Concept explainers
To determine: The correct arrangement of compartments, such as interstitial fluid, plasma, and intracellular fluid with respect to the movement of a glucose molecule in the body.
Introduction: Small intestine is the part of the gastrointestinal tract where the majority of
To determine: The compartments out of interstitial fluid, intracellular fluid and plasma which are considered as extracellular fluid (ECF).
Introduction: The substances synthesized and secreted by the cells forms the extracellular matrix. This matrix consists of extracellular fluid in which cells and other substances are suspended. Plasma is the extracellular fluid present in blood vessels in which blood cells are suspended.
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EBK HUMAN PHYSIOLOGY
- Describe fats and oils, and what makes triglycerides solid (fats) or liquid (oils). List examples of lipids except fats and oils (triglycerides). What is the main material of the plasma membrane? (draw a schematic figure) Describe micelles and liposomes (if needed, draw a figure). The plasma membrane is ___________permeable. Describe how an active transport works (with an example _________ channel). In the Na+/K+ channel, how many ions move across the membrane?arrow_forwardThe intracellular salt content of a red blood cell is about 150 mM. The cell is put in a 500 mM salt beaker. (a) Describe what will happen to the cell in terms of osmosis if the cell membrane is permeable to water but not to ions. (b) Which direction would solutes diff use if the membrane was permeable to ions: into or out of the cell?arrow_forward"Tight junctions perform two distinct functions: they seal the space between cells to restrict paracellular flow and they fence off plasma membrane domains to prevent the mixing of apical and basolateral membrane proteins" is true or false.arrow_forward
- The three fundamental classes of proteins involved in transport across membranes are: i) channelsii) pumpsiii) exchangers For each class, describe its essential features, explain how transport is accomplished and name at least one representative example.arrow_forwardDefine the difference between passive transport and active transport, and give examples of each. Each example should specify the type of cell, the name of the membrane protein(s), and the substance that is being transported.arrow_forwardWhat does the term intracellular fluid refer to?arrow_forward
- Name and describe the composition of extracellular materials.arrow_forwardExplain with an example the general principle of physiology that controlledexchange of materials occuring between compartments and acrosscellular membranes?arrow_forwardAll of the following are passive membrane transport processes except: (a) diffusion. (b) facilitated diffusion. (c) vesicular transport. (d) osmosis.arrow_forward
- ______transport (general term)uses the energy of Browain motion associated with gradients to move materials from one place to another without the use of "cellular energy".A specific example of this type of transport is ‐-----------arrow_forwardThis cell is permeable to Urea, but not permeable to sucrose. Intracellular impermeant molecules cannot cross the plasma membrane. The bath solution is ‘infinite volume’. Bath Solution: 250 mM Sucrose 250 mM Urea Is this solution Hypoosmotic, Isoosmotic, or Hyperosmotic? Immediately after this cell is placed in the bath will it swell, shrink, or remain the same? Fill in this table for equilibrium conditions for each ion. Consider solute movement ONLY. in (mM) out (mM) Intracellular impermeants Sucrose Urea At equilibrium, will the cell swell, shrink, or remain the same volume? Is this solution hypotonic, isotonic, or hypertonic?arrow_forward1) whether the statement is correct or incorrect and 2) the reasoning for your answer. Your answer should demonstrate your understanding of the physiological concepts underlying the statement and be professionally written. Assume a cell with the following properties: [Na]out = 120 mM; [Na]in = 12 mM [K]out = 5 mM; [K]in = 125 mM Membrane is permeable only to Na+ and K+ If the plasma membrane of the cell becomes more permeable to Na+, both influx of Na+ into the cell and the Na+ equilibrium potential will increase.arrow_forward
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning