Metabolism Exam 1 Flashcards
Physiology
When homeostasis is maintained (normal)
Pathophysiology
Homeostasis is not maintained
Morphology
The science of body structure and how they relate to each other (more like anatomy)
Homeostatic control mechanisms are used to ______ ______ of the internal environment and _____ _________ as needed
monitor aspects
make corrections
Do variations in homeostasis have limits?
yes
What is the homeostatic components pathway
Stimulus: change in environment (eat)
Receptor: detection unit (detect)
Control Center: receives input, sorts it, sends message
Effector: body part that responds to stimulus (organs)
Response: change body conditions (normal range)
Negative feedback system
brings about a response that moves a variable OPPOSITE to the direction of its original change
Positive feedback system
enhances the production of the product or accelerates a process
What is most homeostatic regulation done by
negative feedback loops
Example of negative feedback loop with blood pressure
blood pressure is high, activates system to lower blood pressure (high to low)
What feedback loop prevents sudden changes in body and reduces the actions of the effectors
negative
What feedback loop corrects the set point and causes the opposite of bodily disruption to occur
negative
Examples of positive feedback loops
cervix dilation during delivery
blood clot formation
What feedback loop increases the actions of the body and produces more instability
positive
What feedback loop only has a few types and are short-lived mechanisms
positive
