reabsorption

/'ri:əb'sɔ:pʃn/

Thân thiện

The kidneys perform reabsorption of water and nutrients from the filtrate.

Definition

Noun: 1. The process of absorbing something again: Specifically, in biological and physiological contexts, it refers to the process by which a substance, once secreted or filtered out, is taken back into the tissue, cells, or bloodstream. 2. The organic process of lysis and assimilation: The biological process where the substance of a differentiated structure produced by the body is broken down (lysis) and its components are taken up and reused (assimilation).

Usage and Examples

• General/Biological Context:
  • The reabsorption of water in the kidneys is crucial for maintaining the body's fluid balance.
  • After the initial secretion, the reabsorption of certain ions occurs in the renal tubules.
• Scientific/Medical Context:
  • The doctor explained that the patient's condition was due to impaired calcium reabsorption in the bones.
  • Studies focus on the mechanisms of nutrient reabsorption in the small intestine.

Advanced Usage

• "Tubular reabsorption": A specific term in nephrology referring to the process in the kidney where useful substances are reclaimed from the filtrate back into the blood.
  • Tubular reabsorption ensures that essential molecules like glucose are not lost in urine.
• "Selective reabsorption": The process where only specific substances are absorbed again, often based on the body's current needs.
  • Selective reabsorption in the nephron is a key function of the kidney.

Variants and Related Words

• Reabsorb (verb): To absorb again.
  • The lining of the gut reabsorbs water from the digestive material.
• Reabsorptive (adjective): Relating to or involved in reabsorption.
  • The reabsorptive capacity of the renal tubules can be measured.

Synonyms

• Resorption: Often used interchangeably in biological contexts, especially regarding bone or tissue.
• Recovery (in a specific technical sense): The regaining of a substance.
• Reuptake: Commonly used in neuroscience for the reabsorption of neurotransmitters.

Antonyms

• Secretion: The process of releasing a substance from a cell or gland.
• Excretion: The process of eliminating waste from the body.
• Filtration: The process of passing a fluid through a filter, often preceding reabsorption.

Related Phrases and Compounds

• "Rate of reabsorption": The speed or efficiency at which reabsorption occurs.
  • The medication affects the rate of sodium reabsorption.
• "Reabsorption site": The specific location in an organ where reabsorption takes place.
  • The proximal convoluted tubule is a major reabsorption site in the kidney.

Học thuật

Noun

1. the organic process in which the substance of some differentiated structure that has been produced by the body undergoes lysis and assimilation

Từ đồng nghĩa

• resorption