When light strikes a photoreceptor it
A. hyperpolarizes and releases less neurotransmitter.
B. hyperpolarizes and releases more neurotransmitter.
C. deporlarizes and releases more neurotransmitter.
D. depolarizes and releases less neurotransmitter.
Answer: A
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A __________ is a procedure where a temporary opening is made in the trachea to allow airflow when the upper airway is obstructed.
Fill in the blank(s) with the appropriate word(s).
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