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Unit 5 Chapter 16
Assessment
| Question | Answer |
|---|---|
| You can smell the fragrance of your deodorant when you just put it on, but after a little while the smell fades. What explains this phenomenon? | The phasic nature of olfaction |
| What is a sensation? | Detection of a stimulus resulting in a receptor potential |
| Changes in cerebrospinal fluid pH are detected by _________blank. | chemoreceptors |
| Which of the following is not an analgesic (pain reliever) found naturally in the central nervous system? Endogenous opioid Dynorphin Enkephalins Endorphins Bradykinin | Bradykinin |
| In a taste bud, which cell produces a receptor potential? | Gustatory cell |
| Which of the following structures is visible to the naked eye? Multiple Choice Lingual papilla Taste (gustatory) cell Taste hair Taste bud Taste pore | Lingual papilla (visible bumps on tongue that are not taste buds) |
| Which taste is produced by amino acids such as aspartic acid and glutamic acid? Salty Umami Bitter Sweet Sour | Umami |
| Which structure allows upper respiratory infections to spread from the throat to the tympanic cavity? | Auditory tube |
| Which of these is most vulnerable to irreversible damage caused by a very loud noise? | Cochlear hair cells |
| Vibrations of the cochlea cause the stereocilia to bend, pulling open K+ channels. K+ inflow through the open channels depolarizes the hair cell. Based on this, which of the following statements must be true? | There is a higher concentration of K+ in endolymph than in the intracellular solution of hair cells. |
| Which of the following does not contribute to the sense of equilibrium? Multiple Choice Otolithic membrane Semicircular canals Saccule Utricle Vallate papillae | Vallate papillae The Vallate papillae are large papillae on the human tongue that contain taste buds, but they are not involved in the sense of equilibrium. |
| Which of the following correctly describes the vestibular projection pathway to the brain? | Vestibular nerve - vestibulocochlear nerve - vestibular nuclei - thalamus - cerebral cortex |
| When you travel in an elevator, what senses when the elevator is moving? | The hair cells of the otolithic membrane of the macula sacculi |
| What is the crista ampullaris associated with? | Dynamic equilibrium in angular acceleration |
| The spiral organ is housed within which of the following structures? | Cochlear duct |
| Half of the axons of each optic nerve decussate at the _________blank. | optic chiasm |
| When you view objects close to the eye, the eye makes an adjustment called _________blank. | accommodation |
| Which of the following describes the duplicity theory of vision? | A single type of receptor system cannot produce both high sensitivity and high resolution. |
| Why do cones exhibit less neuronal convergence than rods? | Photopic vision has higher resolution than scotopic vision. / |
| What are the first-order neurons in the visual pathway? | Bipolar cells |
| The three types of cones in the retina are differentiated from one another by what feature? | The absorption peak of their photopsin |
| Which of the following is not considered an accessory structure of the eye? Multiple Choice Conjunctiva Palpebra Lacrimal apparatus Superior oblique Cornea | Superior oblique |
| Adjustment to close-range vision involves all of the following except _________blank. | light adaptation |
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