17_ActiveLecturePRS - Why does the smell of formaldehyde...

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Why does the smell of formaldehyde seem to dissipate during the time you spend in the dissection lab, yet you are able to detect the cologne of someone who just entered the lab? 1. Olfactory receptors are destroyed by formaldehyde. 2. Olfactory receptors adapt to the smell of formaldehyde. 3. Central adaptation has occurred, though olfactory receptors retain sensitivity to other smells. 4. None of these is correct.
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What is unique about the sense of smell when compared to other special senses? 1. Olfaction travels along only one cranial nerve. 2. Olfaction is a chemical sense. 3. Olfactory stimulation passes through two synapses in the thalamus. 4. Olfactory stimulation is the only type of sensory information that reaches the cerebral cortex directly.
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Which of these correctly describes the pathway of tasting, starting at the tongue? 1. CNs VII, IX, and X synapse in medulla synapse in thalamus primary sensory cortex 2. Synapse in medulla CNs VII, IX, and X medial lemniscus gustatory cortex synapse in thalamus 3. Tongue CNs VII and IX synapse in pons CN V synapse in thalamus primary sensory cortex 4. None of these is correct
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Which type of lingual papillae do not contain taste buds? What is their function? 1. Circumvallate papillae/perception of water molecules 2. Umami papillae/perception of glutamate 3. Filiform papillae/provide friction 4. Fungiform papillae/appreciation of texture
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Which cranial nerve supplies taste buds located in circumvallate papillae? 1. Glossopharyngeal nerve 2. Vagus nerve 3. Trigeminal nerve 4. Facial nerve
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What is the survival value of being more sensitive to sour and bitter tastes than to sweet and salty ones? 1.
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17_ActiveLecturePRS - Why does the smell of formaldehyde...

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