Proximal and Distal tubes
Secreation of (H+)in kidney
Simple cuboidal epithelia are found in areas of the body where secretion and absorption processes occur, such as in the kidney tubules, thyroid gland, and small ducts of various glands. They are characterized by a single layer of cube-shaped cells with a centrally located nucleus, which facilitates their specialized functions of secretion and absorption.
Secretion of substances into the filtrate occurs primarily in the distal convoluted tubule and the collecting duct in the nephron of the kidney. This process helps in regulating the composition of the urine by removing additional substances from the blood and adding them to the filtrate for excretion.
filtration, reabsorption and secretion
In the proximal tubule.
An example of secretion is the release of digestive enzymes by the pancreas into the small intestine to aid in the digestion of food.
Filtration, tubular reabsorption, tubular secretion
This type of epithelium is frequently found in glands, and the pancreas, where its function is secretion.
The most abundant blood vessels in the kidney are the peritubular capillaries, which surround the renal tubules and are involved in reabsorption and secretion of substances during the process of urine formation. These capillaries receive blood from the efferent arterioles of the glomerulus.
What particular secretion were you thinking of, you question is too general to answer.
Kidney failure, high blood pressure and abnormal heart rate.