100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
PSIO 305 Exam 4 Bao with Verified Answers CA$13.80   Add to cart
Quickly navigate to
Preview
  2.  
  3. PSIO 305
  4.  
  5. PSIO 305

Exam (elaborations)

PSIO 305 Exam 4 Bao with Verified Answers
 0 view  0 purchase
  • Course
  • PSIO 305
  • Institution
  • PSIO 305

PSIO 305 Exam 4 Bao with Verified Answers 1. stressor a physical (external), chemical (internal), or psychological (mental) factor resulting in tension of the body or mind 2. goal of stress re- sponse 3. 4 normal stress responses of the body 4. Stress response: Sympathetic acti- vation 5...

[Show more]

Preview 2 out of 5  pages

Document information

  • August 2, 2024
  • 5
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • psio 305 exam 4 bao with verified answers

Written for

  • PSIO 305
  • PSIO 305

Seller

avatar-seller
MERCYTRISHIA

Reviews received

Content preview

PSIO 305 Exam 4 Bao with Verified Answers
1. stressor a physical (external), chemical (internal), or psychological
(mental) factor resulting in tension of the body or mind

2. goal of stress re- maintain or re-gain homeostasis
sponse

3. 4 normal stress 1. sympathetic activation (within 2-3 seconds)
responses of the 2. activation of adrenal medulla (20-30 seconds)
body 3. HPA axis activation (mins, hrs, or days)
4. cortisol neg feedback suppresses stress response (re-
turn to normal state after stress)

4. Stress response: - HR increase, vasoconstriction, sodium/water retention
Sympathetic acti- lead to higher BP and better blood circulation
vation - Glycogenolysis, neoglucogenesis, lipolysis make nutri-
ents more available
- Bronchial dilation results in more O2 intake
- Pupil dilation - more sensory info sent to brain
- Reduced digestion and bladder relaxation direct re-
sources and attention to stressor
- Increased bloodflow to skeletal muscle - Sympathetic in-
nervation of blood vessels of skeletal muscle is cholinergic
in animals and is mediated by E/beta2 receptors in both
animals and humans but to a lesser degree

5. Stress response: - release Epinephrine, similar function as Sympathetic
Adrenal medulla activity
activation - sympathetic activity wanes quickly, E is more long lasting

6. Stress response: - Glucocorticoids : breaking down proteins, fatty acids, and
HPA axis glycogen; gluconeogenesis; vasoconstriction; immuno-
suppression
- Minerolocorticoids : sodium/water retention to increase
blood volume/pressure
continue to support fight or flight

7. Stress response return to normal state after stress
: Cortisol neg HPA axis not meant to sustain the response


1/5

, PSIO 305 Exam 4 Bao with Verified Answers
feedback to sup-
press response

8. Defining symp- 1. Intrusive memories - recurrent, unwanted memories of
toms of PTSD traumatic event, nightmares, etc

2. Avoidance - avoiding thinking/talking about the event,
avoiding reminders of it

3. Cognitive and mood disorder - negative thoughts about
self, other people and world, memory problems, lack of
interest, detached, etc

4. Changes in physical and emotional reactions - easily
startled, on guard, self-destructive behavior, trouble sleep-
ing, irritability, aggression, guilt/shame

9. Hypocortisolism in PTSD, NE/E and CRH levels elevated but cortisol is
reduced
- higher CRH and lower cortisol leads to overactive sym-
pathetic activity
- High CRH causes hippocampal atrophy
- Low cortisol causes autoimmune disease
10. Cortisol and - low levels of cortisol before/shortly after trauma is predic-
PTSD risk factors tive of subsequent PTSD
- high cortisol associated with low incidence of PTSD
- high dose corticosterone reduces subsequent PTSD in
animals

11. Genetic influ- -Monozygotic twins have significantly higher concordance
ences of PTSD for PTSD than dizygotic twins
-estimated 30% heritability

-genes associated with HPA axis are associated with
PTSD

12. Epigenetic influ- - changes to genome (gene expression) but not the
ences on PTSD DNA sequence --> DNA methylation, histone methyla-
tion/acetylation
2/5

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 MERCYTRISHIA. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for CA$13.80. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

73243 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
CA$13.80
  • (0)
  Add to cart