Question 1

When an internal pain is felt in a surface region of the skin, it is called

Accepted Answer

Referred pain occurs when pain originating in an internal organ is perceived as coming from a part of the skin (often at a different location). This happens because of the way pain signals from internal organs and those from the skin share common neural pathways to the brain.

Question 2

Taste buds and olfactory cells are considered

Accepted Answer

Taste buds and olfactory cells both respond to chemical stimuli, making them chemoreceptors.

Question 3

Which cutaneous receptors are concentrated in the fingertips and palms?

Accepted Answer

Meissner corpuscles are responsible for light touch and are found in high concentrations in the fingertips and palms. Pacinian corpuscles are deep pressure receptors, Ruffini endings detect stretching and distortion, root hair plexus detect hair movement, and free nerve endings detect pain and temperature changes.

Question 4

The doctor tells you that you have anosmia. What is your problem?

Accepted Answer

Anosmia is the medical term for loss of the sense of smell.

Question 5

The olfactory bulbs have a direct connection with what part of the brain?

Accepted Answer

The olfactory bulbs have a direct connection with the limbic system, which is known for processing emotions, memory, and motivation. This connection may explain why smells are often associated with strong emotional reactions and memories.

Question 6

Which health problem is associated with a decrease in the ability to taste certain foods?

Accepted Answer

All of the listed conditions can affect a person's ability to taste. Allergies and upper respiratory tract infections can lead to congestion and inflammation, affecting the sense of smell and, indirectly, taste. Brain tumors, depending on their location, can impact the neural pathways responsible for taste. Exposure to certain drugs can alter taste perception by affecting the taste buds or the brain's processing of taste signals.

Question 7

When you look at an image, it is inverted on the back of the retina and yet appears right-side-up when we perceive it. What part of the body is responsible for inverting the image?

Accepted Answer

The brain is responsible for processing the signals from the retina and interpreting them as a right-side-up image. The retina, rods and cones, optic nerve, and lens all play a role in transmitting the image to the brain, but none of them invert the image.

Question 8

Which of the following correctly matches a sensory receptor with its stimuli?

Accepted Answer

Thermoreceptors are sensory receptors that detect changes in temperature.

Question 9

The most frequent causes of blindness in adults are retinal disorders.

Accepted Answer

This statement is true. Retinal disorders, such as macular degeneration and diabetic retinopathy, are among the leading causes of blindness in adults.

Question 10

Taste and smell are examples of exteroceptors.

Accepted Answer

Taste and smell are both sensory receptors that respond to stimuli from the external environment, making them exteroceptors.

Question 11

What is the location of the sensory receptors associated with the sense of smell?

Accepted Answer

The sensory receptors associated with the sense of smell are located on the roof of the nasal cavity.

Question 12

Which type of receptor found in the skin is comprised of free nerve endings?

Accepted Answer

The type of receptor found in the skin that is comprised of free nerve endings is the temperature receptor. The other options listed are all types of specialized receptors found in the skin that detect various stimuli such as pressure, touch, and vibration.

Question 13

What part of your brain interprets the information received from the taste buds?

Accepted Answer

The gustatory cortex is responsible for interpreting information received from the taste buds.

Question 14

What are the three areas of the inner ear?

Accepted Answer

The three areas of the inner ear are the semicircular canals, vestibule, and cochlea. Choice B is incorrect because the organ of Corti is not one of the three areas of the inner ear. Choices C, D, and E are also incorrect because they do not include all three areas of the inner ear.

Question 15

The order in which light reaches the lens of a human eye is

Accepted Answer

The light first enters the cornea, then passes through the aqueous humor, then enters the pupil, and finally reaches the lens.

Question 16

Images arriving at the visual area of the brain have been split because the left optic tract carries information about the right portion of the visual field and the right optic tract carries information about the left portion of the visual field.

Accepted Answer

This is true because of the way light enters the eyes and how the optic nerves cross over in the brainstem. As a result, information from the right visual field is processed by the left hemisphere of the brain and vice versa.

Question 17

As people age, they tend to lose their sense of smell and their hearing.

Accepted Answer

It is true that as people age, they may experience a decline in their sense of smell and their hearing. This can be due to a variety of factors, such as changes in the body's chemistry or exposure to loud noises or pollutants over time.

Question 18

In nearsightedness, light rays are brought into focus

Accepted Answer

Nearsightedness, or myopia, occurs when the eyeball is too elongated or the cornea is too curved, causing light rays to focus in front of the retina instead of directly on it. This results in a blurred image of objects that are far away.

Question 19

There are separate nociceptors for mechanical damage and damage due to toxic substances.

Accepted Answer

There are no separate nociceptors for mechanical damage and damage due to toxic substances. Nociceptors respond to a variety of harmful stimuli, including mechanical damage, temperature extremes, and exposure to chemicals.

Question 20

Which of the following would be detected by a cutaneous receptor?

Accepted Answer

Cutaneous receptors are present in the skin and are responsible for detecting various sensations including touch, pressure, pain, and temperature. Therefore, temperature would be detected by a cutaneous receptor. Equilibrium, sound waves, motion, and gravity are all detected by other specialized receptors in the body such as vestibular receptors for equilibrium, hair cells in the ear for sound waves, proprioceptors for motion, and otolith organs for gravity.

Quiz 18: Senses