Difference between revisions of "CELL MEMBRANE-STRUCTURE"
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===== [[Summary Article|'''SUMMARY''']] ===== | ===== [[Summary Article|'''SUMMARY''']] ===== | ||
1. Semipermeable membrane whose permeability can be varied by numerous regulated ion channels and transport proteins embedded within. 2. Formed by <i>amphipathic</i> phospholipid molecules: possess a hydrophobic 'tail' end & hydrophilic 'head' end. | 1. Semipermeable membrane whose permeability can be varied by numerous regulated ion channels and transport proteins embedded within. | ||
<br/>2. Formed by <i>amphipathic</i> phospholipid molecules: possess a hydrophobic 'tail' end & hydrophilic 'head' end. | |||
<br/>3. In eukaryotes (cells containing nuclei), cell membranes contain various glycosphingolipids, sphingomyelin, cholesterol, phospholipids, phosphatidylcholine. | <br/>3. In eukaryotes (cells containing nuclei), cell membranes contain various glycosphingolipids, sphingomyelin, cholesterol, phospholipids, phosphatidylcholine. | ||
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==Reference(s)== | ==Reference(s)== | ||
Barrett, K.E., Barman, S.M | Barrett, K.E., Barman, S.M., Brooks, H.L., X, J. and Ganong, W.F. (2019). Ganong’s review of medical physiology. 26th ed. New York: Mcgraw-Hill Education | ||
[[Category:Cell Membrane]] | [[Category:Cell Membrane]] | ||
[[Category:Physiology]] | [[Category:Physiology]] | ||
Latest revision as of 02:30, 21 March 2023
SUMMARY
1. Semipermeable membrane whose permeability can be varied by numerous regulated ion channels and transport proteins embedded within.
2. Formed by amphipathic phospholipid molecules: possess a hydrophobic 'tail' end & hydrophilic 'head' end.
3. In eukaryotes (cells containing nuclei), cell membranes contain various glycosphingolipids, sphingomyelin, cholesterol, phospholipids, phosphatidylcholine.
OTHER PROPERTIES
4. The membrane is preferentially permiable to lipid-soluble substances, has low surface tension, and high electrical resistance.
5. The protein structure of membrances varies not only from cell to cell but also with the same cell.
Reference(s)
Barrett, K.E., Barman, S.M., Brooks, H.L., X, J. and Ganong, W.F. (2019). Ganong’s review of medical physiology. 26th ed. New York: Mcgraw-Hill Education
