Podcast
Questions and Answers
What are the layers of the eye, listed from deep to superficial?
What are the layers of the eye, listed from deep to superficial?
- Sclera, Choroid, Retina
- Retina, Choroid, Sclera (correct)
- Cornea, Aqueous Humor, Lens
- Retina, Lens, Cornea
Choose the true statement.
Choose the true statement.
- Cones have a more convergent neural circuit
- Cones enable you to see in low light settings
- There are more cones than rods in the eye
- Cones are concentrated in the fovea and are less dense in the periphery (correct)
- Rods function to detect colour
Sympathetic nerves cause pupil constriction, whereas parasympathetic nerves cause dilation.
Sympathetic nerves cause pupil constriction, whereas parasympathetic nerves cause dilation.
False (B)
Which of the following is the most important contributor to intraocular pressure?
Which of the following is the most important contributor to intraocular pressure?
In which pathology might you see "cotton wool spots" on the retina when inspecting with an ophthalmoscope?
In which pathology might you see "cotton wool spots" on the retina when inspecting with an ophthalmoscope?
In which lobe is the visual association area found?
In which lobe is the visual association area found?
Which of the following is NOT a part of the vascular tunic?
Which of the following is NOT a part of the vascular tunic?
A cross-section of an eyelid would include all of the following except:
A cross-section of an eyelid would include all of the following except:
When viewing an object close to your eyes, which of the following are required for proper image formation on the retina? 1. Increased curvature of the lens 2. Contraction of the ciliary muscle 3. Divergence of the eyeballs 4. Refraction of light at the anterior and posterior surfaces of the cornea 5. Constriction of the pupil by contraction of the extrinsic eye muscles.
When viewing an object close to your eyes, which of the following are required for proper image formation on the retina? 1. Increased curvature of the lens 2. Contraction of the ciliary muscle 3. Divergence of the eyeballs 4. Refraction of light at the anterior and posterior surfaces of the cornea 5. Constriction of the pupil by contraction of the extrinsic eye muscles.
Irregular curvature of the lens or cornea is known as:
Irregular curvature of the lens or cornea is known as:
Which of the following is NOT associated with the retina?
Which of the following is NOT associated with the retina?
Which of the following helps the eye focus on near objects?
Which of the following helps the eye focus on near objects?
After the process of bleaching, which form of retinal can be found attached to the opsin?
After the process of bleaching, which form of retinal can be found attached to the opsin?
Which of the following statements is incorrect?
Which of the following statements is incorrect?
What is the correct pathway of tears, from the site of formation to the entrance to the nose?
What is the correct pathway of tears, from the site of formation to the entrance to the nose?
Flashcards
Eye Layers (Deep to Superficial)
Eye Layers (Deep to Superficial)
The layers of the eye, from deep to superficial, are the choroid, retina, and sclera.
Cone Distribution
Cone Distribution
Cones are concentrated in the fovea and are less dense in the periphery of the retina.
Pathway of Tears
Pathway of Tears
Tears flow from the lacrimal gland, through excretory lacrimal ducts, across the surface of the conjunctiva, and into the nasolacrimal duct via the lacrimal puncta and canals.
Intraocular Pressure
Intraocular Pressure
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Cotton Wool Spots
Cotton Wool Spots
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Visual Association Area
Visual Association Area
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Vascular Tunic
Vascular Tunic
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Cross-section of an eyelid
Cross-section of an eyelid
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Focusing on Near Objects
Focusing on Near Objects
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Astigmatism
Astigmatism
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Structures of the Eye
Structures of the Eye
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Focusing on Near Objects
Focusing on Near Objects
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Retinal After Bleaching
Retinal After Bleaching
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Retinal and Photopigments
Retinal and Photopigments
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Study Notes
- Layers of the eye, from deep to superficial, are the choroid, retina, and sclera.
- Cones are concentrated in the fovea and are less dense in the periphery.
- The pathway of tears, from site of formation to entrance to nose, involves the lacrimal gland, excretory lacrimal duct, nasolacrimal duct, surface of the conjunctiva, and lacrimal puncta and lacrimal canals.
- Sympathetic nerves cause pupil dilation, while parasympathetic nerves cause constriction.
- The most important contributor to intraocular pressure is aqueous humour.
- "Cotton wool spots" on the retina, when inspecting with an ophthalmoscope, may indicate a specific pathology.
- The visual association area is found in the occipital lobe.
- The pupil is not part of the vascular tunic.
- A cross-section of an eyelid includes the tarsal gland, epithelium, muscle fibers of levator palpebrae and conjunctiva.
- When viewing an object close to the eyes, proper image formation on the retina requires increased curvature of the lens, contraction of the ciliary muscle, and refraction of light at the anterior and posterior surfaces of the cornea.
- Structures involved in the visual pathway include the optic tract, ganglion cells, cornea, lens, bipolar cells, optic nerve, visual cortex, vitreous body, optic chiasm, aqueous humor, pupil, photoreceptors, and thalamus.
- The pupil is not part of the vascular tunic.
- A cross-section of an eyelid does not include the tarsal plate.
- Irregular curvature of the lens or cornea is known as astigmatism.
- Granule cells are not associated with the retina.
- Increasing the refractive power of the lens helps the eye focus on near objects.
- After the process of bleaching, trans-retinal can be found attached to the opsin.
- Retinal is a derivative of vitamin C is incorrect.
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