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Videos de Conceptos Relacionados

Factors Affecting Solubility04:01

Factors Affecting Solubility

Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
Feedback Regulation of Calcium Concentration01:27

Feedback Regulation of Calcium Concentration

Calcium is an essential signaling molecule required for various cellular functions. Calcium pumps and ion channels on cell and organellar membranes, such as those on the endoplasmic reticulum (ER), regulate calcium concentrations inside the cell. They remain closed, keeping the cytosolic calcium levels low at a resting state.
Various transmembrane receptors, such as G protein-coupled receptors (GPCRs), elicit a response to extracellular signals by increasing cytosolic calcium. Activated GPCRs...
Skeleton and Calcium Homeostasis01:21

Skeleton and Calcium Homeostasis

Calcium is not only the most abundant mineral in bone but also the most abundant mineral in the human body. Calcium ions are needed for bone mineralization, tooth health, heart rate regulation and strength of contraction, blood coagulation, the contraction of smooth and skeletal muscle cells, and the regulation of nerve impulse conduction. The average calcium level in the blood is about 10 mg/dL. When the body cannot maintain this level, a person will experience hypo or hypercalcemia.

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Video Experimental Relacionado

Updated: Jun 7, 2026

Direct Imaging of ER Calcium with Targeted-Esterase Induced Dye Loading (TED)
09:32

Direct Imaging of ER Calcium with Targeted-Esterase Induced Dye Loading (TED)

Published on: May 7, 2013

Redoxando el calcio del ER.

H Llewelyn Roderick1, Martin D Bootman

  • 1Laboratory for Molecular Signalling, The Babraham Institute, Babraham, Cambridge, CB2 4AT, United Kingdom.

Cell
|January 18, 2005
PubMed
Resumen

La liberación de calcio inducida por el inositol 1,4,5-trisfosfato (InsP3) es vital para las funciones celulares. Un nuevo estudio revela que el receptor InsP3 está regulado por el retículo endoplasmático.

Área de la Ciencia:

  • Biología celular Biología celular.
  • Fisiología molecular fisiología molecular.
  • La señalización del calcio.

Sus antecedentes:

  • La liberación de calcio mediada por inositol 1,4,5-trisfosfato (InsP3) desde el retículo endoplasmático (ER) es un proceso celular fundamental.
  • Esta vía de señalización regula las funciones celulares críticas a lo largo de la vida de un organismo.

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