Predict how water plays a role as a lubricant, reactant, coolant, and solvent during exercise
What will be an ideal response?
During exercise, water lubricates the joints for easy movement. It also functions in dehydration synthesis and hydrolysis reactions that occur during muscle contraction. Water also cools the body through the evaporation of perspiration from the skin. Water dissolves wastes generated by exercise.
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The percentage of the volume of all formed elements in the blood is called the ________.
Fill in the blank(s) with the appropriate word(s).
How many cavities is each maxillary bone involved in forming?
A. One B. Two C. Three D. Four
Compartments A and B are separated by a membrane that is permeable to K+ but not to Na+ or Cl-. At time zero, a solution of KCl is poured into compartment A and an equally concentrated solution of NaCl is poured into compartment B. Which would be true once equilibrium is reached?
A. Diffusion of K+ from A to B will be greater than the diffusion of K+ from B to A. B. The electrical potential difference and diffusion potential due to the concentration gradient for K+ will be equal in magnitude and opposite in direction. C. The concentration of Cl- will be higher in B than it was at time zero. D. The concentration of Na+ in A will be higher than it was at time zero. E. There will be a potential difference across the membrane, with side B negative relative to side A.
Blockage of the ileocecal valve would prevent
A. lymph from entering the jejunum. B. chyme from entering the ileum. C. bile from entering the duodenum. D. chyme from entering the large intestine. E. pancreatic juice from entering the duodenum.