fill in blank. instead of opaque due to the parallel arrangement of its collagen fibers.b. The cornea is continuous with the sclera anteriorly but is translucentThis avascular layer allows__to pass into the eyeball.2. Layers of the Eyeball: The Vascular Layer is the middle layer that liesdirectly beneath the cornea and sclera.a. The choroid is the most extensive component, which containscapillaries and a pigment. What is the function of this pigment?b. The ciliary body, continuous with the choroid body anteriorly,contains a ring of smooth muscle that surrounds the lens. Suspensoryligaments connect the_to thewhichallows for contraction and relaxation that changes the shape of the lensto focus light.c. The iris, the colored region of the anterior eye, is an extension of thevascular layer. The amount of the pigmentdetermines iris color.d. The pupil is the opening found in the center of the iris through whichenters the eyeball.3. Layers of the Eyeball: The Neural Layer: the innermost layer of the eyeballis known as the retina, which is an incomplete layer found only deep to thechoroid. The retina is composed of two layers and the following featuresa. Pigmented epithelium is a thin, superficial layer that reduces lightscattering and nourishes the photoreceptors.b. Photoreceptor cells and the cells that form the optic nerve form thedeep layer. Photoreceptor cells found in the retina detect and transducelight stimuli into electrical signals. Theis aregion of the retina in which a large number of photoreceptors arefound allowing for detailed vision and the ability to focus on an object.207Copyright 2016 Pearson Education, Inc

The Eye is shaped like a round ball, with a slight bulge at the front. The eye has three main…

Answered: What is the function of this pigment?

Science

Biology

What is the function of this pigment?

An Illustrated Guide To Vet Med Term

4th Edition

ISBN:9781305465763

Author:ROMICH

Publisher:ROMICH

Chapter14: Seeing And Hearing

Section: Chapter Questions

Problem 1M

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2. Match each eye structure with it's correct description Activity 4 Activity 5
Match the function with the correct structure. 1. Absorbs scattered light Sclera 2. Photoreceptors of the retina responsible for Vitreous humour colour vision 3. Refracts light rays into the eye Ciliary muscles 4. Supports the eyeball with the fluid they Iris contain 5. Alters the shape of the lens to promote Cones focusing Lens 6. Protects and supports the eyeball 7. Area that contains a high density of cones Choroid 8. Photoreceptors of the retina sensitive to dim Fovea centralis light 9. Focuses the light rays on the fovea centralis Rods 10. Regulates the amount of light that enters Cornea the eye
what statements are false about the Accessory Structures of the Eye? 1. The eyebrows prevent perspiration from entering the eyes and help shade the eyes. b. The eyelids consist of five tissue layers. They protect the eyes from foreign objects and help lubricate the eyes by spreading tears over their surface. c. The conjunctiva covers the inner eyelid and the exterior part of the eye. = Exterior should be anterior d. Lacrimal glands produce tears, which flow across the surface of the eye. Excess tears enter the lacrimal canaliculi and reach the nasal cavity through the nasolacrimal canal. Tears lubricate and protect the eye.
A - If only the first statement is correct. B - If only the second statement is correct. C - If both statements are correct. D - If both statements are incorrect. 1. A. The pupil is transparent but appears to be black because of the melanin found in the choroid. B. The pupil constricts and relaxes as it controls the amount of light that passes through.
Label Figure 8.1 below by choosing the correct letter of the part for each item.
Explain all point of question with proper answer) .
Identity Identify the pointed structure a. JG cells b. Intramesangial cells c. Extramesangial cells d. Macula Densa e. Mesanglia cells f. Macula lutea
Fill in
Match the terms in column A with the descriptions in column B. Column B1. posterior five-sixths of middle or vascular tunic2. white part of outer tunic3. transparent anterior portion of outer tunic4. inner lining of eyelid5. secretes tears6. empties into nasal cavity7. fills posterior cavity of eye8. area where optic nerve originates9. smooth muscle that controls light intensity10. fills anterior and posterior chambers of the anterior cavity of the eye11. contains visual receptors called rods and cones12. connects lens to ciliary body13. causes lens to change shape14. antibacterial agent in tearsColumn Aa. aqueous humorb. choroid coatc. ciliary muscled. conjunctivae. corneaf. irisg. lacrimal glandh. lysozymei. nasolacrimal ductj. optic diskk. retinal. scleram. suspensory ligamentn. vitreous humor
Review & Practi Now available in MasteringA&P Ex Physiology of the Ear Name Date Section A. Matching Match each description listed on the left with its correct structure on the right. 1. maculac A. loss of balance 2. cristae B. site of auditory receptors C. vibrates oval window D. trar.smits sound wave to auditory ossicles E. receptors for static equilibrium F. dissipates sound energy G. receptors for dynamic equilibrium H. loss of nerve function I. damage to tympanic membrane 3. frequency of sound 4. nerve deafness 5. conduction deafness 6. cochlca 7. stapes 8. round window 9. tympanic membrane 10. nystagmus J. eye movements during rotation 11. amplitude K. volume of a sound 12. vertigo L. pitch of a sound B. Short-Answer Questions 1. Describe the process of hearing. 2. Explain how sound waves striking the tympanic membrane result in movement of fluids in the inner ear. 3. Describe the receptors for dynamic and static equilibrium. 4. What is the range of sound frequencies that humans…
Label these illustrations by choosing the letter of the correct label from the given set of choices.