Podcast
Questions and Answers
Which type of cells enhance the signal processing between bipolar and ganglion cells?
Which type of cells enhance the signal processing between bipolar and ganglion cells?
What is the ratio of rods to cones in the retina, except in the fovea?
What is the ratio of rods to cones in the retina, except in the fovea?
What is the function of rods in vision?
What is the function of rods in vision?
What is the function of cones in vision?
What is the function of cones in vision?
Signup and view all the answers
What is the visual pigment for rod cells?
What is the visual pigment for rod cells?
Signup and view all the answers
What is the visual pigment for cones that respond to green wavelengths?
What is the visual pigment for cones that respond to green wavelengths?
Signup and view all the answers
What happens to the membrane potential of a rod cell when light activates rhodopsin?
What happens to the membrane potential of a rod cell when light activates rhodopsin?
Signup and view all the answers
Which structure in the eye is responsible for bending light rays and modifying its shape to focus the light on the retina?
Which structure in the eye is responsible for bending light rays and modifying its shape to focus the light on the retina?
Signup and view all the answers
What is the term used to describe the ability of the lens to modify its shape to adjust the focal length?
What is the term used to describe the ability of the lens to modify its shape to adjust the focal length?
Signup and view all the answers
Which visual deficit occurs when the focal point falls behind the retina?
Which visual deficit occurs when the focal point falls behind the retina?
Signup and view all the answers
What is the term used to describe the process of converting light stimulus into a change in membrane potential within the retina?
What is the term used to describe the process of converting light stimulus into a change in membrane potential within the retina?
Signup and view all the answers
Which cells sit between the light stimulus and the photoreceptor cells in the retina?
Which cells sit between the light stimulus and the photoreceptor cells in the retina?
Signup and view all the answers
In which area of the retina do photoreceptors have direct access to light and reflect the most visual acuity?
In which area of the retina do photoreceptors have direct access to light and reflect the most visual acuity?
Signup and view all the answers
What is the term used to describe near-sightedness, where the focal point falls in front of the retina?
What is the term used to describe near-sightedness, where the focal point falls in front of the retina?
Signup and view all the answers
Which of the following is NOT one of the three steps involved in the process of vision?
Which of the following is NOT one of the three steps involved in the process of vision?
Signup and view all the answers
Which cranial nerve controls the six eye muscles that innervate the eye?
Which cranial nerve controls the six eye muscles that innervate the eye?
Signup and view all the answers
Which chamber of the eye is filled with a substance called aqueous humor?
Which chamber of the eye is filled with a substance called aqueous humor?
Signup and view all the answers
What is the function of the lacrimal gland in the eye?
What is the function of the lacrimal gland in the eye?
Signup and view all the answers
Which part of the eye is a clear and gelatinous matrix that maintains the shape of the eyeball?
Which part of the eye is a clear and gelatinous matrix that maintains the shape of the eyeball?
Signup and view all the answers
Which structure of the eye can change in diameter in response to changes in light?
Which structure of the eye can change in diameter in response to changes in light?
Signup and view all the answers
Through which structure do the nerves (optic nerve) exit the eye?
Through which structure do the nerves (optic nerve) exit the eye?
Signup and view all the answers
Which of the following is true about the light-on response in bipolar cells?
Which of the following is true about the light-on response in bipolar cells?
Signup and view all the answers
What is the role of ganglion cells in the visual system?
What is the role of ganglion cells in the visual system?
Signup and view all the answers
Where do the optic nerves cross in the visual system?
Where do the optic nerves cross in the visual system?
Signup and view all the answers
Which region of the brain is responsible for constricting the pupils in response to light?
Which region of the brain is responsible for constricting the pupils in response to light?
Signup and view all the answers
How does visual information leave the nuclei and reduce the amount of light entering both eyes?
How does visual information leave the nuclei and reduce the amount of light entering both eyes?
Signup and view all the answers
What is the role of the pretectum in the visual system?
What is the role of the pretectum in the visual system?
Signup and view all the answers
Where is visual information sent after the optic chiasm?
Where is visual information sent after the optic chiasm?
Signup and view all the answers
What is the function of the lateral geniculate body in the visual system?
What is the function of the lateral geniculate body in the visual system?
Signup and view all the answers
What is the pupillary reflex?
What is the pupillary reflex?
Signup and view all the answers
