1. The Skin’s Role in the
Homeostasis of Body
Temperature
Development Course
Dr. Helen Mergenthal

2. HOMEOSTASIS
• Internal conditions
are not absolute
• Limited range
• Vary around a set point

3. Negative feedback is when the
body senses a change and tries
to reverse it back to stability.

4. Feedback Loops consists of:
• Homeostatic range for a
variable
• Receptors
• Control center
• Effector

5. • Homeostatic range:
37 degrees Centigrade or 98.6 degrees Fahrenheit
(plus or minus 0.5 degrees)
•
The body’s thermostat is a part of the brain called
the Hypothalamus.
•
Above 37.5 degrees Centigrade,
homeostasis is disturbed.

6. OpenStax College. (2013, June 19). Anatomy & Physiology.
Retrieved from the Connexions Web site:
http://cnx.org/content/col11496/1.6/

7. If the body temperature goes below
36.5 degrees Centigrade (97.7
degrees Fahrenheit)
• Blood vessels in skin constrict
• Sweat glands stay inactive
• Shivering, involuntary muscle
contractions, releases heat