A Stimulus That Is Strong Enough to Trigger an Action

Q9: Receptor potentials can trigger action potentials. True

Q10: If the doctor says you have a

Q11: In a person who is nearsighted, the:<br>A)eyeball

Q12: The stronger the stimulus, the larger the

Q13: Ommatidia are found in _ eyes.<br>A)flatworm<br>B)mollusk<br>C)arthropod<br>D)amphibian<br>E)human

Q15: The fovea of the human eye is:<br>A)made

Q16: A receptor that produces a signal in

Q17: Chemoreceptors include:<br>A)rods.<br>B)hair cells.<br>C)Pacinian corpuscles.<br>D)olfactory receptors.<br>E)muscle spindles.

Q18: The white of the human eye's exterior

Q19: Photoreceptors include:<br>A)rods.<br>B)hair cells.<br>C)Pacinian corpuscles.<br>D)Meissner's corpuscles.<br>E)Ruffini corpuscles.