Identify the correct statement(s)
a. The DRG consists of both inspiratory neurons and expiratory neurons.
b. The neurons of the DRG remain inactive during normal quiet breathing.
c. The DRG is called into play by the VRG as when demands for ventilation are increased.
d. All of the above are correct.
e. None of the above are correct.
E
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A low count of which of the white blood cells shown in the figure may indicate pregnancy, ovulation, or hyperthyroidism?
a) A b) B c) C d) D e) E
Heat loss from the body by evaporation occurs even in very cold weather
Indicate whether the statement is true or false
The ossicular system of the ear
a. serves to keep the pressure on the two sides of the tympanic membrane equal. b. increases the pressure of vibration as it transfers the sound wave from air in the outer ear to fluid in the inner ear. c. assists in determining whether a sound comes from the front or rear. d. is part of the vestibular apparatus. e. is in direct contact with the tympanic membrane and the round window.
The central cavity of a tooth is filled with
A. dentin. B. enamel. C. cementum. D. calcium phosphate. E. pulp.