Ch 25, L4

The process where the body takes back substances from the filtrate in the kidney tubules into the blood.

The initial step in urine formation where water and small solutes are filtered from the blood into the Bowman's capsule.

The process where the kidney tubules actively transport substances from the blood into the filtrate to be excreted.

The movement of substances across the tubule epithelium and into the interstitial fluid, ultimately re-entering the bloodstream.

A type of transport that requires energy, usually in the form of ATP, to move substances across cell membranes.

A type of transport that does not require energy input, relying on concentration gradients or pressure differences.

The reabsorption of organic nutrients, such as glucose and amino acids, and certain ions through cotransport mechanisms at the apical membrane.

The process where water moves across the tubule epithelium through aquaporins due to osmotic gradients.

Facilitates water reabsorption in the kidneys by creating channels for water to pass through cell membranes.

Hormone that increases sodium reabsorption, leading to water retention and increased blood pressure.

Hormone that promotes the reabsorption of water in the kidneys, reducing urine volume and increasing blood pressure.

Hormone that reduces sodium reabsorption in the kidneys, increasing sodium and water excretion to lower blood pressure.

A hormone that promotes calcium reabsorption in the kidneys, increasing blood calcium levels.

Portion of the nephron where water can be reabsorbed, but solutes are generally not reabsorbed.

The section of the nephron where solutes are reabsorbed, but water reabsorption is limited.