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Q: Why is the second process of urine formation called re-absorption and not absorption?
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When the kidneys return salts and water to the blood it is called?

Reabsorption via a process called "secretion".


What is reabsorbtion?

In renal physiology, reabsorption or tubular reabsorption is the process by which the nephron removes water and solutes from the tubular fluid (pre-urine) and returns them to the circulating blood. It is called reabsorption (and not absorption) because these substances have already been absorbed once (particularly in the intestines) and the body is reclaiming them from a postglomerular fluid stream that is on its way to becoming urine (that is, they will soon be lost to the urine unless they are reabsorbed from the tubule into the peritubular capillaries. Wiki


The reabsorption of a neurotransmitter after it has transmitted a neural impulse is called?

Reuptake


What is the process of egg formation called?

The process of an egg formation is called ogenesis.


What are the 3 steps for urine formation?

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.


What is the process by which nutrient molecules are moved into the bloodstream called?

into your small intestine.


What is the process of soil formation called?

The process is known as Pedogenesis. Erosion and siltation are two of the mechanisms that contribute to pedogenesis.


What is the process that makes food available to your body is called what?

Absorption.


What is the process for the formation of a cell called?

Mitosis


The process of tumor formation is called what?

Neoplasia


The process by which food is broken down into absorbable components is called?

absorption.


What is the term that describes the process in which nutrients pass through the walls of the gastrointestinal tract?

The answers given here are wrong.The correct answer is assimilation.