100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
NUR 339 ( LATEST 2024 / 2025 ) EXAM 4 | QUESTIONS AND ANSWERS INCLUDED $16.99   Add to cart

Exam (elaborations)

NUR 339 ( LATEST 2024 / 2025 ) EXAM 4 | QUESTIONS AND ANSWERS INCLUDED

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

NUR 339 ( LATEST 2024 / 2025 ) EXAM 4 | QUESTIONS AND ANSWERS INCLUDED

Preview 3 out of 23  pages

  • October 23, 2024
  • 23
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • NUR 339 Ex
  • NUR 339 Ex
avatar-seller
gradexam
NUR 339 Exam 4

1. What is homeostasis?
Answer
level of constancy maintained by body during time of change

2. What are used to maintain homeostasis?
Answer
control systems (there are thou- sands in the body)

3. What is an example of a control system?
Answer
blood glucose

4. What are feedback mechanisms?
Answer
self-regulating mechanisms which control homeostasis

5. What are the 3 components of feedback mechanisms?

Answer
sensor mechanism, control center, effector mechanism

6. What does the sensor mechanism component of the feedback mechanism do?
Answer
senses disruption

7. What does the control center component of the feedback mechanism do?-



Answer
regulates response of the body (usually through the CNS)

8. What does the effector mechanism component of the feedback mechanism do?

,Answer
acts to restore homeostasis (the sympathetic nervous system is an effector mechanism)

9. What does negative feedback do?
Answer
When a function increases or decreases, feedback causes opposite action and stops action when
function returned to normal (corrects deficit in system)

10. What are examples of negative feedback loops?
Answer
increased blood sugar, increased blood osmolarity

11. What does a positive feedback loop do?
Answer
takes original response and exag- gerates it (these are rare)

12. What is an example of a positive feedback loop?
Answer
intensification of contrac- tions during labor caused by increased oxytocin

13. What are the 3 structures of the brain responsible for homeostasis?
Answer
-

medulla oblongata, pituitary gland, reticular formation

14. What does the medulla oblongata do for homeostasis?
Answer
controls vital func- tions such as circulation and respiration

15. What does the pituitary gland do for homeostasis?
Answer
controls function of other endocrine glands which regulates growth, reproduction and
maturation

, 16. What does the reticular formation do for homeostasis?
Answer
network which regulates vital reflexes of CV and respiratory function

17. What is the key to adaptation?
Answer
responses are efficient and effective (short term rather than long-term)

18. What does a maladaptive stress response cause?
Answer
disease

19. What are the 3 stages of Selye's GAS syndrome?
Answer
Alarm stage, resistance, exhaustion or recovery




20. What chemicals are released during the Alarm stage?
Answer
catecholamines and cortisol

21. What happens during the alarm stage?
Answer
generalized stimulation of SNS and HPA axis, the body senses stress, CNS is aroused, body
releases chemicals to initiate fight-or-flight response, activation of defensive abilities

22. What are manifestations of the alarm stage?
Answer
increased heart rate, de- creased stroke volume, dilated pupils, sweaty palms, increased mental
acuity

23. What happens during the resistance stage?
Answer

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 $16.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

71498 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
$16.99
  • (0)
  Add to cart