Hormones can be all of the following EXCEPT ___.
A. proteins
B. eicosanoids
C. steroids
D. carbohydrates
Answer: D. carbohydrates
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Which of the following statements regarding hearing is TRUE?
A. Low-pitched tones selectively cause vibration of the basilar membrane at a point closer to the oval window than high-pitched tones do. B. Sound is amplified as it is conducted from the oval window to the tympanic membrane. C. The pitch of sounds is conveyed by the amplitude of the vibration of the oval window. D. The loudness of a sound is conveyed by the frequency of action potentials generated in the cochlear nerve.
Which of the following is an example of a Type IV allergy?
A) itchy rash that follows contact with poison ivy B) hay fever C) anaphylaxis D) cross reactions that occur following the transfusion of an incompatible blood type E) phagocytosis cannot remove antigen-antibody complexes, leading to inflammation and tissue damage
Hair cells of the cochlea are monitored by sensory neurons located in the ________.
Fill in the blank(s) with the appropriate word(s).
One of the reasons you might struggle to lift a heavy object with your arm fully extended is because
A. in that posture, some myosin heads overlap actin in the wrong orientation and tug actin in the wrong direction. B. motor neurons cannot release as much ACh in that posture. C. in extension, the proximity of Z discs to thick filaments restricts the sliding movement within sarcomeres. D. full extension results in decreased overlap between thick and thin filaments in the muscle.