Vision Flashcards
Rod cells are located in greater density at _____.
Around the edge of fovea
Night vision is best mediated by the _____ cell
Rod, they are best equipped for vision at night
The most common vision receptor cells are _____.
Rods (most plentiful receptor cells in the retina)
Which retinal cells are designed to encode vision in conditioned of bright lights?
Cones
_____ cells are found in greater density in the fovea
Cones
Colour is transduced by the _____ cells
Cones. They are specialised to transduce color.
The flow of information in the retina moves from _____ on its way to the optic nerve.
Receptor cells to bipolar cells to ganglion cells
What is the purpose of retina?
It compresses, encodes, integrates, and converges visual information
The optic nerves leaves the back of the eyes at a spot called the _____.
Optic disk
A blind spot in the retina is formed by the _____
Exiting optic nerve. It creates a blindspot by interrupting the receptor cell layer of the retina
The _____ and _____ regulates directly the amount of light that enters the eye.
Pupil and Iris
_____ involves the adjustment of the size and shape of the lens to focus far and near objects on the retina.
Accommodation
When light enters the eye, it first passes through the _____.
Cornea
The central region of the retina that provides the most acute vision is the _____
Fovea. It provides the highest resolution of visual processing in the retina
What is a blind spot? Describe.
A blind spot is located at the back of the eye, formed by the optic disk. It is caused by the absence of visual receptor cells and the collection of axons leaving the eye
Color is to wavelength as saturation is to _____.
Purity.
Muscles that move the eyes are important for ____.
Orienting to and processing visual events.
What does optic nerves do?
It conveys visual information to the visual pathways
Where is the lens located and list down its purposes.
The lens is located behind the cornea, focuses and inverts a visual image on the retina at the back of the eye.
*may become cloudy with age
The blind spot of the eye is adjusted for by the ____.
Visual Cortex
