NUR 339 Exam 2

NUR 339 Exam 2
1. Homeostasis
level of constancy maintained by body during time of change
2. Control Systems
used to maintain homeostasis—the human body has thou- sands of intricate control systems
Examples
Temperature control, blood glucose control, BP control, fluid balance
3. Feedback mechanisms/loops
-Self-regulating mechanisms which control homeostasis
-3 components
Sensor mechanism - senses disruption in homeostasis
Control center - regulates response in the body, regulated in CNS Effector mechanism - acts to
restore homeostasis.
4. Negative vs positive feedback
-Negative reversesthe original change; positive increases the original change.
Negative ex.--> increased blood sugar, increased blood osmolarity (dehydration) Positive ex. --
> labor contractions. Uncommon feedback loop
5. Adaptation
Ability to respond and maintain stability during rapidly changing conditions in internal and
external environment.
Responses are efficient and effective.
Ex.CHF.Short term response --> Elevates BP, HR, retain fluid.Long term response
--> heart vessel enlarge

NUR 339 Exam,NUR 339 Test,NUR 339 Flashcard,NUR 339 quiz,NUR 339 Practice,NUR 339 Practice test,NUR 339 Practice flashcard,NUR 339 Practice exam,NUR 339 Study guide,NUR 339 Practice questions,NUR 339 Questions,NUR 339 Practice questions and answers,NUR 339 Questions and answers,NUR 339 pdf,NUR 339 quizlet,NUR 339 reddit,NUR 339 Answer sheet,NUR 339 Answer key,NUR 339 Pdf free,NUR 339 Exam help,NUR 339 Cheat sheet,NUR 339 quiz bank,NUR 339 Questions bank,NUR 339 Practice Guide,NUR 339 Guide,NUR 339 Testbank,NUR 339 Practice Answers,NUR 339 Answers,NUR 339 Exam prep,NUR 339 Prep,NUR 339 Pdf download,NUR 339 Flashcards,NUR 339 Real questions,NUR 339 Actual questions,NUR 339 Real Questions and answers,NUR 339 Actual Questions and answers,NUR 339 Exam review,NUR 339 Review,NUR 339 Exam questions,NUR 339 Exam questions and answers,NUR 339 Practice test pdf,NUR 339 Practice test quizlet,NUR 339 Practice test Reddit,NUR 339 Practice test quizlet multiple choice,NUR 339 Exam study guide,NUR 339 Practice test free,NUR 339 Test questions,NUR 339 Exam study guide,NUR 339 Practice exam free,NUR 339 Practice tests free,NUR 339 Exam practice test,NUR 339 Exam test questions,NUR 339 Exam questions and answers,NUR 339 Exam practice test