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NUR 339 ( LATEST 2024 / 2025 ) EXAM 6 | GUARANTEED A+ ACTUAL QUESTIONS AND ANSWERS
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NUR 339 ( LATEST 2024 / 2025 ) EXAM 6 | GUARANTEED A+ ACTUAL QUESTIONS AND ANSWERS
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NUR 339 Exam 61. This mechanism causes self-regulating functions to stop once returned to normal
Ex
Answer
Once elevated blood glucose levels return to normal, body stops produc- ing insulin
Negative Feedback
2. This mechanism takes a self-regulating function and exaggerates it
Ex
Answer
Release of platelets activates more platelets to form a blood clot
Positive Feedback
3. What are the three stages of Hans Selye's General Adaptation Syndrome (GAS)?
Answer
- Alarm Stage
- Resistance
- Exhaustion or Recovery
4. This stage of Selye's GAS begins with the body sensing stress, involving generalized
stimulation of the SNS and HPA axis
- Fight or flight response initiated
Answer
Alarm Stage
5. In this stage of Selye's GAS, the body selects to most effective channel of defense to
stressors in order to return to homeostasis
Answer
Resistance Stage
6. This stage of Selye's GAS depends on the body's ability to defend itself from stressors.
,- If the stress is prolonged, the body depletes its resources resulting in immunosuppression and
organ dysfunction.
- If the body fights off the stressors it returns to homeostasis
Answer
Exhaustion Stage OR Recovery
7. How does the CNS create a stress response?
Which organs are involved?
Answer
The CNS receives input from environment/body and creates a response
Cerebral cortex, Thalamus, Hypothalamus
8. What roles do the CNS organs play in the body's stress response?
Answer
- Cere- bral Cortex
Vigilance, focus, awareness, and cognition
- Thalamus
Relay center
- Hypothalamus
Controls and coordinates ANS and endocrine response
9. What are some physical symptoms of the fight-or-flight response?
Answer
- In- creased HR/BP
- Pallor
- Decreased urine production/GI activity
, 10. What is the role of the HPA axis in the body's stress response?
Answer
1. Hypo- thalamus secretes CRF (corticotropin releasing hormone)
2. Pituitary releases ACTH (adrenocorticotropic hormone)
3. ACTH signals adrenal glands to release glucocorticoids (cortisol)
11. How does the immune system respond to the release of cortisol caused by stress?
Answer
Cortisol suppresses the inflammatory and immune responses (immuno-
suppression/immunodeficiency)
12. What are some factors affecting stress adaptation?
Answer
Coping strategies, time, genetics, age, health, nutrition, sleep-cycle, support system
13. What is an Adaptive Capacity?
Answer
Ability to adapt to wide variety of environments and stressors
14. What is a Physiologic Reserve?
Answer
Ability of most organs to increase function to meet needs
15. What are some complications of prolonged stress?
Answer
- Failure of a component of a system (hypothyroidism, hypoglycemia)
- Dysfunction of neural-hormone connections
- Many health disorders (CV, GI, immune, neuro, etc.)
16. What is the normal WBC count?
Answer
4,000-10,000
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