The upper respiratory tract extends from the nose through the ________.
A. pharynx
B. alveoli
C. trachea
D. larynx
E. lungs
Answer: D
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In the strategy named"range fractionation,"
A) Individual receptor cells are sensitive to a small portion of the possible range of intensities, but multiple receptors cover different parts of the range. B) Individual receptor cells are sensitive to a large portion of the possible range of intensities. C) There is a decrease in sensory discrimination. D) Populations of receptors hinder sensory discrimination.
Which is not a general function of the nervous system?
A. Transporting materials throughout the body B. Collecting information C. Processing and evaluating information D. Responding to information E. No exceptions; all are general functions of the nervous system.
All of the following are characteristics of the epidermis except that it
A) is multilayered. B) is flexible. C) is self-repairing. D) serves as UV radiation protection. E) is vascularized.
Which statement accurately compares the transmission speed of the different types of synapses?
A. Transmission at electrical synapses involves a brief synaptic delay, but chemical synapses are faster. B. Transmission at chemical synapses involves a brief synaptic delay, but electrical synapses are faster. C. Electrical synapses have a constant delay of 1 millisecond, but chemical synaptic delays vary between 0.1 and 0.3 millisecond. D. Transmission at both chemical and electrical synapses involves a synaptic delay of approximately 1 millisecond.