Question

why is the outer part of the kidney is red in colour.​

Answer 1

Answer:

Medullary rays penetrate the cortex, starting from the base of the pyramids (medulla), forming the pars radiate of the cortical lobules. In those lobules, the partes convulutae are located. The dark red spots are the renal corpuscle (glomeruli), the site of ultrafiltration.

Explanation:

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Answer 2

Medullary rays penetrate the cortex, starting from the base of the pyramids (medulla), forming the pars radiate of the cortical lobules. In those lobules, the partes convulutae are located. The dark red spots are the renal corpuscle (glomeruli), the site of ultrafiltration.