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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Chapter 3 Solutions
LSC (CONCORDIA UNIV ST PAUL) BIO 315/316: B&N DPF Connect with APR and Phils Online Access for Anatomy and Physiology: The Unity of Form and Function 180 Day Access ENTRP
- What effect might a change in extracellular osmolarity have on the movement of water across cell membranes (you can assume that plasma and interstitial fluid osmolarities are the same)?arrow_forwardIf a person was severely dehydrated and the osmolarity of their blood and tissue fluids was at 500 mOsm/L while their intracellular osmolarity was 300 mOsm/L; explain what would happen via osmosis.arrow_forwardCalculate the change in osmolarity and the volume of extracellular and intracellular fluid when a hypertonic or hypotonic solution is addedarrow_forward
- With regard to fluid movement between body fluid compartments, what effect does oral/parenteral administration of a hypotonic NaCl solution (0.45% NaCl, 145 mOsm/kg) have on the volume & osmolality of the extracellular fluid compartment (ECF), and on the volume & osmolality of the intracellular fluid compartment (ICF)? Clearly explain your reasoningarrow_forwardWhat is the function of Extracellular Osmolarity?arrow_forwardA solution may have the same osmolarity as normal body fluids yet it may not be isotonic. Explain why.arrow_forward
- Calculate the osmolarity of a 3% NaCl solution. Is this solution hypotonic OR hypertonic?arrow_forwardwhat is the amount of solute in a solution in terms of osmolarity and tonicity?arrow_forwardDescribe the conditions required to produce osmosis and explain why osmosis occurs under these conditions.arrow_forward
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