Light passes through the following structures in which order? Show
A) aqueous humor, cornea, lens, vitreous humor Sets with similar terms1 1) What is the main function of the rods in the eye? A) depth perception 2 2) What structure regulates the amount of light passing to the visual receptors of the eye? A) aqueous humor 3 3) Receptors for hearing are located in the ________. A)
cochlea 4 5) The oil component found in tears is produced by the ________. A) lacrimal glands 5 6) The receptor for static equilibrium is the ________. A) semicircular canals 6 7) Farsightedness is more properly called ________. A) myopia 7 9) Which of the following structures is not part of the external ear? A) pinna 8 10) Nerve fibers from the medial aspect of each eye ________. A) go to the superior colliculus only D) cross over to the opposite side at the chiasma 9 11) Ordinarily, it is not possible to transplant tissues from one person to another, yet corneas can A) is not a living tissue 10 12) The oval window is connected directly to which passageway? A) scala vestibuli 11 13) There are three layers of neurons in the retina. The axons of which of these neuron layers form A) bipolar cells 12 14) The first ʺway stationʺ in the visual pathway from the eye, after there has been partial A) superior colliculi B) lateral geniculate body of the thalamus 13 15) As sound levels increase in the spiral organ (of Corti), ________. A) outer hair cells stiffen the basilar membrane A) outer hair cells stiffen the basilar membrane 14 16) Which of the following is true about gustatory receptors? A) In order for a chemical to be sensed, it must be
hydrophobic. C) Complete adaptation occurs in about one to five minutes. 15 17) Taste buds are not found ________. A) in fungiform papillae 16 18) Select the correct statement about olfaction. A) Olfactory receptors have a high degree of specificity toward a single type of chemical. B) Some of the sensation of olfaction is actually one of pain. 17 19) Photoreceptors ________. A) replicate to replace damaged cells, in order to maintain normal vision B) package visual pigment in membrane-bound discs, which
increases the efficiency of 18 20) Olfactory glands function to ________. A) produce olfactory cells 19 21) U.S. employees must wear hearing protection at ________ dB or above. A) 100 20 22) The ciliary body does not ________. A) belong to the anterior chamber of the eye A) belong to the anterior chamber of the eye 21 23) What is a modiolus? A) bone in the center of a semicircular canal C) a bone pillar in the center of the cochlea 22 24) Which statement about malnutrition-induced night blindness is most accurate? A) The most common cause is vitamin D deficiency. B) Vitamin supplements will reverse degenerative changes 23 25) Dark adaptation ________. A) is much faster than light adaptation D) involves accumulation of rhodopsin 24 26) Conscious perception of vision probably reflects activity in the ________. A) thalamus B) occipital lobe of the cortex 25 27) The optic radiations project to the ________. A) medial retina 26 28) Visual inputs to the ________ serve to synchronize biorhythms with natural light and dark.
A) pretectal nuclei D) suprachiasmatic nucleus 27 29) Information from balance receptors goes directly to the ________. A) motor cortex C) brain stem reflex centers 28 30) Motion sickness seems to ________. A) respond best to medication taken after salivation and pallor begins D) result from mismatch between visual and vestibular inputs 29 31) In the uterus ________. A) the fetus cannot see and therefore visual cortical
connections are not made C) despite the fact that the fetus cannot see, functional visual cortical connections are 30 32) Most newborns ________. A) are myopic B) often use only one eye at a time 31 33) The blind spot of the eye is ________. A) where more rods than cones are found D) where the optic nerve leaves the eye 32 34) The first vestiges of eyes in the embryo are called ________. A) mesenchyme 33 35) Which pairing of terms is incorrectly related? A) frequency: loudness 34 36) Olfactory cells and taste buds are normally stimulated by ________. A) substances in solution A) substances in solution 35 37) Which of the following could not be seen as one looks into the eye with an ophthalmoscope? A) macula lutea 36 38) The cells of the retina in which action potentials are generated are the ________. A) rods and cones 37 39) During dark adaptation ________. A) the sensitivity of the retina decreases C) rhodopsin accumulates in the rods 38 40)
Tinnitis, vertigo, and gradual hearing loss typify the disorder called ________. 39 41) Which of the following is not a characteristic of olfactory receptor cells? A) They are ciliated. B) They are unipolar neurons. 40 42) An essential part of the maculae involved in static equilibrium is (are) the ________. 41 43) Which of the following is true about light and vision? A) Human photoreceptors respond to light in the 100-300 nm range. B) When we see the color of an object, all light is being absorbed by that object except for 42 44) The tarsal plate of the eyelid ________. A) is composed of
connective tissue surrounding a thin cartilage plate C) is connected to the levator palpebrae 43 45) Which of the following is true about photoreceptors? A) Rods absorb light throughout the visual spectrum but confer only gray tone vision. A) Rods absorb light throughout the visual spectrum but confer only gray tone vision. 44 46) Select the correct statement about equilibrium. A) The weight of the endolymph contained within the
semicircular canals against the B) Cristae respond to angular acceleration. 45 47) The eye muscle that elevates and turns the eye laterally is the ________. A) lateral rectus 46 48) The receptor membranes of gustatory cells are ________. A) basal cells 47 49) Light passes through the following structures in which order? A) vitreous humor, lens, aqueous humor,
cornea B) cornea, aqueous humor, lens, vitreous humor 48 50) Damage to the medial recti muscles would probably affect ________. A) refraction 49 51) Which statement about sound localization is not true? A) It requires processing at the cortical level. A) It requires processing at the cortical level. 50 52) As sound intensity increases, we hear the sound as a louder sound at the same pitch. This A) 540-Hz-receptive cells are particularly refractory B) cochlear cells that respond to the same pitch vary in responsiveness 51 53) Which of the following is not a possible cause of conduction deafness? A) impacted cerumen C) cochlear nerve degeneration 52 54) Visual processing in the thalamus does not contribute significantly to ________. A) depth perception 53 55) ________ is a disorder of the olfactory nerves. A) Uncinate fits
54 56) Visible light fits between ________. A) X rays and UV 55 57) Ceruminous glands are ________. A) saliva glands found at the base of the tongue B) modified apocrine sweat glands 56 Which of the following taste sensations is incorrectly matched to the chemicals that produce it? A) bitter- alkaloids B) salty- metal ions C) sour- acids D) sweet organic substances such as sugar and some lead salts E) umami- amino acids glutamate and lysine E) umami- amino acids glutamate and lysine 57 Seventy percent of all sensory receptors are located in the A) nose B) ears C) skin D) eye 58 What prevents the eyelids from sticking together when the eyes close? A) conjunctival fluid B) ciliary gland C) tarsal gland secretions D) lacrimal fluid What structure regulates the amount of light passing to the visual receptors of the eye?Iris: regulates the amount of light that enters your eye. It forms the coloured, visible part of your eye in front of the lens. Light enters through a central opening called the pupil.
What structure regulates the amount of light passing to the visual receptors of the eye quizlet?The function of the lens of the eye is to allow precise focusing of light on the retina.
What structure regulates the amount of light that passes?Iris: The iris is the colored part of the eye that surrounds the pupil. It regulates the amount of light that enters the eye.
What structure regulates the amount of light passing to the retina?The iris, or the colored part of your eye, regulates the amount of light passing through. From there, it then hits the lens, the transparent structure inside the eye that focuses light rays onto the retina.
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