12. Which is the correct order of events of sound transmission through the ear?

Question

12. Which is the correct order of events of sound transmission through the ear? 1. sound waves strike the eardrum 2. the ear ossicles vibrate 3. hair cells of the spiral organ vibrate 4. the perilymph in the cochlea moves 5. sound waves enter the external auditory canal B. 1, 2, 3, 4,5 c. 5, 1, 2, 4, 3 D·5,2,1,3,4 A. 5, 4, 3, 2, 1 13. What is the correct sequence for lacrimal fluid production and drainage? a: Tears disperse across the surface of the eye. b: Tears are produced by the lacrimal gland. c: Fluid drains through the nasolacrimal duct. d: Fluid enters the nasal cavity. e: Fluid enters the lacrimal canaliculi and collects in the lacrimal sac A. a, b, c, d, e B. b, a, c, d, eC. c, a, d, b, e D. b, a, e, c, d E. c, a, b, e, d 14. If you were to cut a cross section of the retina and examine it under a microscope, what would be the order of features from the choroid to the posterior cavity? a: Rods and cones b: Ganglionic axons progressing to the optic nerve c: Bipolar cells d: Ganglion cells' bodies e: Pigmented retina A. a, b, c, d, e B. e, a, c, d, b C. c, a, e, d, b D. d, e, a, b, c E. e, d, c, b, a 15. Peter suffered from polio as a child. He drags his right leg slightly when he walks because of weakness in flexing his hip and extending his knee. Moreover, his leg swings outward slightly with each step, and he has difficulty in crossing his right leg over his left. These all result from damage to which nerve? A. sciatic B. obturator C. femoral D. tibial 16. Which sequence correctly traces the pathway of aqueous humor in the eye? a: Aqueous humor is secreted by epithelial ciliary cells. b: Aqueous humor is released into the posterior chamber. c: Aqueous humor is drained into the scleral venous sinus. d: Aqueous humor washes over the lens and then passes through the pupil into the anterior chamber. A. a, b, c, d B. b, a, c, d C. a, b, d, c D. d, a, c, b E. a, c, b, d

Explanation / Answer

12. C. 5, 1, 2, 4, 3

The correct order of events of sound transmission through the ear is:

13. D. b, a, e, c, d

The sequence for lacrimal fluid production and drainage is-

14. B. e, a, c, d, b

The correct order is:

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