Question 1

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, joints, and internal organs. They enable us to detect touch, pressure, temperature, and pain sensations. Therefore, the best choice is C, as it reflects the widespread distribution of these receptors. Choices A, B, and D are not correct, as they do not accurately reflect the distribution of general sense receptors.

Question 2

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

Accepted Answer

The spinothalamic tract is a pathway that transmits pain and temperature information from the spinal cord to the brain. Specifically, it sends this information to the thalamus, which is a relay station for sensory inputs to the cortex. Therefore, choice D is the best answer.

Question 3

Another name for pain receptors is

Accepted Answer

Pain receptors are known as nociceptors. Nociceptors are specialized sensory receptors that are capable of sensing tissue damage or potential harm to the body, which triggers the sensation of pain. Tactile corpuscles and lamellated corpuscles are both types of mechanoreceptors, which are responsible for sensing touch, pressure, and vibration.

Question 4

Your friend slaps you on the arm. Immediately, you feel a sharp, stinging pain that stops promptly after the slap is over. ________ are responsible for this sensation. For about a minute afterward, you feel a dull, lingering sting. ________ are responsible for this sensation.

Accepted Answer

A-delta fibers are responsible for sharp, fast pain sensations like the initial stinging pain from the slap. C fibers are responsible for slower, duller pain sensations that last longer, like the lingering sting after the slap. Therefore, choice D is the correct answer.

Question 5

The brain interprets input from sensory receptors as

Accepted Answer

Perception is the process by which the brain interprets sensory input, making sense of the information received from sensory receptors.

Question 6

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

Accepted Answer

The correct sequence starts with sensory receptors being activated by the heat, texture, or taste of the pizza. These receptors then send impulses to the central nervous system (CNS), where the brain interprets these signals as sensations (e.g., hot, cheesy, savory). Finally, perception occurs, which is the brain's interpretation and conscious experience of those sensations.

Question 7

Receptors for the special senses are found

Accepted Answer

Receptors for the special senses, such as sight, smell, taste, hearing, and balance, are primarily found in the head. This includes the eyes, ears, nose, and mouth.

Question 8

The ability to ignore your socks around your ankles demonstrates

Accepted Answer

Sensory adaptation refers to the ability of the sensory system to adjust to a constant, unchanging stimulus, such as the feeling of socks around your ankles. In this case, the ability to ignore the sensation of socks around your ankles suggests sensory adaptation. General adaptation, receptor integration, and interpretive assimilation are not relevant to this situation.

Question 9

How do pain receptors differ from other somatic receptors?

Accepted Answer

Pain receptors are different from other somatic receptors in that they adapt very little, if at all. Somatic receptors responsible for touch, pressure and temperature adaptation much more easily than pain receptors.

Question 10

Which of the following are paired correctly?

Accepted Answer

Proprioceptors are specialized receptors that detect changes in tension and position in muscles and tendons. Baroreceptors are stimulated by changes in blood pressure, not damage to tissues. Nociceptors are specialized receptors that detect pain, not changes in blood pressure. Thermoreceptors are stimulated by changes in temperature, not energy from light.

Question 11

Sensory receptors include

Accepted Answer

Baroreceptors are specialized sensory receptors that detect changes in blood pressure and provide input to regulate it. Motor neurons, interneurons, and Schwann cells are all involved in the transmission and processing of nerve signals but are not sensory receptors.

Question 12

Which example fits? "A sensation is ________ , and projection of a sensation is ________."

Accepted Answer

A sensation refers to the activation of sensory receptors, such as nociceptors in this case, while projection refers to the brain's interpretation and localization of that sensation to a specific body part or location. So, the activation of the nociceptors in the finger is the sensation, and the brain recognizing that the pain is coming from the finger is the projection.

Question 13

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 occurs when a person's sensory receptors become less responsive to constant or unchanging stimuli. The odor was initially very strong, but as Max helped his roommate clean up, the odor gradually became less intense until it eventually faded away completely. This is an example of sensory adaptation, as Max's olfactory receptors became less responsive to the odorant molecules in the air.

Question 14

Pain impulses are first processed in the

Accepted Answer

Pain impulses are first processed in the gray matter of the posterior horn, which is located in the spinal cord.

Question 15

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

Accepted Answer

Proprioceptors are specialized sensory receptors found in muscles, tendons, and joints that provide information about body position and movement. They would be the most appropriate for a pole vaulter to use to keep track of their position mid-air, as they would sense the position of the body and limbs relative to each other and provide feedback on how to adjust movements accordingly. Lamellated corpuscles are pressure receptors found in the skin, and pain receptors are not relevant for this task. Baroreceptors are sensors in blood vessels that detect changes in blood pressure and would not be relevant for a pole vaulter.

Question 16

Choose the statement that correctly pairs sensation, perception, and/or projection with the example.

Accepted Answer

Sensation involves the initial detection of stimuli by sensory receptors, such as cone cells in the eye detecting specific wavelengths of light. Perception refers to the brain's interpretation of these sensory signals, leading to the recognition of objects, such as identifying the color as red lipstick.

Question 17

Temperature senses use two types of

Accepted Answer

Temperature senses use free nerve endings, which are receptors that respond to changes in temperature. These receptors are located in the skin and deep tissues, and they transmit signals to the brain to help regulate body temperature and detect temperature changes in the environment.

Question 18

Sensory impulses originate at receptors in response to

Accepted Answer

Sensory impulses originate from receptors due to local changes in their cell membrane potentials. When a stimulus alters the membrane potential of a receptor cell, it generates a localized change in potential that can initiate an action potential to travel to the central nervous system. The other options (A, B, and C) do not accurately describe the process of sensory impulse generation.

Question 19

Choose the statement that does NOT correctly describe the function of the corresponding sensory receptor.

Accepted Answer

Proprioceptors are sensory receptors that detect the position and movement of your body, not the color of objects. The statement incorrectly describes the function of proprioceptors in the eyes.

Question 20

Olfactory receptors, which provide the sense of smell, are

Accepted Answer

Olfactory receptors are specialized chemoreceptors that detect and respond to different odor molecules in the air.

Quiz 12: Nervous System III: Senses