Surfactant prevents lung collapse since it lowers surface tension of the film of water lining each alveolar air sac
Indicate whether the statement is true or false
TRUE
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The urinary function of elimination occurs through the
A) liver. B) glomerulus. C) kidney. D) ureter. E) urethra.
Describe the relationship between the number of fibers in a motor unit and the precision of body movements
A) The finer and more precise the movement, the thinner the muscle fibers in the motor unit. B) The finer and more precise the movement, the greater the number of motor neurons in the motor unit. C) The finer and more precise the movement, the fewer the number of muscle fibers in the motor unit. D) The finer and more precise the movement, the greater the number of muscle fibers in the motor unit. E) The finer and more precise the movement, the thicker the muscle fibers in the motor unit.
Tubular reabsorption
a. refers to the movement of a substance from the peritubular capillary blood into the tubular fluid b. occurs by either active or passive transport c. involves the process of transepithelial transport d. has b and c characteristics e. has none of the above characteristics
____________________ are long-range chemical mediators secreted by endocrine glands into the blood, which carries them to distant target organs
Fill in the blank(s) with correct word