Homeostasis Flashcards
Purpose of homeostasis
Adaptation to stress and state of homeostasis
Homeostasis
State of equilibrium or tendency towards that state
Stress
Experience a person is exposed to, through a stimulus or stressor
Appraisal
Perception of the stressor by a person expressing stress
Stressors
Disruptive forces
Medulla
Controls vital functions - heart rate / blood pressure
Reticular formation helps with
Arousal
Pituitary gland
Influenced by hypothalamus
- produces hormones for adaptation to stress and secrete hormones
Frontal cortex helps with
Interpreting threat level
Hypothalamus
Secretes endorphins during stress
Pituitary gland
In brain
- makes antidiuretic hormone that stimulates more hormones or stimulates a hormone
Adrenal cortex
Found in kidneys
Stimulates cortisol - stress hormone
General adaptation syndrome (gas)
Alarm reaction
Resistance
Recovery or exhaustion
Alarm reaction
Hypothalamus releases endorphins
- increasing blood volume / blood glucose
Resistance stage
Body stabilize
- responds in opposite manner allowing hormones and cardiac output to return to normal state
Exhaustion stage
Body’s response is intensified but energy level runs out
- body can not resist effects of stressor and energy to maintain adaptation
Burn out is a result of
Chronic stress
- due to being in the exhaustion stage for a long time
Function of the sympathetic nervous system (sns)
Redirects blood flow to skeletal muscle
- increasing BP / hr/ rr
What triggers the sympathetic nervous system to cause an increase in heart rate and blood flow
Adrenal medulla releases epinephrine which
Hypothalamus directs ______ to increase adh
Pituitary
Adrenal cortex releases what
- stress hormone
Cortisol
Cortisol causes an increase in what
Powerful anti inflammatory anti immune response
- burst on energy
Highened memory functions
Burst of increase immunity
Lower sensitivity to pain
What happens when you have a prolonged period of high cortisol levels?
Impaired cognitive performance
High blood sugar
Decreased bone density
Decrease muscle tissue
Lowers immunity in general
True or false
Stress affects immunity
True
True or false
During the exhaustion stage stress can make a person sick
True - body gets tired from the over use and production of hormones
PTSD
Repeated re experiencing of a highly traumatic. Event that involved extreme threat / injury
Major features/ characteristics of PTSD
Persistent avoidance of stimuli that will trigger
Persistent increased arousal
Substance abuse
What meds are commonly given for ptsd
Antidepressants - Ssri
Antiolytics
Compassion fatigue
A form of burnout when a persons physical demand outweighs mental
Second victim syndrome
A health care worker does a medical arrow leading to harm of a patient causing them to have ptsd
- feel bad/ harmful thoughts
What is the nurses role when a patient is stressed?
Establish trust!!
- listen to patient / guide to wellness
Teach how to handle / get rid of stressors
Crisis intervention
Brief psychotherapy that creates goals for patient safety and anxiety reduction
