LooseLeaf for Human Anatomy
5th Edition
ISBN: 9781259285271
Author: Michael McKinley Dr., Valerie O'Loughlin, Elizabeth Pennefather-O'Brien
Publisher: McGraw-Hill Education
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Question
Chapter 19, Problem 6MC
Summary Introduction
Introduction:
The eye is a spherical organ that measures about 2.5 centimeters in diameter. The eyes are situated into the orbit of the skull. The orbital space is also occupied by the lacrimal gland, extrinsic eye muscles, blood vessels, and the cranial nerves.
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The arrangement of tunics in the eye, from the innermost to outermost aspect of the eye, is
a. retina, vascular, fibrous.
b. vascular, retina, fibrous.
c. vascular, fibrous, retina.
d. retina, fibrous, vascular.
The outer tough coat of the eye is the a. retina. b. sclera. c. choroid. d. lens.
The fibrous tunic of the eye includes the
a. conjunctiva. c. choroid. e. retina.
b. sclera. d. iris.
Chapter 19 Solutions
LooseLeaf for Human Anatomy
Ch. 19 - How does a sensory receptor functions as a...Ch. 19 - What is difference between tonic and phasic...Ch. 19 - Prob. 3WYLCh. 19 - Prob. 4WYLCh. 19 - What stimuli affect mechanoreceptors and...Ch. 19 - How do unencapsulated receptors differ from...Ch. 19 - Prob. 7WYLCh. 19 - Which cranial nerves receive taste sensations from...Ch. 19 - What are the components and functions of the...Ch. 19 - What are the olfactory hairs and what is their...
Ch. 19 - Prob. 11WYLCh. 19 - Prob. 12WYLCh. 19 - Prob. 13WYLCh. 19 - What is the hyaloid canal, and what does it...Ch. 19 - What is the function of the auditory ossicles?Ch. 19 - Prob. 16WYLCh. 19 - In general, how are the hair cells in the spiral...Ch. 19 - Prob. 18WYLCh. 19 - Match each numbered item with the most closely...Ch. 19 - Prob. 1MCCh. 19 - Prob. 2MCCh. 19 - Prob. 3MCCh. 19 - Prob. 4MCCh. 19 - The tarsal glands secrete a. a high-salt fluid to...Ch. 19 - Prob. 6MCCh. 19 - a. gustatory receptors. b. chemoreceptors. c....Ch. 19 - Prob. 8MCCh. 19 - Prob. 9MCCh. 19 - a. It is part of the body labyrinth. b. It is...Ch. 19 - What are the classifications of sensory receptors...Ch. 19 - Prob. 2CRCh. 19 - Prob. 3CRCh. 19 - Describe the pathway by which olfactory stimuli...Ch. 19 - What structures in the wall of the eye help...Ch. 19 - Prob. 6CRCh. 19 - Prob. 7CRCh. 19 - Where are the tensor tympani and the stapedius...Ch. 19 - Prob. 9CRCh. 19 - Describe the pathway by which sound waves enter...Ch. 19 - Prob. 1DCRCh. 19 - Prob. 2DCR
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- Which of the following statements are true of the parts of the eye? (Read carefully and select all the correct statements.) A. Vitreous humor is reabsorbed into the canal of Schlemm. B. The radial muscles of the iris constrict the pupil. C. The white of the eye is formed by the sclera. D. The choroid layer absorbs light within the eyeball. E. The conjunctiva is kept moist by tears secreted by the lacrimal glands. F. The retina is the innermost layer of the eyeball. G. The ciliary muscle is a circular smooth muscle that changes the shape of the cornea. H. Aqueous humor is the tissue fluid of the eye; it nourishes the lens and cornea.arrow_forwardA bar of light in a specific part of the retina, with a particular length and orientation, is the most effective stimulus for a.retinal ganglion cells. b.lateral geniculate cells. c.simple cortical cells. d.complex cortical cells.arrow_forwardContraction of the smooth muscle in the ciliary body causes thea. lens to flatten. c. lens to become more spherical.b. pupil to constrict. d. pupil to dilate.arrow_forward
- 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.arrow_forwardWhich of the following components of the eye allows a person to focus on objects at various distances? a. The optic nerve b. The sclera c. The lens d. The photoreceptor cells. e. The vitreous humourarrow_forwardWhich of the following statements is/are correct about the visual system? A.Input from the left eye is processed exclusively in the right V1 cortex. B. Each point in the visual field is analyzed by both the right and left V1 cortices. C. The right visual hemifield projects to the right LGN. D. Two of the above statements are correct. E. None of the above statements are correct.arrow_forward
- 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 cellsarrow_forwardWhich of the following statements is correct A. The innermost layer of the retina contains mainly photoreceptors B. The axons that form the optic nerve emerge only from ganglion cells. C. Several types of ganglion cells spike whereas the others do not. D. Two of the statements are correct. E. All three statements are correct.arrow_forwardState the part of eye that constricts or dilates based on the amount of light in the environment. A. Cornea B. Iris C. Pupil D. Sclera Choose the correct order for the light transmission inside the eyes. A. Cornea → retina – lens → retina B. Cornea - pupil → lens → retina C. Lens → pupil → cornea → retina D. Pupil → cornea → lens → retinaarrow_forward
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