Specialized epithelial cells in collecting tubules and ducts include juxtaglomerular cells (regulating blood pressure), intercalated Type A cells (H+ elimination for pH regulation), intercalated Type B cells (bicarbonate elimination for pH regulation), and principal cells (responding to aldosterone and ADH for sodium, potassium, and water regulation). Each cell type plays a unique role in maintaining physiological homeostasis in the renal system.
The specialized epithelial cells associated with collecting tubules and ducts in the renal system encompass a variety of cell types, each contributing to distinct physiological functions.
Juxtaglomerular cells: These cells are primarily located in the afferent arterioles of the renal glomerulus. They play a vital role in regulating blood pressure by releasing the enzyme renin in response to changes in blood pressure or sodium concentration.
Intercalated Type A cells: Found in the collecting ducts, these cells are involved in maintaining blood pH by eliminating excess hydrogen ions (H+). This process helps regulate the body's acid-base balance.
Intercalated Type B cells: Also located in the collecting ducts, these cells play a role in acid-base balance by eliminating bicarbonate ions, contributing to the regulation of blood pH.
Principal cells: Present in the collecting tubules and ducts, principal cells respond to the hormones aldosterone and antidiuretic hormone (ADH). Aldosterone regulates sodium and potassium balance, influencing water retention, while ADH regulates water reabsorption.
The question probable may be:
Which of the following are specialized epithelial cells associated with collecting tubules and ducts? Check all that apply.
Juxtagiomerular cells , which are responsive to the hormone renin in regulating blood pressure.
intercalated type A cells , which eliminate H+ to help regulate blood ph.
Intercalated type B cells , which eliminate bicarbonate to help regulate blood pH.
Principal cells , which are responsive to the hormones aldosterone and ADH in regulating sodium , potassium and water.