Examlex
In vitro fertilization refers to conception by an unmarried couple.
Kidney Medulla
The kidney medulla is the innermost part of the kidney, composed of renal pyramids, and is responsible for concentrating urine and maintaining water and salt balance in the body.
Vasa Recta
refers to the series of straight blood vessels in the kidney that serve a crucial role in the process of urine concentration.
Countercurrent Mechanism
A mechanism of exchange in which fluids flow in opposite directions, enhancing the transfer of heat or solutes, often found in biological systems like kidneys and fish gills.
Vasa Recta
The network of capillaries surrounding the loop of Henle in the kidney, playing a crucial role in the concentration of urine.
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