Question 1

The proportion of cones is greatest in which part of the retina?

Accepted Answer

The fovea is the part of the retina that contains the greatest concentration of cones, which are responsible for color vision and sharp detail. The periphery contains more rods, which are responsible for detecting light and dark but not color or detail, and the blind spot is an area where there are no photoreceptor cells at all. The cornea is not part of the retina.

Question 2

When you see something,

Accepted Answer

When we see something, light rays reflected from the objects enter our eyes and are focused by the lens onto the retina at the back of our eye. This process involves energy going into our eyes, suggesting that choice B is the correct answer.

Question 3

What happens during vision?

Accepted Answer

A

Question 4

The adjustable opening in the eye, through which light passes, is the

Accepted Answer

The pupil is the adjustable opening in the eye, through which light passes.

Question 5

Which of our senses detects part of the electromagnetic spectrum?

Accepted Answer

Our sense of vision detects part of the electromagnetic spectrum, specifically the visible light spectrum.

Question 6

The interpretation of a pattern of stimuli from the environment (as opposed to mere conversion of energy into a pattern of responses) is called

Accepted Answer

Perception is the process of interpreting sensory information from the environment, and involves the integration and organization of sensory input into meaningful representations. Sensation refers to the initial steps in the process of sensing, such as the detection and conversion of physical energy into neural signals. Assimilation and accommodation are terms used in the context of cognitive development, and refer to the processes by which individuals incorporate new information into their existing cognitive structures or modify their existing structures to accommodate new information.

Question 7

Our sense organs are packed with specialized cells called __________ that convert environmental energies into signals for the nervous system.

Accepted Answer

Receptors are specialized cells in our sense organs that are responsible for converting various forms of energy into electrical signals that can be interpreted by the nervous system.

Question 8

Which of the following is necessary for vision?

Accepted Answer

Energy (in the form of light) needs to come into the eyes in order for vision to occur. The eyes then translate this energy into signals that the brain can interpret as visual information. Choices A, C, and D are incorrect as they do not accurately describe the process of vision.

Question 9

The continuum of all frequencies of radiated energy, from gamma rays to TV transmissions, is referred to as

Accepted Answer

The continuum of all frequencies of radiated energy, from gamma rays to TV transmissions, is referred to as the electromagnetic spectrum.

Question 10

What makes the electromagnetic radiation from 400 nm to 700 nm visible?

Accepted Answer

Our visual receptors (cones) are adapted to respond to electromagnetic radiation in the range of 400-700 nm, which is referred to as the visible spectrum. This range includes different colors that correspond with different wavelengths, such as violet, blue, green, yellow, orange, and red.

Question 11

If you want to see something in detail you focus it on the

Accepted Answer

The fovea is the part of the retina responsible for detailed vision and is located at the center of the macula. It has the highest concentration of cone cells, which are responsible for color vision and high acuity (sharpness) vision. Focusing an object on the fovea will provide the clearest image and greatest level of detail.

Question 12

When you see something,

Accepted Answer

When we see an object, the object emits or reflects light energy that enters our eyes, causing a chemical reaction in the light-sensitive cells in our retina, which sends electrical signals to our brain, resulting in visual perception. Therefore, energy comes from the object into our eyes.

Question 13

The conversion of energy from the environment into a pattern of responses by the nervous system (as opposed to interpreting that information) is called

Accepted Answer

The conversion of energy from the environment into a pattern of responses by the nervous system is called sensation. Perception, on the other hand, involves the interpretation of this sensory information. Assimilation and accommodation are terms used in Jean Piaget's theory of cognitive development and are not related to sensory processes.

Question 14

As light passes through the eye it is focused by the __________, which always focuses light in the same way, and the __________, which is flexible and enables focusing on objects at different distances by varying its thickness.

Accepted Answer

The cornea always focuses light in the same way, and the lens is flexible and enables focusing on objects at different distances by varying its thickness. The aqueous humor and vitreous humor are fluids found in the eye that help with its overall structure and function. The fovea is a small point in the retina where visual acuity is highest, and the iris and pupil control the amount of light that enters the eye.

Question 15

Which part of the electromagnetic spectrum are humans capable of detecting with the unaided eye?

Accepted Answer

Humans are only capable of detecting a small portion of the electromagnetic spectrum, specifically the range of wavelengths from approximately 400 to 700 nanometers, which corresponds to the colors of the visible spectrum.

Question 16

Compared to the periphery of the eye, the fovea has better perception of

Accepted Answer

The fovea has a high concentration of cone cells, which are responsible for color vision and perception of fine detail. Thus, it can perceive color and detail better than the periphery of the eye. It does not necessarily have better perception of movement or faint light.

Question 17

Our ability to change the focus of our eyes to see objects at different distances depends on changes in the

Accepted Answer

The ability to change the focus of our eyes to see objects at different distances depends on changes in the thickness of the lens, which is also known as accommodation. The lens changes shape in response to signals from the ciliary muscles, allowing us to focus on objects that are both near and far. Changes in the position of the retina, frequency of impulses in the optic nerve, or width of the pupil do not directly affect our ability to change focus.

Question 18

Which part of the human retina has the best color vision?

Accepted Answer

The fovea is the part of the retina that has the highest concentration of cone cells, which are responsible for color vision. Therefore, the fovea has the best color vision compared to other parts of the retina.

Question 19

Which part of the eye changes its shape to enable us to focus first on a distant object and then on a nearby object?

Accepted Answer

The lens is the part of the eye that changes its shape to enable us to focus first on a distant object (by flattening out) and then on a nearby object (by becoming more curved). The retina is the layer of tissue at the back of the eye that converts light into neural signals, the cornea is the clear front part of the eye that helps to focus light, and the pupil is the opening in the center of the iris that regulates the amount of light that enters the eye. Therefore, D is the correct answer.

Question 20

The central part of the human retina is called the

Accepted Answer

The fovea is the central area of the retina and is responsible for sharp, detailed vision. It contains a high concentration of cone cells, which are responsible for color vision and visual acuity. The basilar membrane and cochlea are parts of the ear involved in hearing, while the blind spot is a small area of the retina with no photoreceptor cells.

Quiz 4: Sensation and Perception

The proportion of cones is greatest in which part of the retina?

When you see something,

What happens during vision?

The adjustable opening in the eye, through which light passes, is the

Which of our senses detects part of the electromagnetic spectrum?

The interpretation of a pattern of stimuli from the environment (as opposed to mere conversion of energy into a pattern of responses) is called

Our sense organs are packed with specialized cells called __________ that convert environmental energies into signals for the nervous system.

Which of the following is necessary for vision?

The continuum of all frequencies of radiated energy, from gamma rays to TV transmissions, is referred to as

What makes the electromagnetic radiation from 400 nm to 700 nm visible?

If you want to see something in detail you focus it on the

When you see something,

The conversion of energy from the environment into a pattern of responses by the nervous system (as opposed to interpreting that information) is called

As light passes through the eye it is focused by the , which always focuses light in the same way, and the , which is flexible and enables focusing on objects at different distances by varying its thickness.

Which part of the electromagnetic spectrum are humans capable of detecting with the unaided eye?

Compared to the periphery of the eye, the fovea has better perception of

Our ability to change the focus of our eyes to see objects at different distances depends on changes in the

Which part of the human retina has the best color vision?

Which part of the eye changes its shape to enable us to focus first on a distant object and then on a nearby object?

The central part of the human retina is called the