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Problem set: water and solute movement across membranes - page 9 / 10

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Problem set: water and solute movement across membranes

*  Christy ran the Boston marathon last year (fun!). The following questions are based on her.

29.

Christy weighs 160 lbs.  What is her weight in kilograms? ________________

30.

Christy eats a large amount of proteins, carbohydrates and lipids during her training season. The food is digested in her digestive system lumen.  Small biomolecules are then absorbed across cells and into the ECF. Draw an epithelial cell with the properties below. Label the mechanism and direction of molecule movement across the membrane for each transmembrane transport.  The epithelial cell moves:    

-  small lipids from the lumen to the ECF

- glucose from the lumen to the ECF

- proteins from the lumen to the ECF

31.

Christy now has inflammation in the connective tissue that connects her leg muscles to her leg bones. This type of connective tissue is ________________. This connective tissue contains cell named _______________ that produce extracellular matrix proteins.   The type of protein that makes the tissue strong and flexible but not stretchy is _______________. This protein is made in the cell and moved out by the process ________________.

32.

Christy is given a quick routine physical examination immediately after the marathon. Included in the examination was palpation of her antebrachium and auscultation of her thorax. What was likely the purpose of each of these two examinations?

33.

At the end of the race, Christy had 6.71 osmoles in her intracellular fluid  and 22 liters of fluid. What was her intracellular fluid osmolarity?    

34.

If she had 11 liters of fluid in her extracellular fluid at the end of the race, how many osmoles were in her extracellular fluid?

35.

A normal value for body osmolarity is _______________, so Christie's concentration of body fluids at the end of the race was (circle your choice)  higher /  lower  than normal.  

36.

As a precaution, Christie was given 500ml of a 5 % glucose in 0.45 % NaCl solution. Compared to her specific body values at the end of the race, this solution is (circle your choice) hyposmotic  / isosmotic  / hyperosmotic .  With this IV solution in Christy's case, water moves (circle choice)   in  / out  of cells and is (circle choice)   hypotonic  / isotonic  / hypertonic.  

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