Within a normally functioning kidney, red blood cells can be found in option A. the vasa recta.
Vasa recta are the kind of blood capillaries that stand up from the efferent arterioles, surrounding the loop of Henle of the juxtamedullary nephrons.
They're instantly venules and arterioles of the kidney. They deliver blood by way of coming into the medulla as straight arterioles, after which leave the medulla as immediate venules. The vasa recta lie close to Henle's loop. additionally, they shape hairpin loops inside the medulla.
The vasa recta or arteriolae rectal rents are peritubular capillaries in the kidneys which are situated parallel to and surrounding the loop of Henle. This term is a combination of the Latin words recta, because of this directly, and vasa, which pertains to blood vessels.
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