To discuss:
The meaning of osmotic pressure, osmolarity, tonicity, and milliosmoles per liter (mOsm/L) in relation to osmosis.
Introduction:
Cells are regarded as the simplest unit (structural and functional) of life. Cellular membrane, nucleus, and cytoplasm are the three major components of a cell. Cellular membrane, which surrounds the entire cell, is composed of phospholipids and proteins. The nucleus is bound by a nuclear membrane, and it possesses the genetic material of the cell. Cytoplasm consists of organelles, cytoskeleton (filaments and tubules), and inclusion bodies. Protoplasm denotes all living material that are present in the cell enclosed by the cellular membrane (inside and outside the nucleus).
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Anatomy & Physiology: The Unity of Form and Function
- The movement of water through a semipermeable membrane from a region of lower solute concentration to a region of higher solute concnetration is called _________ osmosis diffusion solubility gradientarrow_forwardThe most cation that found in extacellular fluid isarrow_forwardsodium rushing into the cell, making the potential difference positivearrow_forward
- The two most abundant cations in the ICFare and .arrow_forwardDifference between Osmosis and Diffusionarrow_forwardWhen a person becomes dehydrated, the amount of water in extracellular fluids such as blood decreases, causing the solute concentration of these fluids to increase. State whether osmosis results in water entering or leaving cells.arrow_forward
- osmoregulation homeostasisarrow_forwardOne of the systems of diabetes of mellitus (sugar diabetes) is extreme thirst. What brings about this thirst? Explain in term of osmosis.arrow_forwardBriefly explain why each of the following statements is false, or reword it to make it true.9. The transport maximum (Tm) sets an upper limit on the rate of osmosis.arrow_forward
- Blood volume must be restored in a person who has lost large amounts of blood due to serious injury. This is often accomplished by infusing isotonic NaCl solution into the blood. Why is this more effective than infusing an isoosmotic solution of a penetrating solute, such as urea?arrow_forwardhow the fluid balancing maintain fluid homeostasisarrow_forwardmembrane permeability for most of the compounds is directly proportional to their partition coefficient or their relative solubility in oil versus water true or falsearrow_forward