Physiology of Pain (incomplete)

How is pain detected in animals other than humans as they cannot talk?

Determined by behavior

What is the ascending pathway for pain?

Lateral spinothalamic tract

What are some things that pain can produce in animals?

All of these

What is a situation in which an animal might benefit from ignoring pain?

When a prey animal is wounded but still actively escaping from a predator

How can pain be defined?

an unpleasant sensory and emotional experience that signals ongoing or imminent tissue injury

What are the components of pain?

Sensory and emotional

Pain can be actual or potential

True

What is nociception?

The activity by a noxious stimulus that causes pain

What are common causes of pain?

All of these

Which of the following matches the site description of pain classification?

Somatic, visceral, or neuropathic

Which of the following matches the origin description of pain classification?

Superficial, deep, or visceral

Which of the following matches the duration description of pain classification?

Acute or chronic

How is visceral pain usually described?

More diffuse (poorly localized) and unpleasant

How is somatic pain usually described?

More centralized and easily located

Why is visceral pain more diffuse?

Low density of visceral sensory innervation and extensive divergence of the visceral input within the CNS

How does neuropathic pain arise?

Disorder of processing of nociceptive activity OR abnormal activity in nociceptive pathways

What is hyperalgesia?

Disproportionate hypersensitivity to stimuli

What is hyperpathia?

Abnormal pins and needles sensations

What is allodynia?

Nociceptive responses to harmless stimuli

How is visceral pain defined?

Pain sensation originating from the abdominal or thoracic organs

What are some common causes of visceral pain?

All of these

What does neuropathic pain affect?

Peripheral nerves or spinal cord

Neuropathic pain is easy to treat appropriately.

False

Which pain is generally classified as the easiest to treat?

Acute somatic pain

Which of the following matches acute pain?

Sharp pain, short duration, easily identified causes, localized

Which of the following matches chronic pain?

Intermittent/constant pain, differing intensities, longer period, difficult to treat

Slide 16?