Textbook QuestionWhich of the following cranial nerves is not involved in the gustatory sense?a. Vagus nerve (X)b. Hypoglossal nerve (XII)c. Facial nerve (VII)d. Glossopharyngeal nerve (IX)413views
Textbook QuestionTears normally flow from the lacrimal sac into the:a. lacrimal gland.b. lacrimal canaliculi.c. lacrimal puncta.d. nasolacrimal duct.227views
Textbook Question1. Match the cell type with the correct stimulus. ____Rod or cone ____Hair cell in cochlea ____Gustatory cell ____Olfactory neuron ____Hair cell in vestibulea. Head movementb. Odorantc. Photond. Taste substancee. Sound wave230views
Textbook QuestionThe axons of the olfactory nerve terminate in the:a. olfactory epithelium.b. olfactory bulb.c. olfactory tract.d. primary olfactory cortex.255views
Textbook QuestionFill in the blanks: In an olfactory neuron, the binding of a(n) ______to its membrane receptor triggers a(n)_______potential in the axons of the______nerve.226views
Textbook QuestionThe primary olfactory cortex is located in the:a. frontal lobe.b. occipital lobe.c. parietal lobe.d. temporal lobe.226views
Textbook QuestionWhich of the following statements is true regarding gustatory cells?a. They have microvilli that project into the taste pore.b. There are only 10–20 gustatory cells in a typical taste bud.c. They have a lifespan of approximately 6 months.d. Some form synapses with neurons that give rise to the trigeminal nerve.227views
Textbook QuestionMatch the taste with the chemical substance that produces it. ____Sweet ____Sour ____Salty ____Bitter ____Umamia. Many alkaloidsb. Sucrosec. Glutamated. Sodium ionse. Hydrogen ions224views
Textbook Questionhe axons from the nasal retina in the left eye terminate in the:a. right lateral geniculate nucleus.b. left lateral geniculate nucleus.c. right medial occipital lobe.d. left medial occipital lobe.210views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.a. The incus is connected to the tympanic membrane.234views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.b. The stapes is attached to the oval window.254views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.c. The auditory canal is separated from the middle ear by the round window.234views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.e. The semicircular ducts are connected to the utricle, and the cochlear duct is continuous with the saccule.239views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.d. The cochlear duct is filled with perilymph.227views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.f. The spiral organ is located in the scala tympani.259views
Textbook QuestionThe macula in the utricle detects:a. rotation of the head to the right.b. very low-frequency sound waves that we can feel but not hear.c. tilting of the head to one side.d. linear acceleration of the head in a vertical plane.214views
Textbook QuestionFill in the blanks: The spiral organ sits on the________membrane, and the stereocilia of the outer hair cells contact the _____membrane.205views
Textbook QuestionTrue or false: Hair cells in the spiral organ will depolarize or hyperpolarize, depending on the direction in which the stereocilia are bent.206views
Textbook QuestionWhich of the following is not part of the auditory pathway in the CNS?a. Superior temporal lobeb. Superior colliculusc. Medial geniculate nucleusd. Nuclei in the ponse. Cochlear nuclei250views
Textbook QuestionFill in the blanks: In the ampulla of a semicircular duct, the hair cells are located in the_____and their stereocilia and kinocilium are embedded in the______.234views
Textbook QuestionStimuli from the inner ear regarding head movement and position are sent to all of the following except the:a. vestibular nuclei.b. oculomotor nucleus.c. parietal lobe.d. cerebellum.e. trigeminal nucleus.215views
Textbook QuestionExplain what would happen to your sense of smell if there were no basal cells present in the olfactory epithelium.214views
Textbook QuestionIn which direction would you be unable to move your right eye if your right abducens nerve were damaged?208views
Textbook QuestionFollowing a stroke, a patient lost vision in the left visual field. Name several structures in the brain that could have been damaged by the stroke to have caused this vision loss. Be specific as to right or left side.208views
Textbook QuestionWhy do you have the sensation that you are still spinning immediately after stopping?219views
Textbook QuestionMr. Spencer suffers loss of taste sensation. Tests reveal that his taste buds and salivary glands are functional. What other structures might be impaired that would explain his loss of taste?212views
Textbook QuestionIf severe congestion from a cold prevented your pharyngotympanic tube from opening, what could happen to your tympanic membrane? Explain your answer.225views
Textbook QuestionSuppose the round window in your middle ear became very stiff. What effect would this have on hearing, and why?222views
Textbook QuestionMrs. Flores is a 45-year-old female who suffered a fracture of the ethmoid bone as the result of a car accident. Several days later, she complained that she couldn't taste her food very well. How is her injury related to the loss of taste sensation? 215views
Textbook QuestionYour 60-year-old patient, Mr. Guster, has Bell's palsy, which causes dysfunction of those portions of the facial nerve that control muscles of facial expression. He is surprised when you tell him to tape the eyelids of his right eye closed at night to prevent dryness. Why might Bell's palsy cause dryness of the eye on the affected side? 229views
Textbook QuestionWhich of the following is not a possible cause of conduction deafness? a. impacted cerumen, b. middle ear infection, c. cochlear nerve degeneration, d. otosclerosis.516views
Textbook QuestionOlfactory nerve filaments are found a. in the optic bulbs, b. passing through the cribriform plate of the ethmoid bone, c. in the optic tracts, d. in the olfactory cortex.205views
Textbook QuestionWhere are the olfactory sensory neurons, and why is that site poorly suited for their job?209views
Textbook QuestionA progressive disorder characterized by the loss of higher-order cerebral functions is (a) Parkinson's disease, (b) parasomnia, (c) Huntington's disease, (d) Alzheimer's disease.246views
Textbook QuestionA reduction in sensitivity in the presence of a constant stimulus is (a) transduction, (b) sensory coding, (c) line labeling, (d) adaptation.173views
Textbook QuestionWhich of the following statements does not correctly describe the spiral organ? a. Sounds of high frequency stimulate hair cells at the basal end, b. the 'hairs' of the receptor cells are embedded in the tectorial membrane, c. the basilar membrane acts as a resonator, d. the more numerous outer hair cells are largely responsible for our perception of sound.174views
Textbook QuestionPitch is to frequency of sound as loudness is to a. quality, b. intensity, c. overtones, d. all of these.163views
Textbook QuestionSound waves are converted into mechanical movements by the (a) auditory ossicles, (b) cochlea, (c) oval window, (d) round window, (e) tympanic membrane.256views
Textbook QuestionThe spiral organ is located in the_______of the internal ear. (a) utricle, (b) bony labyrinth, (c) vestibule, (d) cochlea.178views
Textbook Questiondentify the structures of the external, middle, and internal ear in the following figure. a. ___ b. ___ c. ___ d. ___ e. ___ f. ___ g. ___ h. ___ i. ___154views
Textbook QuestionAuditory information about the frequency and intensity of stimulation is relayed to the CNS over the cochlear nerve, a division of cranial nerve (a) IV, (b) VI, (c) VIII, (d) X.169views
Textbook QuestionDisplacement of stereocilia toward the kinocilium of a hair cell (a) produces a depolarization of the membrane, (b) produces a hyperpolarization of the membrane, (c) decreases the membrane permeability to sodium ions, (d) increases the membrane permeability to potassium ions, (e) does not affect the membrane potential of the cell.189views
Textbook QuestionDamage to the ampullary cupula of the lateral semicircular duct would interfere with the perception of (a) the direction of gravitational pull, (b) linear acceleration, (c) horizontal rotation of the head, (d) vertical rotation of the head, (e) angular rotation of the head.174views
Textbook QuestionThe malleus, incus, and stapes are the tiny bones located in the (a) external ear, (b) middle ear, (c) internal ear, (d) membranous labyrinth.160views
Textbook QuestionWhat are the three auditory ossicles in the middle ear, and what are their functions?269views
Textbook QuestionThe basic receptors in the internal ear are the (a) utricles, (b) saccules, (c) hair cells, (d) supporting cells, (e) ampullae.186views
Textbook QuestionMultiple Choice More than one choice may apply. Sounds entering the external acoustic meatus are eventually converted to nerve impulses via a chain of events including a. vibration of the eardrum. b. vibratory motion of the ossicles against the oval window. c. stimulation of hair cells in the spiral organ of Corti. d. resonance of the cupula.232views
Textbook QuestionMultiple Choice More than one choice may apply. Which of the following are paired incorrectly? a. Cochlear duct—cupula b. Vestibule—macula c. Ampulla—otoliths d. Semicircular duct—ampulla160views
Textbook QuestionMultiple Choice More than one choice may apply. Movement of which structure triggers bending of hairs of the hair cells in the spiral organ of Corti? a. b. c. d.176views
Textbook QuestionName the structures of the outer, middle, and inner ears, and give the general function of each structure and each group of structures.177views
Textbook QuestionSylvia Marcus, age 70, recently had surgery for otosclerosis. The operation was a failure and did not improve her condition. What was the purpose of the surgery, and exactly what was it trying to accomplish?193views
Textbook QuestionSound waves hitting the eardrum set it into motion. Trace the pathway of vibrations from the eardrum to the spiral organ of Corti, where the hair cells are stimulated.178views
Textbook QuestionOtoliths (ear stones) are a. a cause of deafness, b. a type of hearing aid, c. important in equilibrium, d. the rock-hard petrous part of the temporal bones.206views
Textbook QuestionThe structure that allows pressure in the middle ear to be equalized with atmospheric pressure is the a. pinna, b. pharyngotympanic tube, c. tympanic membrane, d. oval window.199views
Textbook QuestionWhich of the following is important in maintaining the balance of the body? a. visual cues, b. semicircular canals, c. the saccule, d. proprioceptors, e. all of these.153views
Textbook QuestionJuan tells his physician that he has been feeling dizzy, especially when he closes his eyes. He is asked to stand with his feet together and arms extended forward. As long as he keeps his eyes open, he exhibits very little movement. But when he closes his eyes, his body begins to sway a great deal, and his arms tend to drift together toward the left side of his body. Why does this occur?170views
Textbook QuestionNormal balance depends on information transmitted from a number of sensory receptor types. Name at least three of these receptors.180views
Textbook QuestionFor each of the following descriptions, indicate whether it applies to a macula or a crista ampullaris: inside a semicircular canal; contains otoliths; responds to linear acceleration and deceleration; has a cupula; responds to rotational acceleration and deceleration; inside the vestibule.199views
Textbook QuestionTaste buds are found on the a. anterior part of the tongue, b. posterior part of the tongue, c. palate, d. all of these.213views
Textbook QuestionMultiple Choice More than one choice may apply. Gustatory cells are a. bipolar neurons. b. multipolar neurons. c. unipolar neurons. d. epithelial cells.207views
Textbook QuestionMultiple Choice More than one choice may apply. Alkaloids excite gustatory hairs mostly at the a. tip of the tongue. b. back of the tongue. c. vallate papillae. d. fungiform papillae.152views
Textbook QuestionMultiple Choice More than one choice may apply. Cranial nerves that are part of the gustatory pathway include a. trigeminal. b. facial. c. hypoglossal. d. glossopharyngeal.200views
Textbook QuestionMrs. Garson has an immune disorder that causes dry mouth, and she complains to her doctor that she's lost her sense of taste. How might her symptoms be explained?178views
Multiple ChoiceWhich of the following correctly matches the sense to the type of stimulus it measures in the environment?501views10rank1comments