Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
18 Cards in this Set
- Front
- Back
|
Nociceptors |
Detect pain from peripheral nervous system and transmits it to the central nervous system. |
|
|
Where are nociceptors located? |
skin, joints, connective tissue, muscle; thoracic, abdominal and and pelvic viscera.
|
|
|
Afferent Fibers |
Transmit pain sensation to the CNS |
|
|
What are the two Afferent fibers? |
Adelta (Ad) and C Fibers |
|
|
A-delta fibers |
myelinated, larger, transmits quickly - sharp, short pain. |
|
|
C - Fibers |
Unmyelinated, transmits slower, dull, ache kind of pain. |
|
|
Phases of nociceptive pain |
transduction, transmission, perception, modulation |
|
|
Transduction |
a stimulus in the form of an injury stimulates the cells to release chemicals (acting as neurotransmitters) that initiate pain signals to be sent to the CNS in the spinal cord. |
|
|
Transmission |
Pain stimulus sent to the spinal cord via transduction is now sent through the spinal cord to the brain. |
|
|
Perception |
The conscious awareness of pain when it reaches the brain. |
|
|
Modulation |
The inhibition of painful sensations by the body. |
|
|
Neuropathic Pain |
Abnormal processing of pain, causing chronic pain. |
|
|
Somatic Pain |
Pain felt in musculoskeletal tissues, or body surface |
|
|
Deep Somatic Pain |
Pain felt in joints, bones, muscles, blood vessels |
|
|
Cutaneous Pain |
Pain derived from skin and subcutaneous tissues. |
|
|
Referred Pain |
Pain that is felt in some part of the body, but originates someplace else. Ex: cardiac pain -> left arm or neck. Shares nerves with these places, and brain has a hard time distinguishing the origin |
|
|
Acute Pain |
Self limiting, short term pain -- After surgery, an injury, kidney stones. |
|
|
Chronic Pain |
Lasts six months or longer, sometimes years. Arthritis, fibromyalgia. |
