6. After focusing on the screen, there should have been a difference upon opening your eyes after closing your eyes for 90 instead of 10 seconds. What was this difference? EXPLAIN the results, including what happened to the ciliary muscles and lens. Note: If your results were atypical, you should also explain what should have happened and why.

6. After focusing on the screen, there should have been a difference upon opening your eyes after closing your eyes for 90 instead of 10 seconds. What was this difference? EXPLAIN the results, including what happened to the ciliary muscles and lens. Note: If your results were atypical, you should also explain what should have happened and why.

Fundamentals of Sectional Anatomy: An Imaging Approach

2nd Edition

ISBN:9781133960867

Author:Denise L. Lazo

Publisher:Denise L. Lazo

Chapter3: Face

Section: Chapter Questions

Problem 10RQ

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Similar questions

1) When the ciliary muscle in the amniote eye contracts its diameter ______ and the tension of the zonular fibers connecting it to the lens is released. This causes the lens to ______. A) increases, be stretched to a more flattened state" B) increases, be squeezed to a more rounded shape" C) decreases , be stretched to a more flattened shape" D) decreases, rebound to a more rounded shape"
4. (a) David cannot view objects clearly if they are further than 0.80 m. His lens-to-retina distance is 2.0 cmWhat is the problem with his eyes? What should be the optical power of his corrective glasses? Neglectthe distance between the glasses and his eyes.
1) Structures essential to the dectection of linear acceleration include the _____. A) tympanic membrane B) cupula C) otoliths D) cochlea
7) List and discuss the parts of the eye.
5. My cat Mia has poor color vision, but can see very well in dark environments. What characteristic of her retina could best explain this? a. It mostly has ON bipolar cells b. It mostly has OFF bipolar cells c. It has many more rods than cones, particularly around the fovea d. It has many more cones than rods, particularly around the fovea e. It has very few photoreceptors and many more retinal ganglion cells
1) Teleost focus on nearby objects by _____. A) moving their lens forward in their eye further from the retina B) moving their lens backward in their eye closer to the retina C) contracting their ciliary muscle to release tension on the zonular fibers D) contracting their ciliary muscle to increase tension on the zonular fibers E) relaxing their ciliary muscle to put tension on the ciliary fibers
1. Describe the role of the lens in vision.
2. How does the eye perceive size, depth and relative distances?3. With the aid of a diagram, illustrate how the visual angle is calculated.
1.) The middle ear chamber is an air-filled “hole in the head”, which is adapted to allow free movement of the tympanum as it vibrates. Unless the pressure in the chamber is equal to atmospheric pressure outside, the tympanum will be stretched outward or inward, impeding its vibration and causing discomfort or pain. When moving up in the elevator of a tall building, the surrounding atmospheric pressure is: a) increasing causing air to enter the middle ear chamber through the Eustachian tube. B.) increasing causing air to enter the middle ear chamber through the auditory canal C.)decreasing causing air to leave the middle chamber through the Eustachian tube D.) decreasing causing air to leave the middle ear chamber through the auditory canal
4. Describe the roles of the retina and the optic nerve in vision.
8) List and discuss the parts of the ear, be sure to include the three small bones of the middle ear.
1. Which list includes 3 structures of the outer ear? A) A membrane that transmits sound waves B) Pinna, Tympanic Membrane, Auditory Canal C) Auricle, Pinna, Semicircular Canals D) Incus, Vestibulocochlear Nerve, Auditory Canal E) Oval Window, Round Window, Semicircular Canals F) Malleus, Incus, Stapes 2. Select the best answer. Which structure is primarily responsible for dynamic equilibrium? A) Tympanic membrane B) Eustachian tube C) Auditory canal D) Semicircular canals E) Vestibule F) Stapes G) Malleus H) Pinna 3. Select all that apply when your eye is focused on something across the room: A) suspensory ligaments loosen B) The lens is more flat C) The lens is more convex (buldged in the centre) D) suspensory ligaments are taut E) ciliary muscle contracts F) ciliary muscle relaxes