What is the purpose of goblet cells found in columnar epithelium?
A. Secrete digestive enzymes
B. Secrete water
C. Secrete mucus
D. All apply.
Answer: C
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Which of the following statements regarding hearing is TRUE?
A. Low-pitched tones selectively cause vibration of the basilar membrane at a point closer to the oval window than high-pitched tones do. B. Sound is amplified as it is conducted from the oval window to the tympanic membrane. C. The pitch of sounds is conveyed by the amplitude of the vibration of the oval window. D. The loudness of a sound is conveyed by the frequency of action potentials generated in the cochlear nerve.
When does the heart begin to beat?
A. By week 3 in the embryo B. By week 5 in the embryo C. Early in fetal development D. By the fifth month of development E. At birth
Which of the following muscles is the prime mover for inhalation?
A) Internal intercostals B) External intercostals C) Stylohyoid D) Diaphragm E) Hyoglossus
Conscious control of micturition inhibits the micturition reflex by using nerve centers in
the A) medulla oblongata. B) pons and hypothalamus. C) spinal cord. D) brainstem and cerebral cortex.