Question 1

A sensation is ______, and projection of a sensation is the ______.

Accepted Answer

A sensation is a feeling that results from sensory stimulation, and projection of a sensation is when the brain causes it to seem like it is coming from the receptors being stimulated. This is why we can sometimes feel sensations in areas of our body that are not actually being stimulated.

Question 2

Max returns to his dorm room late at night to find his roommate throwing up. The smell is at first so bad that Max wants to vomit too, but after helping his roommate clean up, the odor seems to fade. Max has experienced

Accepted Answer

Max has experienced sensory adaptation, which is a phenomenon where sensory receptors become less sensitive to constant or repetitive stimuli. In this case, Max became accustomed to the odor after being exposed to it for a period of time, resulting in a decrease in its perceived intensity.

Question 3

Which of the following are paired correctly?

Accepted Answer

All of the options are correctly paired as they describe the type of receptors and the stimuli that activate them. Baroreceptors are stimulated by changes in blood pressure, pain receptors are activated by tissue damage, and thermoreceptors respond to temperature changes.

Question 4

A pole vaulter keeps track of his position in mid-air through

Accepted Answer

Proprioceptors are sensory receptors that detect motion and position of the body. They are responsible for providing the pole vaulter with information on their body position and movements while in mid-air. Lamellated corpuscles, pain receptors, and baroreceptors are not directly involved in detecting body position and movements.

Question 5

Sensory receptors include

Accepted Answer

Sensory receptors include mechanoreceptors (respond to mechanical stimuli such as pressure or touch), chemoreceptors (respond to chemical stimuli such as taste or smell), and photoreceptors (respond to light). Therefore, all of the choices are correct.

Question 6

Olfactory receptors, which provide the sense of smell, are

Accepted Answer

Olfactory receptors are chemoreceptors that are responsible for detecting different odors in the air. They are located in the nasal cavity and are responsible for the sense of smell.

Question 7

Temperature senses use two types of

Accepted Answer

Temperature senses use free nerve endings, which are the most common type of sensory receptors. They detect changes in temperature and transmit signals to the brain, which interprets the sensations as hot or cold. Chemoreceptors detect chemicals, proprioceptors detect body position and movement, and tactile corpuscles detect touch and pressure.

Question 8

Receptors for the special senses are found

Accepted Answer

Receptors for special senses such as vision, hearing, taste, smell, and equilibrium are primarily located in the head, including the eyes, ears, nose, tongue, and inner ear.

Question 9

The war veteran experiences an intense burning sensation seeming to come from where his foot had been amputated. He most likely has

Accepted Answer

The symptoms described are characteristic of reflex sympathetic dystrophy (RSD), also known as complex regional pain syndrome. This condition can occur after trauma or injury and is characterized by intense pain, swelling, and burning sensations in the affected area. It can be very debilitating and difficult to treat. Hereditary sensory and autonomic neuropathy would not be likely in a war veteran who had not previously experienced sensory or autonomic dysfunction. Post traumatic stress disorder and anosmia do not typically cause burning sensations.

Question 10

Sensory impulses are stimulated at receptors by

Accepted Answer

Sensory impulses are stimulated when there are local changes in the cell membrane potentials of receptors. This change in potential triggers the release of neurotransmitters which carry the stimulus to the next neuron in the pathway. Options A and B refer to processes that occur after the receptor has been stimulated, while subthreshold potential (option C) refers to a potential that is not strong enough to trigger an action potential.

Question 11

Fibers of the spinothalamic tract transmit pain and temperature information to the

Accepted Answer

Fibers of the spinothalamic tract transmit pain and temperature information to the thalamus, which then relays the information to the appropriate areas of the cerebral cortex for processing and perception.

Question 12

Pain receptors differ from other somatic receptors by

Accepted Answer

Pain receptors, also known as nociceptors, adapt very little, if at all, compared to other somatic receptors. This is because they need to continuously signal the presence of tissue damage or injury.

Question 13

Pain impulses are first processed in the

Accepted Answer

Pain impulses are first processed in the gray matter of the posterior horn of the spinal cord, which is responsible for receiving sensory information from various parts of the body. From there, the impulses are transmitted to higher brain centers, including the cerebral cortex, which is responsible for conscious perception of pain.

Question 14

The sequence of information flow in response to biting into a slice of pizza is

Accepted Answer

The correct sequence is: sensory receptors are activated first, then an impulse is sent to the CNS, followed by sensation, and finally perception.

Question 15

Pain receptors

Accepted Answer

Pain receptors, also known as nociceptors, respond to factors that can potentially damage tissue, such as heat, pressure, or chemicals. They do not adapt rapidly like some other types of receptors and are widely distributed throughout the body. While they do transmit signals to the brain, they are not among the most specialized receptors found in the brain.

Question 16

The ability to ignore your socks around your ankles demonstrates

Accepted Answer

Sensory adaptation refers to our ability to perceive and respond to sensory information in our environment. In this case, our ability to ignore the sensation of socks around our ankles is an example of sensory adaptation. We have become habituated to this sensation and no longer perceive it as novel or important, allowing us to focus on other stimuli in our environment.

Question 17

Receptors for the general senses are found

Accepted Answer

Receptors for the general senses are widely distributed throughout the body, including in the skin, muscles, bones, joints, and internal organs.

Question 18

The brain interprets input from sensory receptors as

Accepted Answer

The answer of The brain interprets input from sensory receptors...

Question 19

Another name for pain receptors is

Accepted Answer

Pain receptors are also known as nociceptors. They are specialized nerve endings that detect painful stimuli such as heat, pressure, and chemicals. Tactile corpuscles and lamellated corpuscles are types of mechanoreceptors that are involved in detecting touch and pressure, respectively.

Question 20

Henry has hereditary sensory and autonomic neuropathy. He lacks

Accepted Answer

Hereditary sensory and autonomic neuropathy causes a lack of nociceptors, which are responsible for detecting pain and temperature sensation. The other types of receptors (chemoreceptors, mechanoreceptors, and baroreceptors) are not specifically affected by this condition.

Quiz 12: Nervous System III: Senses

A sensation is , and projection of a sensation is the .