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During Secretion Substances Move from?

Sophia Al-Mansoor • • 7 min read
During Secretion Substances Move from?

The secreted substances come from the blood in peritubular capillaries

peritubular capillaries
Anatomical terminology. In the renal system, peritubular capillaries are tiny blood vessels, supplied by the efferent arteriole, that travel alongside nephrons allowing reabsorption and secretion between blood and the inner lumen of the nephron.
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and pass through the interstitial fluid before going through the wall of the tubule (known as the transport epithelium) into the inside of the tubule (known as the lumen).

What direction do substances move during secretion?

They move in the direction from the blood stream into the tubules, which is in the reverse direction of reabsorption. These substances are K+ ions, H+ ions, NH4+ ions, creatinine, urea, some hormones, and some drugs.

What happens during secretion?

Waste Ions and Hydrogen Ions Secreted from the Blood Complete the Formation of Urine. ... At the same time, waste ions and hydrogen ions pass from the capillaries into the renal tubule. This process is called secretion. The secreted ions combine with the remaining filtrate and become urine.

Sophia Al-Mansoor
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Sophia Al-Mansoor

Sophia analyzes international trade, startup ecosystems, retail transformation, and supply chain logistics for modern digital publications.