Texas Class A Barber Written ExamAnatomy and PhysiologyEasy
A client presents with a localized skin infection characterized by redness, swelling, heat, and pain around a hair follicle. As a barber, recognizing these cardinal signs of inflammation, you understand they are primarily mediated by the body's:
- Acirculatory system's immune response.
- Blymphatic system's fluid drainage.
- Cintegumentary system's barrier function.
- Dnervous system's pain receptors.
Show answer & explanationAnswer & explanation
Correct answer: A. circulatory system's immune response.
The cardinal signs of inflammation (redness, swelling, heat, pain) are direct results of the circulatory system's response to injury or infection. Blood vessels dilate, increasing blood flow (redness, heat), and fluid/immune cells leak into the tissue (swelling, pain).
Why the other options are wrong
- B. The lymphatic system helps drain fluid, but it's not the primary mediator of the initial inflammatory signs.
- C. The integumentary system provides a barrier, but inflammation is a response to a breach or infection, not the barrier itself.
- D. While pain is sensed by the nervous system, the inflammatory response itself is not primarily mediated by it.
Cardinal Signs of Inflammation
The four classic signs of inflammation are redness (rubor), swelling (tumor), heat (calor), and pain (dolor), primarily caused by the circulatory system's response to injury or infection.
- Redness and heat: increased blood flow.
- Swelling: fluid leakage from capillaries.
- Pain: pressure from swelling and chemical mediators.
Memory trick: Circulation's cascade causes classic signs of cellular combat.