Which of the following factors affects skin friction drag?
A. increase in the relative velocity of fluid flow
B. the surface area of the body over which the flow occurs
C. the viscosity of the fluid
D. all of the above
D. all of the above
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Kicking a soccer ball is flexion of the leg at the knee joint as the foot draws back and then extension as it contacts the ball.
Answer the following statement true (T) or false (F)
The majority of calcium needed to maintain homeostasis is stored in the ______.
A. cytoplasm of cells B. cartilage C. bones D. intracellular fluid
A 50-year-old male coal miner has a long history of lung disease. Where in the lung would you expect to find the greatest deposition of inhaled coal dust?
A. terminal bronchioles B. bronchi C. nonrespiratory bronchioles D. alveolus E. trachea
A drug that functions as an agonist
A. blocks a receptor so that the neurotransmitter cannot bind. B. causes great pain if taken in too high a dose. C. activates a receptor, helping a neurotransmitter bind or triggering an action potential in some other way. D. relieves pain.