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SecretionSecretion is the process by which substances move into the distal and collecting tubules from blood in the capillaries around these tubules.
Tubular secretion
bowman capsule or tubular secretions
to produce sperms by the process of spermatogenesis
reabsorption of most of the required substances from the filtrate
reabsorption of most of the required substances from the filtrate
Spermatogenesis is the process in which the male germ cells undergo meiosis. The process begins to take place in the testes inside the seminiferous tubules.
Filtration As blood courses through the glomeruli, much of its fluid, containing both useful chemicals and dissolved waste materials, soaks out of the blood through the membranes (by osmosis and diffusion) where it is filtered and then flows into the Bowman's capsule. This process is called glomerular filtration Reabsorption by definition, is the movement of substances out of the renal tubules back into the blood capillaries located around the tubules (called the peritubular copillaries). Substances reabsorbed are water, glucose and other nutrients, and sodium (Na+) and other ions Secretion In this respect, secretion is reabsorption in reverse. Whereas reabsorption moves substances out of the tubules and into the blood, secretion moves substances out of the blood and into the tubules where they mix with the water and other wastes and are converted into urine.
it helps to serve counter current activity at the process of urine formation.
Spermatozoa, also known as sperm cells, are developed in the seminiferous tubules within the testes of the male reproductive system. Spermatogenesis, the process of sperm cell development, occurs in the seminiferous tubules through a series of mitotic and meiotic divisions.
Selective reabsorption
transverse tubules transverse tubules