Homeostasis - answer maintenance of relatively constant conditions within the body's
internal environment
Steady State - answer occurs when regulated variables, such as BP, pH, glucose
concentration, and body temp., fluctuate about a set point or within a set range
Set Point & Set Range - answer_______ and ______ for a variable can be changed by
the body as environmental conditions change. For example, the S.R. for a resting heart
rate is very different than the heart rate S.R during exercise
Negative Feedback - answerA type of feedback commonly employed in homeostatic
regulatory systems in which the response of a system goes in a direction opposite to the
change that set it in motion
Positive Feedback - answerA type of feedback in which the response of a system goes
in the same direction as the change that set it in motion (ex. childbirth)
Sensors - answerA negative feedback mechanism; often neurons or receptors that
monitor the variable
Set Point - answerthe normal or desired value of the regulated variable in a homeostatic
regulatory system
Effectors - answercells, tissues, or organs that respond to neural or chemical signals; in
homeostatic regulatory systems, cells, tissues, or organs that respond to output signals
of the integrating center and bring about the final response; also called effector organs
Antagonistic Effectors - answereffectors that compliment other effectors actions to
maintain homeostasis; Body Temp. Ex: some of the effectors will act to increase the
core body temp. while other will act to decrease the core body temp.
Feed-Forward Mechanisms - answerAids in maintenance of homeostasis; allow the
body to anticipate change in a variable and to prepare for that change so that it is as
small as possible
Amplification Cascade - answerType of positive feedback where each step is larger
than the previous step; the purpose of this process is to cause a change in the body
Independent Variable - answer
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Dreamer252. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.99. You're not tied to anything after your purchase.