Please enable JavaScript.

Coggle requires JavaScript to display documents.

CH. 2: Homeostasis, Allostasis, & Adaptive responses to Stressors -…

- - - - Allostatic state: activity of various systems attempting to restore homeostasis
        
        Sympathetic nervous system and adrenal cortex are:
        
        Keeping glucose levels free
        
        Fatty acids and amino acids levels increase
        
        We need energy to repair damage!
        
        If the stressor is properly addressed or resolved, body's parasympathetic nervous system restores balance
        
        Body stablizes
        
        Hormone levels go back to "normal"
        
        Heart rate, blood pressure, cardiac output return to baseline
        
        Allostasis goes back to baseline, baselines can change throughout patient's life. ex. pateint has COPD, oxygen level will be different than for a non-COPD patient
        
        If the stressors are not resolved move to stage 3
    - - Allostatic overload: "cost" of body's organs and tissues for an excessive or ineffectively regulated allostatic resoponse
        
        effect of "wear and tear" on the body
        
        Organism can have disease or can lead to death
    - - Autonomic Nervous System divided between Sympathetic and Parasympathetic Nervous Systems
        
        Sympathetic Nervous system speeds up
        
        Parasympathetic Nervous system slowing us back down
      - Stimulus
        
        Hypothalamus = body at risk, fight or flight
        
        Releases anterior secreting corticotropin-releasing hormone (CRH) to activate sympathetic nervous system
        
        Stimulate adrenal medulla = sits on top of kidneys
        
        Floods body with catacholamines = norepinephrine and epinephrine
        
        Increase in:
        
        Cardiac Output
        
        Motor changes
        
        Lipolysis
        
        Glcogenolysis insulin suppression
        
        Respirations
        
        Enhance blood coagulation
        
        1 more item...