medullary ray

• Composant structurel du cortex rénal, formé de faisceaux de tubes droits et de canaux collecteurs qui s'étendent depuis la médullaire vers le cortex, jouant un rôle dans la concentration et le transport de l'urine.

A structural component found in the renal cortex of the kidney, consisting of straight tubules and collecting ducts that extend from the medulla into the cortex, playing a role in urine concentration and transport.

1. Plant anatomy structureC2formal

   A band of parenchyma cells in the stem of a plant that extends radially from the pith to the cortex, involved in lateral transport of nutrients.

   rayon médullaire

   • Medullary rays are visible in a cross-section of a tree trunk.
   • These rays help transport water and nutrients across the stem.
   • In woody plants, medullary rays can store starch.

2. Kidney structureC2formal

   A group of straight tubules and blood vessels that extend from the renal cortex into the medulla of the kidney.

   rayon médullaire (du rein)

   • The medullary ray contains loops of Henle and collecting ducts.
   • Damage to the medullary ray can affect kidney function.
   • Histologists study the medullary ray to understand urine concentration.