suffixes, and prefixes used in medical terminology, their meanings, and their etymologies.Most of them are combining forms in Neo-Latin and hence international scientific vocabulary.
Cerebellar cortex, the outer layer of the vertebrate cerebellum; Renal cortex, the outer portion of the kidney; Adrenal cortex, a portion of the adrenal gland; Cell cortex, the region of a cell directly underneath the membrane; Cortex (hair), the middle layer of a strand of hair; Cortex (botany), the outer portion of the stem or root of a plant
Adventitious roots arise out-of-sequence from the more usual root formation of branches of a primary root, and instead originate from the stem, branches, leaves, or old woody roots. They commonly occur in monocots and pteridophytes, but also in many dicots , such as clover ( Trifolium ), ivy ( Hedera ), strawberry ( Fragaria ) and willow ( Salix ).
Roots are specialized for the uptake of water, nutrients (including ions for proper function). [12] Similar to the endodermis, the exodermis contains very compact cells and is surrounded by a Casparian band, two features which are used to restrict the flow of water to a symplastic fashion (through the cytoplasm) rather than apoplastic fashion which (through the cell wall) flow through passages ...
The renal parenchyma is divided into two major structures: the outer renal cortex and the inner renal medulla. Grossly , these structures take the shape of 7 to 18 [ 12 ] cone-shaped renal lobes , each containing renal cortex surrounding a portion of medulla called a renal pyramid .
Parenchyma is a versatile ground tissue that generally constitutes the "filler" tissue in soft parts of plants. It forms, among other things, the cortex (outer region) and pith (central region) of stems, the cortex of roots, the mesophyll of leaves, the pulp of fruits, and the endosperm of seeds.
Root Cap – a cover or cap-like structure that protects the tip of root. Multiple root caps - several layers of root caps on a single root apex; seen in Pandanus sp. Root Pocket – a cap-like structure on the root-apex of some aquatic plants, which, unlike root-caps, doesn't reappear if removed somehow.