The black spot, or opening in the circular muscle of the iris, is the _______.
A) iris
B) retina
C) lens
D) pupil
Correct Answer:
Verified
Q10: The _ contains mechanoreceptors that convert sound
Q11: The six extrinsic muscles of the eye
Q12: The _ is made up of black
Q13: Chemical substances called _ stimulate chemoreceptors in
Q14: Eyes, ears, nose, and taste buds are
Q16: _ is the process of converting the
Q17: The sound receptors are located within the
Q18: The sensation of _ is a protective
Q19: Any detectable change in the internal or
Q20: In sensory adaptation, the frequency of action
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