Introduction:
Nociceptors are the sensory neurons and are located in the deep structures of the body. The signals produced by these receptors in deep body tissues are biologically as well as clinically important.
Answer to Problem 1RAC
The correct answer is option (c) painful mechanical, chemical, or thermal stimuli.
Explanation of Solution
Explanation for the correct answer:
Option (c) painful mechanical, chemical, or thermal stimuli. Nociceptors are the neurons that sense the pain and respond to potentially damaging stimuli. These neurons respond to stimuli by transferring threat signals to the spinal cord and brain. So, the correct answer is option (c).
Explanation for incorrect answer:
Option (a) changes in temperature at the site of the receptor. Nociceptors respond to the extreme alterations in temperature that induce pain. So, this is an incorrect option.
Option (b) compression, bending, or stretching of cells. The compression, stretching of cells, or bending can stimulate the nociceptors. However, the stretching or bending outside a normal range only can cause pain. So, this is an incorrect option.
Option (d) light striking a receptor cell. The light striking a particular receptor cell must be strong enough to induce pain in order to trigger a nociceptor reaction. So, this is an incorrect option.
Nociceptors mainly respond to damaging stimuli such as painful mechanical, thermal, or
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Chapter 14 Solutions
ANAT.+PHYSIO.2-LAB.MAN. >CUSTOM<
- A device that monitors the activity of the photoreceptor cells of the eye indicates that there is a constant flow of neurotransmitter being released by the photoreceptor cells. This information implies that the subject is a. reading. b. in a dark room. c. outside in sunlight. d. in a brightly lit auditorium. e. focusing on a distant object.arrow_forwardNerve impulses generated by nociceptors are interpreted bythe brain asa. fine touch.b. heat.c. pain.d. pressure.arrow_forwardWhich category of touch receptor would likely provide the least amount of useful information in very-old/senior age? (hint: think about cortical plasticity) a. Pacinian Corpuscles b. Meissner Cells c. Merkel Cells d. Ruffini Endingsarrow_forward
- Which statement about a center-surround receptive field is false? Select one: a. It can involve an inhibitory response (e.g., to touch) b. It is characterized by a circular center and a doughnut-shaped surround c. It is found only in primary sensory cortex d. It can be mapped by electrophysiological recording techniques e. It can involve an excitatory response (e.g., to touch)arrow_forwardWhere are the neurons located in the cortex that receive mechanosensory input from your left hand? a. In Broadman’s area 3a on both sides. b. The hand is not represented by neurons in the cortex. c. In the left primary somatosensory cortex (S1). d. None of the answers. e. In the right primary somatosensory cortex (S1).arrow_forwardMechanoreceptors involved in maintaining muscle tone andbody posture are calleda. cutaneous receptors.b. pain receptors.c. proprioceptors.d. statocysts.arrow_forward
- Decreased sensitivity to a continued stimulus is calleda. adaptation. d. conduction.b. projection. e. phantom pain.c. translation.arrow_forwardThe organization of input to the primary somatosensory cortex is and , a. columnar; made up of input from one type of receptor; found only in area 3b b. distributed; made up of input from multiple receptor types; found throughout primary sensory cortex c. columnar; made up of input from one type of receptor; found throughout primary sensory cortex d. distributed; made up of input from multiple receptor types; found only in area 1 e. columnar; made up of input from one type of receptor; found only in area 1arrow_forwardStimulation of membrane protein receptors by binding to specific molecules is not responsible fora.the sense of smell.b.sweet taste sensations.c.sour taste sensations.d.bitter taste sensations.arrow_forward
- Which category of touch receptors would likely provide the least amount of useful information in very old/senior age? (hint: think about cortical plasticity) a. Pacinian Corpuscles b. Meissner Cells c. Merkel Cells d. Ruffini Endingsarrow_forwardSelect the statement that explains the neural mechanism underlying the sensation of fast, sharp pain followed by delayed, longer-lasting pain after an injury. a. Fast pain is conducted by mechanoreceptors, whereas delayed pain is conducted by fibers with free nerve endings. b. Fast pain is conducted by free nerve endings in the dermis, whereas delayed pain is conducted by deep nerve endings in the subcutaneous layer. c. The receptive fields differ for the two types of pain sensation such that fast pain fibers have smaller receptive fields than the delayed pain fibers. d. Fast and delayed pain represent the progression of the injury; both are conducted by the same fibers. e. Fast, sharp pain is conducted by myelinated axons, whereas delayed, longer-lasting pain is carried by unmyelinated axons.arrow_forwardFill out the information indicated for tactile receptors in the table below: Name Structure Location Function. (encapsulated or unencapsulated?) Tactile disc Tactile corpuscle Free nerve endings End bulb Bulbous corpuscle Root hair plexus Lamellated corpusclearrow_forward
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning