72 Questions
Which division of somatosensation includes the sense of one's own body position?
Proprioceptive division
What is the function of SS neurons?
Transduction and transmission
What is the term for the encoding of stimuli into electrical signals?
Transduction
What happens to the receptor potential and neural response when there is a constant stimulus?
They decrease
Which type of receptor generates action potentials throughout the stimulus but diminishes slowly?
Tonic receptors
Which receptor type is important for sensing harmful pain?
Nociceptors
Which receptor type detects direct pressure on the skin and high-frequency vibration?
Pacinian corpuscles
Which receptor type is responsible for detecting sustained touch and is found in blind individuals?
Merkel cells
Which test is used to assess proprioception?
Romberg test
Where are proprioceptive mechanoreceptors located?
Muscles, joints, and skin
What happens to the Ib afferent axon when a Golgi tendon organ is stretched?
It is compressed by collagen fibers and its rate of firing increases
Which type of nociceptor responds to intense pressure on the skin?
Mechanical nociceptor
Which division of somatosensation includes the sense of one's own body position?
Proprioceptive division
Which receptor type is responsible for detecting changes in sensory stimuli?
Phasic receptors
What happens to the receptor potential and neural response when there is a constant stimulus?
They decrease in amplitude
Which receptor type is responsible for detecting intense pressure on the skin?
Nociceptors
Which receptor type is responsible for detecting changes in light touch, stroke, and flutter?
Meissner corpuscle
Which receptor type is responsible for detecting fast vibrations?
Pacinian corpuscle
Which receptor type is responsible for detecting skin stretch and sustained pressure?
Ruffini ending
Which receptor type is responsible for detecting sustained touch on edges and points?
Merkel receptor
Which test is used to assess proprioception?
Rhomberg test
Which type of receptor is responsible for detecting extreme temperatures, such as hot or very chilly stimuli?
Thermal nociceptors
What is the function of α motor efferent neurons?
They generate action potentials for muscle contraction
Which type of nociceptor responds to both hot and cold stimuli?
Polymodal nociceptors
Which division of somatosensation includes the sense of one's own body position?
Proprioceptive division
Which receptor type is responsible for detecting changes in light touch, stroke, and flutter?
Mechanoreceptors
What happens to the receptor potential and neural response when there is a constant stimulus?
They decrease in amplitude
Which receptor type is responsible for detecting extreme temperatures, such as hot or very chilly stimuli?
Thermoreceptors
Which type of receptor is responsible for detecting changes in temperature and has differential sensitivity to different temperature ranges?
Thermoreceptors
Which test is used to assess proprioception?
Romberg test
Which receptor type is responsible for detecting changes in light touch, stroke, and flutter?
Meissner corpuscle
Which receptor type detects direct pressure on the skin and high-frequency vibration?
Pacinian corpuscle
Which type of nociceptor responds to intense pressure on the skin?
Mechanical nociceptors
Where are proprioceptive mechanoreceptors located?
Muscles, joints, and skin
Which receptor type is responsible for detecting skin stretch and sustained pressure?
Ruffini ending
Which receptor type is responsible for detecting sustained touch on edges and points?
Merkel cell
Which division of somatosensation includes the sense of one's own body position?
Proprioceptive division
Which receptor type is responsible for detecting changes in light touch, stroke, and flutter?
Mechanoreceptors
What happens to the receptor potential and neural response when there is a constant stimulus?
They decrease in amplitude
Which receptor type is responsible for detecting skin stretch and sustained pressure?
Mechanoreceptors
Which receptor type is responsible for detecting sustained touch on edges and points?
Merkel cells
What type of receptor generates action potentials throughout the stimulus but diminishes slowly?
Tonic receptors
Which receptor type detects fast vibrations?
Pacinian corpuscles
Which receptor type is responsible for detecting skin stretch and sustained pressure?
Ruffini endings
Which test is used to assess proprioception?
Romberg test
Which type of receptor is responsible for detecting changes in temperature and has differential sensitivity to different temperature ranges?
Thermoreceptors
Where are proprioceptive mechanoreceptors located?
Muscles, joints, and skin
Which type of nociceptor responds to intense pressure on the skin?
Mechanical nociceptors
Which division of somatosensation includes the sense of one's own body position?
Proprioceptive division
Which receptor type is responsible for detecting changes in temperature and has differential sensitivity to different temperature ranges?
Thermoreceptors
What is the function of SS neurons?
To transmit sensory information to the CNS
What happens to the receptor potential and neural response when there is a constant stimulus?
They decrease in amplitude
Which receptor type is responsible for detecting changes in light touch, stroke, and flutter?
Meissner corpuscle
Which receptor type detects direct pressure on the skin and high-frequency vibration?
Pacinian corpuscle
Which division of somatosensation includes the sense of one's own body position?
Proprioception
Which type of nociceptor responds to intense pressure on the skin?
Mechanoreceptor
Which test is used to assess proprioception?
Romberg test
Which type of receptor is responsible for detecting changes in temperature and has differential sensitivity to different temperature ranges?
Thermoreceptors
What happens to the receptor potential and neural response when there is a constant stimulus?
The receptor potential and neural response decrease
Which type of nociceptor responds to both hot and cold stimuli?
Polymodal nociceptors
Which division of somatosensation includes the sense of one's own body position?
Proprioceptive division
What is the term for the encoding of stimuli into electrical signals?
Transduction
What happens to the receptor potential and neural response when there is a constant stimulus?
They decrease in amplitude
Which receptor type is responsible for detecting changes in temperature and has differential sensitivity to different temperature ranges?
Thermoreceptors
Which receptor type is responsible for detecting sustained touch and is found in blind individuals?
Merkel cells
Which receptor type is responsible for detecting changes in light touch, stroke, and flutter?
Meissner corpuscles
Which receptor type is responsible for detecting fast vibrations?
Pacinian corpuscles
Which receptor type is responsible for detecting skin stretch and sustained pressure?
Ruffini endings
Which test is used to assess proprioception?
Romberg test
Which receptor type is responsible for detecting skin stretch and sustained pressure?
Muscle spindle
What is the function of α motor efferent neurons?
Control muscle contraction
Which type of nociceptor responds to extreme temperatures and acidic substances?
Thermal nociceptor
Study Notes
Somatosensation
- The division of somatosensation that includes the sense of one's own body position is proprioception.
Receptor Functions
- SS neurons have the function of encoding stimuli into electrical signals, which is known as transduction.
- The term for the encoding of stimuli into electrical signals is transduction.
Receptor Potentials and Neural Response
- When there is a constant stimulus, the receptor potential and neural response adapt or diminish slowly.
Receptor Types
- There are different types of receptors that respond to different stimuli:
- Meissner's corpuscles detect direct pressure on the skin and high-frequency vibration.
- Merkel's discs are responsible for detecting sustained touch and are found in blind individuals.
- Ruffini's corpuscles detect skin stretch and sustained pressure.
- Pacinian corpuscles detect fast vibrations.
- Meissner's corpuscles detect changes in light touch, stroke, and flutter.
- Krause's end bulbs detect changes in temperature and have differential sensitivity to different temperature ranges.
- Nociceptors respond to intense pressure on the skin, extreme temperatures, and acidic substances.
Proprioception
- Proprioceptive mechanoreceptors are located in muscles, tendons, and joints.
- The Romberg test is used to assess proprioception.
Motor Neurons
- α motor efferent neurons have the function of transmitting signals from the central nervous system to muscles and glands.
Test your knowledge on peripheral somatosensory mechanisms and modalities in this quiz. Explore the different sensations perceived after stimuli and learn about the neural activity originating from receptor stimulation in the body. Discover the various somatosensation modalities such as movement, touch, temperature, and pain.
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