homeostasis Flashcards
what is homeostasis?
constant process of equilibrium managed by multiple mechanisms.
what happens when the equilibrium is impacted?
illness occurs, affecting our physical, psychological and emotional wellbeing.
what are the three types of negative feedback mechanisms?
- the sensor
- control centre
- effector
negative feedback mechanisms: what is the sensor?
monitors specific physiological value depending on the type of body system part.
negative feedback mechanisms: what is the control centre?
compares the receptors stimulus with the normal parameters.
if it is not at the normal then the effector will be triggered.
negative feedback mechanisms: what is the effector?
the response to reverse the initial stimulus that’s outside the desired parameters.
what is the neural connection?
receptors
what is the brain in control with
the control centre
what is positive feedback mechanisms?
does the opposite to negative feedback mechanisms. trying to increase stimuli.
what are the different ways illness is described?
- diseases
- disorders
- syndromes
definition of disease:
an abnormality that causes changes in anatomical and physiological function.
definition of disorders:
more favoured over disease due to include of physical, mental, behavioural, sexual, cognitive and emotional health
definition of syndrome:
a group of signs or symptoms or characteristics that present together.
disease and injuries: acute alterations:
causes short term issues within the body and responds to rapid treatment
disease and injuries: chronic changes
causes long term anatomical and/or physiological changes which requires long term management
diseases and injuries: progressive
when condition worsen over a period of time
diseases and injuries: life-limiting:
when a conditions worsen over a period of time.
disease and injuries: acute on chronic:
when an individual with a chronic condition has an acute “flare up” or “exacerbation”
diseases and injuries: sub-acute:
when a condition cannot be classed as acute, but it is closer to being chronic.
communicable disease:
transferred by an infectious or contagious agent
non-communicable disorders:
when diseases develop due to risk factors such as lifestyles choices
congenital:
when a defect during foetal development
acquired:
any diseases that occurs after birth
what factors impacts variation in health include?
Age
Ethnicity
Environmental factors
Gender
Development
Upbringing
Genetic Factors
