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NUR 339 ( LATEST 2024 / 2025 ) EXAM 1 | A++ EXAM WITH ALL NEW QS & AS - GUARANTEED PASS!
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NUR 339 ( LATEST 2024 / 2025 ) EXAM 1 | A++ EXAM WITH ALL NEW QS & AS - GUARANTEED PASS!
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NUR 339 Exam 11. What are the 3 brain structures responsible for maintaining homeostasis?-
Answer
medulla oblongata, pituitary gland, and the reticular formation
2. What does the medulla oblongata control?
Answer
circulation and respiration
3. What does the pituitary gland do?
Answer
controls functions of other endocrine glands which regulate growth, reproduction, and
maturation
4. What does the reticular formation regulate?
Answer
vital reflexes and CV and respi- ratory function
5. What are the 3 components of feedback mechanisms?
Answer
sensor mechanism control center
effector mechanism
6. How do negative feedback mechanisms work?
Answer
when a function is increased or decreased feedback causes opposite action and stops action
when function returns to normal
7. How do positive feedback mechanisms work?
Answer
They exaggerate the original response; proceed in the same direction as the initial disturbance
,8. 3 stages of Selye's General Adaptation Syndrome
Answer
1. Alarm
2. Resistance
3. Exhaustion
9. What chemicals are released during the alarm stage to initiate the fight or flight response?
Answer
catacholamines and cortisol
10. What are the two catecholamines?
Answer
epinephrine and norepinephrine
11. Where is cortisol released from? What is the role of cortisol?
Answer
adrenal gland increase blood glucose levels
12. What occurs during the resistance stage of adaptation?
Answer
body selects most efficient and effective channel of defense, responds to stressor, and attempts
to return to homeostasis
13. What happens during the exhaustion/recovery stage of adaptation?
Answer
body either recovers and returns to homeostasis or becomes exhausted by prolonged stressor
14. What are some adaptive responses to stress?
Answer
blood sugar control, fluid balance, and temperature control
15. what are some maladaptive responses to stress?
Answer
, ulcers, hypertension, shingles, depression, anxiety, headache, and insomnia
16. What is the cerebral cortex role in the stress response?
Answer
vigilance, focus, awareness, and cognition
17. what is the limbic system responsible for during the stress response?
Answer
-
emotions (fear, rage, excitement)
18. What is the thalamus responsible for during the stress response?
Answer
relay center
19. What is the reticular activating system responsible for during the stress response?
Answer
modulates alertness, ANS activity, skeletal muscle tone
20. What is the hypothalamus responsible for during the stress response?
Answer
-
controls and coordinates ANS and endocrine response
21. What two components regulate the SNS response?
Answer
the hypothalamus and locus coeruleus
22. In the HPA axis what does the hypothalamus secrete? What does it cause the release of?
Answer
Corticotropin releasing hormone (CRH) causes the pituitary to release adrenocorticotropic
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