PSYB64H3 Lecture Notes - Lecture 6: Antihypertensive Drug, Diabetes Insipidus, Angiotensin
Document Summary
Homeostasis is the physiological equilibrium of the body. Set point for the body is 37 degrees. Brainstem holds next sensitive; has a bigger range for set temperature. Spinal cord is least sensitive; large range of temperatures before putting in place the mechanisms to cause change. Smaller animals have a larger surface body- ratio; more difficult for them to maintain the core temperature, requires more effort. Heat stroke; elderly or younger children; the core temperature increases due to a failure to compensate. Hypothermia; can be beneficial to people who are having cardiac arrest; decreases swelling in the brain & helps the heart slow & not need as much oxygen. Blood vessels constrict & lose heat; people with raynon"s disease have it to the extreme; white waxy like appearance of skin; fingers and toes go into spasms because of the lack of blood flow.
