100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
NUR 339 ( LATEST 2024 / 2025 ) EXAM 2 | COMPLETE ANSWERS 100% CORRECT $17.99   Add to cart

Exam (elaborations)

NUR 339 ( LATEST 2024 / 2025 ) EXAM 2 | COMPLETE ANSWERS 100% CORRECT

 0 view  0 purchase
  • Course
  • NUR 339 Ex
  • Institution
  • NUR 339 Ex

NUR 339 ( LATEST 2024 / 2025 ) EXAM 2 | COMPLETE ANSWERS 100% CORRECT

Preview 3 out of 24  pages

  • October 23, 2024
  • 24
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • NUR 339 Ex
  • NUR 339 Ex
avatar-seller
gradexam
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 reverses the 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

6. Stress response


Stress is a state manifested by a specific syndrome of the body developed in response to any
stimuli that made an intense systemic demand on it.

Stressor = event or agent responsible for initiating stress response

When stress occurs, individuals react by either adapting successfully or by failing to adapt

7. Selye's General Adaptation Syndrome (GAS) --> Alarm stage


Alarm stage




Body senses stress, CNS is aroused, body releases chemicals to initiate fight-or-flight

Chemicals released


catecholamines (epinephrine and norepinephrine) and cortisol



S/S


increased HR & SV, increased mental acuity, sweaty, shaky, dilated pupils, increased RR

, 8. Selye's General Adaptation Syndrome (GAS) --> Resistance stage


Resistance stage


Body responds to stressor and attempts to return to homeostasis, utilizes coping mechanisms

Chemicals released


cortisol, glucagon, thyroid hormone, aldosterone S/S


Decreased lymphocytes, immune suppression can result in infection

9. Selye's General Adaptation Syndrome (GAS) --> Exhaustion stage


Occurs if stressor is prolonged or overwhelms ability of body to defend itself.

Resources are depleted and signs of systemic damage appear. Severe immunodeficiency due to

prolonged stress.

End-organ dysfunction (renal failure, heart failure) due to prolonged stress & SNS stimulation.

Onset of disease.

10. Adaptive (positive) vs. maladaptive (negative) responses


Adaptive re- sponses


regulate blood glucose, fluid balance, temp control, cardiac output

Maladaptive responses


PTSD, alcoholism, depressive disorders, hypertension, gastric issues, headaches, insomnia

11. Examples of stressors

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 gradexam. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $17.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

82215 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$17.99
  • (0)
  Add to cart