Health & Homeostasis Flashcards
What are 5 concepts of health that are identified by laymen?
- No concept
- No symptoms
- No disease
- Ability to function
- Idea of equilibrium
What is a professional definition of health?
“Health is the ability to adapt and self - manage” (must be defined for physical, mental and social health)
What are 5 concepts of oral health that are identified by laymen?
- Presence or absence of dental problems
- Oral pain or discomfort
- Oral self-care or other health behaviors
- Dental visiting pattern
- Dentist opinion
What is a professional definition of oral health?
“Oral heal is an integral part of general health. Oral health is “a standard of health of the oral and related tissues that enable an individual to eat, speak and socialise without active disease, discomfort or embarrassment and that contributes to general wellbeing”.
What is homeostasis?
It is a maintenance of a relatively constant internal environment. It could also be described as a “dynamic state”.
Why is homeostasis important?
Because cells need to stay within very narrow limits.
How is homeostasis maintained?
Using two systems, immediate (nervous) and long term (endocrine)
What are the two feedback loops?
Positive feedback loop (amplification), Negative feedback loop (opposition)
What is an example of negative feedback loop? Explain the steps.
Blood pressure
- Stimulus: Reduced blood volume
- Receptors: Baroreceptors
- Input: Afferent pathway to brain
- Output: Efferent pathway to Heart and Blood vessels
- Response: Heart beats harder and faster and blood vessels constricts
- Outcome: Blood pressure returns to homeostasis
What is an example of a positive feedback loop?
Blood clotting
- Stimulus: Cut
- Stimulates platelet aggregation
- Platelets join together
- And again
- Until the clot forms
