23. In reference to the nerve fibers in the optic chiasma A)nerve fibers from th
ID: 3518667 • Letter: 2
Question
23. In reference to the nerve fibers in the optic chiasma A)nerve fibers from the nasal halves of both retinas cross. B) nerve fibers from the temporal halves of both retinas oross C) the right occipital lobe recelves only the loft eye's information. D) the left occipital lobe recelves only the right eye's information. E) all of the above statements are true 24. Which of the following structures provides blood for the eye and absorbs scattered light? A) chorold 8) cliary body C) comea D) inis E) sclera 25. A normal eye is also known as a (an) A) astigmatic oye B) emmetropic eye. D) presbyopic eye E) none of the above. 26. In humans, both eyes focus on only one set of objects; this characteristic is known as A) double monocular vision. B) double binocular vision. C) double vision. D) single binocular vision. E) single monocular vision. 27. Humans have the sharpest vision at which location? A) central fovea B) choroid C) ciliary body D) iris E) optic disc 28. What is the name of retinal in darkness, and what is ts name In light? A) cils - retinal, delta -retinal B) cis retinal, beta - retinal C) cis retinal, trans -retinal D) trans -retinal, alpha - retinal E) trans- retinal, delta - retinal 29. The external (outer) ear A) consists of the eustachian tube, the tympanic membrane, and the auricle. B) consists of an auricle, which is a flap of fibrocartilage. C) contains the external auditory canal, which is in the sphenoid bone. D) has hair cells in is auditory canal and specialized glands, ceruminous glands E) all of the above statements are true.Explanation / Answer
23) E all the options are correct .
24)A choroid
It is layer of eye behind retina which contains blood vessels that nourishes the retina provide oxygen and nutrient
25)B emmetropic eye
These eye do not require vision correction.emmetropia means ideal condition where light rays coming to eyes from a distance come to a perfect focus in retina
26)D single binocular vision
It is a state of vision which is achieved by both the eyes so that separate and slightly indifferent image arising in both the eyes arise as single image by fusion.
27)A central fovea.
It is centre of eyes sharpest vision.it contains only cones.it appears as depression
29)B auricle is a flap of fibrocartilage
The external ear contains auricle, auditory canal,eardrum and auricle is made of fibrocartilaginous flap.
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