Related Experiment Video

Updated: Oct 2, 2026

Measuring the Osmotic Water Permeability Coefficient (Pf) of Spherical Cells: Isolated Plant Protoplasts as an Example
14:20

Measuring the Osmotic Water Permeability Coefficient (Pf) of Spherical Cells: Isolated Plant Protoplasts as an Example

Published on: October 8, 2014

Non linear volume flow dependence on osmotic pressure difference in frog skin

F Celentano, G Monticelli, M N Orsenigo

    Journal De Physiologie
    |January 1, 1978
    PubMed

    More Related Videos

    Physiological Preparation of Hair Cells from the Sacculus of the American Bullfrog (Rana catesbeiana)12:07

    Physiological Preparation of Hair Cells from the Sacculus of the American Bullfrog (Rana catesbeiana)

    Published on: March 17, 2017

    Functional Evaluation of Olfactory Pathways in Living Xenopus Tadpoles07:33

    Functional Evaluation of Olfactory Pathways in Living Xenopus Tadpoles

    Published on: December 11, 2018

    Related Concept Videos

    Tonicity in Animals00:59

    Tonicity in Animals

    The tonicity of a solution determines if a cell gains or loses water in that solution. The tonicity depends on the permeability of the cell membrane for different solutes and the concentration of nonpenetrating solutes in the solution within and outside of the cell. If a semipermeable membrane hinders the passage of some solutes but allows water to follow its concentration gradient, water moves from the side with low osmolarity (i.e., less solute) to the side with higher osmolarity (i.e.,...
    Osmoregulation in Fishes02:32

    Osmoregulation in Fishes

    When cells are placed in a hypotonic (low-salt) fluid, they can swell and burst. Meanwhile, cells in a hypertonic solution—with a higher salt concentration—can shrivel and die. How do fish cells avoid these gruesome fates in hypotonic freshwater or hypertonic seawater environments?
    Osmosis and Osmotic Pressure of Solutions02:40

    Osmosis and Osmotic Pressure of Solutions

    A number of natural and synthetic materials exhibit selective permeation, meaning that only molecules or ions of a certain size, shape, polarity, charge, and so forth, are capable of passing through (permeating) the material. Biological cell membranes provide elegant examples of selective permeation in nature, while dialysis tubing used to remove metabolic wastes from blood is a more simplistic technological example. Regardless of how they may be fabricated, these materials are generally...
    Tonicity in Animals01:16

    Tonicity in Animals

    Tonicity describes the amount of solute in a solution. The measure of the tonicity of a solution, or the total amount of solutes dissolved in a specific amount of solution, is called its osmolarity. Three terms—hypotonic, isotonic, and hypertonic—are used to relate the osmolarity of a cell to the osmolarity of the extracellular fluid that contains the cells. In a hypotonic solution, such as tap water, the extracellular fluid has a lower concentration of solutes than the fluid inside the cell,...
    Capillary Exchange01:28

    Capillary Exchange

    The cardiovascular system's chief role is to disseminate gases, nutrients, waste, and other substances to the body's cells. Small molecules like gases, lipids, and lipid-soluble substances directly diffuse through capillary wall endothelial cell membranes. Glucose, amino acids, and ions, including sodium, potassium, calcium, and chloride, use transporters for facilitated diffusion via membrane-specific channels. Glucose, ions, and bigger molecules may also pass through intercellular clefts.
    Fluid Movement Between Compartments01:18

    Fluid Movement Between Compartments

    The force applied by fluids against a surface, known as hydrostatic pressure, initiates the transfer of fluid among different compartments. Within our blood vessels, the blood's hydrostatic pressure is a result of the heart's pumping action. At the arteriolar end of capillaries, hydrostatic pressure (capillary blood pressure) exceeds the opposing colloid osmotic pressure created primarily by plasma proteins like albumin. This discrepancy in pressure propels plasma and nutrients from the...