Cellular organelle
Recently it has become apparent that calcium stored in cellular organelles can also be an important regulator of cellular functions. The endoplasmic reticulum (ER) is usually the largest store of releasable calcium in the cell.  In skeletal muscle cells, for example, the release of … calcium from the smooth ER triggers muscle contraction.   Source: http://encarta.msn.com/encyclopedia_761587444/Endoplasmic_Reticulum.html. 1 Healthy Foods With Good Sources of Calcium For strong, healthy bones, it's important to consume the right amount of calcium per day. 2  This is about 1,000 milligrams for adults, 1,200 for seniors age 51 or older and any…. 3  The Five Major Parts of the Brain At its most basic, the brain controls the body. The organelle that stores calcium (Ca2+) in striated muscle cells and is involved in steroid hormone metabolism is the ________________. a. endoplasmic reticulum. b. lysosome.  The endoplasmic reticulum (ER) is a type of organelle in the cells of eukaryotic organisms that forms an interconnected network of flattened, membrane-enclosed sacs or tube like structures known as cisternae. The rough endoplasmic reticulum is especially prominent in cells such as hepatocytes. The smooth endoplasmic reticulum lacks ribosomes and functions in lipid metabolism, carbohydrate metabolism, and detoxification of drugs. 1 Calcium Deficiency: What You Need to Know Calcium is the most abundant mineral in the body and plays a critical role in bone health. 2  A calcium-deficient diet can cause bone density and mass to decrease leading to rap…. 1 Healthy Foods With Good Sources of Calcium For strong, healthy bones, it's important to consume the right amount of calcium per day. 2  This is about 1,000 milligrams for adults, 1,200 for seniors age 51 or older and any…. 3  The Five Major Parts of the Brain At its most basic, the brain controls the body. Organelle: (SER) Smooth Endoplasmic reticulum Function: Synthesizes fatty acids and steroids, stores and releases calcium ions in muscle cells.  The endoplasmic reticulum and calcium storage. Koch GL(1). Author information: (1)Laboratory of Molecular Biology, Cambridge, UK. Calcium storage is one of the functions commonly attributed to the endoplasmic reticulum (ER) in nonmuscle cells. Several recent studies have added support to this concept. The alternative view, that the physiologically important calcium store is a specialised organelle, the calciosome, is not supported by these observations. Recent evidence also suggests that ER calcium might be important in ER structure and in the retention of the luminal ER proteins. (1)Laboratory of Molecular Biology, Cambridge, UK. Calcium storage is one of the functions commonly attributed to the endoplasmic reticulum (ER) in nonmuscle cells. Several recent studies have added support to this concept. The sarcoplasmic reticulum stores large amounts of calcium because calcium, when released, aids in muscle contraction. Skeletal muscles release calcium and contract when they receive signals from neurons, or nerve cells, that control muscle movement.  The vacuoles, the endoplasmic reticulum and the cell wall constitute storage compartments for mobilizable calcium. In contrast, the role of organelles surrounded by a double membrane (e.g. mitochondria, chloroplasts and nuclei) is more complex. Here, we review experimental data showing that these organelles harbor calcium-dependent biological processes.
http://www.ncbi.nlm.nih.gov/pubmed/11162742 http://www.answers.com/Q/What_organelle_stores_calcium_in_muscle_cells http://www.chegg.com/homework-help/questions-and-answers/organelle-stores-calcium-ca2-striated-muscle-cells-involved-steroid-hormone-metabolism---e-q1379952 https://en.wikipedia.org/wiki/Sarcoplasmic_reticulum http://www.answers.com/Q/What_organelle_stores_calcium_in_muscle_cells https://quizlet.com/19562984/the-human-cell-and-organelles-flash-cards/ http://www.ncbi.nlm.nih.gov/pubmed/2085319 http://www.ncbi.nlm.nih.gov/pubmed/2085319 http://education.seattlepi.com/causes-release-calcium-endoplasmic-reticulum-4091.html http://www.sciencedirect.com/science/article/pii/S0167488906002990
what organelle stores calcium