Biology 2601A/B Lecture : organismal phys

45 views3 pages

Document Summary

Physiological plasticity is the ability to change shape. Ectotherms, such as fish, can conform and regulate at the same time. They can maintain a constant blood cl concentration at different h2o cl concentrations. But their blood temperature changes with water temperature. Homeostasis is maintaining balance in the body. It is internal constancy and the physiological regulatory systems that automatically make adjustments to maintain it. It is the condition of a relatively stable internal physiological environment, usually involving extensive feedback mechanisms (in the face of external fluctuations). Homeostasis works by using a feedback loop. regulationbody temperaturesensorregulation the sensor compares the body temperature value to a set point and sends this information to the regulator, which can then adjust the body temperature. decrease heat loss (vasoconstrict), increase heat production body heats toward set point. Positive feedback: progressively takes value away from set point. It is rare in biology and results in an amplification of the deviation from the set point.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents

Related Questions