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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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.
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.
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.
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.