The stereocilia of cochlear hair cells project into the
A. modiolus.
B. basilar membrane.
C. tectorial membrane.
D. helicotrema.
E. spiral ganglion.
C
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Which of these is not a short-term response to a decrease in blood pressure?
A) release of EPO B) increase in heart rate C) increase in heart contractility D) peripheral vasoconstriction E) release of epinephrine and norepinephrine
What is the single-most important determinant of the efficiency of locomotion among all animals?
A) Surface area B) Shape C) Body size D) Frictional drag
What is the effect of turbulence of the air passing between the vestibule and the nasal chamber?
A) The effect is negligible. B) It allows extra time for warming and humidifying incoming air. C) It prevents air filtration. D) It decreases the volume of air entering, to prevent possible damage to delicate respiratory surfaces by too rapid a rate of airflow. E) None of the answers are correct.
Physical evidence that supports the sliding filament theory of muscle contraction includes
A) constant distance between Z lines during contraction. B) decreased width of the H band during contraction. C) increased width of the I band during contraction. D) decreased width of the A band during contraction. E) the I band and H band distance is constant during contraction.