The highest density of cone cells is found in: a. the crista ampullaris. b. the optic disc. c. the fovea centralis. d. the chorion. e. the basilar membrane
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The highest density of cone cells is found in: a. the crista ampullaris. b. the optic disc. c. the fovea centralis. d. the chorion. e. the basilar membrane
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- The tube that connects the throat to the ear is called thea. pinna.b. eustachian.c. cochlear.d. auditory.Mark 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. b. The stapes is attached to the oval window. c. The auditory canal is separated from the middle ear by the round window. d. The cochlear duct is filled with perilymph. e. The semicircular ducts are connected to the utricle, and the cochlear duct is continuous with the saccule. f. The spiral organ is located in the scala tympani.Which of the following is accurate about the maculae of the vestibular apparatus? a. They detect rotational movements of the head. b. They are located in the semicircular canal. c. Nerve signals are generated when the otolithic membrane bends the stereocilia of the hair cells. d. They are the organs of hearing.
- which statements are true about the Auditory Structures and their Functions a. The middle ear is connected to the mastoid air cells. b. The inner ear has three parts: the semicircular canals; the vestibule, which contains the utricle and the saccule; and the cochlea. c. The cochlea is a circular-shaped canal within the temporal bone. d. The cochlea is divided into two compartments by the vestibular and basilar membranes. The scala vestibuli and scala tympani contain perilymph. The cochlear duct contains endolymph and the spiral organ (organ of Corti).which statements is false about the Auditory Structures and their Functions a. The middle ear is connected to the mastoid air cells. b. The inner ear has three parts: the semicircular canals; the vestibule, which contains the utricle and the saccule; and the cochlea. c. The cochlea is a circular-shaped canal within the temporal bone. d. The cochlea is divided into two compartments by the vestibular and basilar membranes. The scala vestibuli and scala tympani contain perilymph. The cochlear duct contains endolymph and the spiral organ (organ of Corti).Choose the structure that corresponds to each statement. a. bipolar cell layer e. macula lutea b. central fovea f. optic disc c. cones g. photoreceptor layer d. ganglion cell layer h. rods 1. has the highest density of cones in the retina 2. axons form optic nerve 3. does not contain photoreceptors; blind spot 4. photoreceptor that allows us to see color 5. contains rods and cones 6. the center of the neural portion of the retina 7. photoreceptor used in night vision 8. rods and cones synapse on these cells
- Which of the following statements are true of the ear? (Read carefully and select all the correct statements.) A. The cochlea contains the receptors for hearing. B. The auditory bones, in the order they vibrate, are the malleus, incus, and stapes. C. The nerves for hearing and equilibrium are the ninth cranial nerves. D. The eardrum is at the end of the ear canal. E. The receptors that detect movement of the head are hair cells in the organ of Corti. F. The four semicircular canals have hair cells that respond to gravity. G. Air pressure in the middle ear cavity is regulated by the mastoid sinus. H. The auditory areas are in the temporal lobes.Name the structure that the arrow is pointing at.A. ThalamusB. PutamenC. Internal capsule D. Head of caudate nucleusE. Globus pallidusWhich of the following structures of the ear is associated with sensing balance and gravity?a. cochleab. ear bones (the ossicles)c. utricled. eardrum
- A 53 year old woman has a drooping eyelid. When the lid is forcefully elevated, the pupil is directed downward and laterally; there is no superior or medial movement. The pupil is dilated and unresponsive to light. Her condition is most likely caused by a lesion involving which of the following? A.superior cervical ganglion B.oculomotor nerve only C.trochlear nerve only D.trochlear and oculomotor nerves E.abducens nerve only F.abducens and oculomotor nerveswhich statements are true about the Auditory Structures and Functions a. The external ear consists of the auricle and external acoustic meatus. b. The middle ear connects the external and inner ears. The tympanic membrane is stretched across the external acoustic meatus. c. The malleus, incus, and stapes connect the tympanic membrane to the oval window of the outer ear. d. The auditory tube connects the middle ear to the pharynx and functions to equalize pressure.Which of the following statements are true of the physiology of vision? (Read carefully and select all the correct statements.) A. Cones are the receptors for color. B. The lens adjusts for distant vision, and the cornea adjusts for near vision. C. The optic nerve is formed by the ganglion neurons of the choroid layer. D. For near vision, the pupils dilate and the eyes converge. E. The optic chiasma is a crossing of optic nerve fibers that contributes to binocular vision. F. The visual areas are in the occipital lobes of the cerebrum. G. The area of the retina for the best color vision is the optic disc. H. Rods are most numerous at the periphery of the retina.
