All of the following bones contain paranasal sinuses except
A. the ethmoid bone.
B. the mandible.
C. the sphenoid bone.
D. the maxilla.
E. All of these bones contain paranasal sinuses.
Answer: B
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The function of the auditory tube is to
A) help maintain equilibrium. B) amplify sounds. C) equalize air pressure on both sides of the tympanic membrane. D) redistribute endolymph after hearing a sound. E) provide a passageway for sound waves to enter the ear.
Match each of the following terms with its function or description.
a. sclera b. cornea c. retina d. rods e. cones f. iris g. pupil h. choroid i. conjunctiva j. lens 1. _____ Sometimes called the window of the eye 2. _____ Colored part of the eye 3. _____ Hole in the eye that lets light in 4. _____ Layer of the eye that keeps light from scattering in the eye 5. _____ Structures in the retina that are able to respond to color 6. _____ White of the eye 7. _____ Mucous membrane covering part of the sclera 8. _____ Structure that is changed in shape by ciliary muscles to facilitate focus of light 9. _____ Innermost layer of the eye 10. _____ Structures in the retina that respond in dim light
What separates the thoracic cavity from the abdominopelvic cavity?
A) pleura B) mediastinum C) diaphragm D) pericardium
Which of the following accurately describes the inorganic phosphates (Pi) of the body fluids?
A) They are not necessary in the linking of endergonic with exergonic reactions. B) They form crystals with calcium in the presence of calsequestrin. C) They are not important for cell membrane structure. D) They are not a significant component of nucleic acids. E) They participate in the activation of some enzymes.