BIO 3422 Lecture 1: Exam 1.1 Notes
16 Dec 2017
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Document Summary
The intracellular fluid (icf) is all the fluid inside a cell and is separated from the ecf by the selectively permeable plasma membrane. The icf has many compartments, but the entirety can be considered 1. This makes up 67% of total body water. The extracellular fluid (ecf) is all the fluid outside the cell membrane and comprises 1/3 of total body water. Interstitial fluid (isf) between the plasma and the intracellular fluid. Plasma is the fluid portion of the blood confined within blood vessels. Transcellular fluid is neither extracellular fluid that is neither interstitial or plasma. Ex- cerebrospinal fluid, synovial fluid (in joints), intraocular fluid, and fluid in pericardial. Plasma membrane is permeable to water and selectively permeable to solute. Capillary wall is freely permeable to water and ion. It separates the plasma from the isf. plasma (capillary wall) interstitial fluid (plasma membrane) intracellular fluid.
