The substance that prevents collapse of the alveoli during exhalation is __________.
Fill in the blank(s) with the appropriate word(s).
surfactant
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A protein is found in blood that is produced by the pancreas and acts on receptors of cells in the liver. What type of physiological regulator is it most likely to be?
A. An autocrine signal B. A neurotransmitter C. An enzyme D. A hormone E. A paracrine signal
Striated muscles, which appear to have stripes, are in which type of muscle?
A. Skeletal B. Internal C. Visceral D. Smooth
A single ____________________ pulls the thin filament inward only a small percentage of the total shortening distance
Fill in the blank(s) with correct word
Which of the following descriptions best matches the term basilar membrane?
A) moves up and down due to currents in the perilymph B) transmits movement of the tympanic membrane to the inner ear C) supports the olfactory organ D) tiny duct necessary for the static sense of equilibrium E) covers over the oval window