Pain and Temperature Physiology

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What is the term for the perception of a non-noxious stimulus as pain?

Analgesia

Hypoalgesia

Allodynia (correct)

Anesthesia

What is the term for a decrease in sensitivity to painful stimuli?

Hypoalgesia (correct)

Allodynia

Hyperalgesia

Analgesia

What is the term for the absence of pain without loss of sensation?

Analgesia (correct)

Anesthesia

Allodynia

Paresthesia

What is the term for a complete lack of physical sensation?

Anesthesia Signup and view all the answers

What is the term for abnormal sensations without apparent stimuli?

Paresthesia Signup and view all the answers

What is the term for pain that occurs along the distribution of a nerve or group of nerves?

Neuralgia Signup and view all the answers

What is the point at which a stimulus is first perceived as pain?

Pain threshold Signup and view all the answers

What is the duration of time or intensity of pain that an individual will endure before initiating overt pain responses?

Pain tolerance Signup and view all the answers

Which type of pain is characterized by a sharp, pricking, or electric pain sensation?

Fast pain Signup and view all the answers

Which type of pain is associated with tissue destruction?

Slow pain Signup and view all the answers

What is the main pathway for fast pain transmission?

Neospinothalamic pathway Signup and view all the answers

What is the characteristic of the pain felt in fast pain?

Felt on skin Signup and view all the answers

Which type of pain fibers transmit mainly mechanical and acute thermal pain?

Type Aδ pain fibers Signup and view all the answers

What is the characteristic of the slow pain transmission pathway?

A much older system that transmits pain mainly from peripheral slow-chronic type C pain fibers Signup and view all the answers

Which pathway do the second-order neurons of the neospinothalamic tract give rise to?

Long fibers that cross immediately to the opposite side of the cord Signup and view all the answers

What is the time frame for the onset of slow pain?

1 second or more, slowly increasing over many seconds and minutes Signup and view all the answers

What is the severity of Jona's headache?

8/10 Signup and view all the answers

Where is Jona's headache located?

Left temporal Signup and view all the answers

What is the character of Jona's headache?

Pulsating Signup and view all the answers

What symptom does Jona experience prior to her headache?

Light sensitivity Signup and view all the answers

What exacerbates Jona's headache?

Loud noises Signup and view all the answers

What is the time course of Jona's headache?

Persistent Signup and view all the answers

What type of pain is referred to the surface of the head?

Referred pain Signup and view all the answers

What structures are pain-sensitive in the cranial vault?

Dura at the base of the brain and venous sinuses Signup and view all the answers

What is the primary function of the neospinothalamic pathway?

Transmitting fast pain Signup and view all the answers

Which neurotransmitter is released by sensory fibers in response to pain stimuli?

Glutamate Signup and view all the answers

What percentage of pain fibers terminate directly at the thalamus?

Around 10-25% Signup and view all the answers

Where do the majority of pain fibers terminate?

Brainstem Signup and view all the answers

What is the primary function of the third-order neurons in pain perception?

Projecting pain signals to the cerebral cortex Signup and view all the answers

Where do the third-order neurons project pain signals to?

Somatosensory areas I and II Signup and view all the answers

What is the result of complete removal of the somatic sensory areas of the cerebral cortex?

No effect on pain perception Signup and view all the answers

What is the effect of electrical stimulation of cortical somatosensory areas?

Mild pain perception Signup and view all the answers

What is the term for perceiving a non-noxious stimulus as being painful?

Allodynia Signup and view all the answers

What is the term for an abnormal sensation with or without a stimulus?

Dysesthesia Signup and view all the answers

At what time frame does persistent pain become defined as chronic pain?

12 months Signup and view all the answers

Which is not a systemic response to acute pain?

Increased Peristalsis Signup and view all the answers