The healthy body Flashcards
What is homeostasis?
The regulation of the body’s internal environment to an approximately constant rate.
Give examples of homeostasis in the body.
Osmolarity, nutrients, water, sodium, calcium, oxygen and hormones.
What is the range for body temperature?
35.5-37.7 degrees celsius.
What is the ideal blood pressure?
120/80
What is the ideal range for heartrate?
60-80bpm.
What does the physiology mean, in relation to homeostasis?
Used if the body is health, and homeostasis is maintained
What does the word pathophysiology mean, in relation to homeostasis?
Used if the body is not healthy, and homeostasis is not maintained
What is a disruptor?
Stimuli that cause a change in balance.
What is detection?
Alerting the body that a change has occurred.
What are effectors?
Carry out a response to return the body to the original state and restore the balance.
What is a stimulus response sequence/reflex?
The pathway of stimuli, detectors and effectors restoring the balance of the body.
What is the fluid around/between cells called?
Interstitial fluid.
What does health mean?
That all parts of the body are functioning properly.
What is the biomedical model of health?
The idea that the body is like a machine - interconnected but can all be treated separately. Illness if a malfunction of the parts of the body which is measurable. It has an emphasis on scientific methods and knowledge.
What other factors can affect general health?
Eating/drinking habits, genetics and gender.
What is the biopsychosocial model of health?
The idea that the state of mind can affect susceptibility to illness and disease.
illnesses have underlying biological causes
What is the common-sense model of illness?
The psychological equivalent of homeostasis.
What is the idea of the illness iceberg?
That only a small number of symptoms can actually be seen by doctors.
What is the medic students disease?
The idea that medics can catch negative behaviour from other medics - an anxious mood environment.
What is symptom identity?
Beliefs concerning the illness label/diagnosis and associated symptoms of the illness.
why do we need optimum pH and temp
for biochemical reactions to take place
Why does homeostasis matter
idea of mass conservation means total amount of substance X= (intake + production)-(excretion-metabolism)
positive feedback
enhances production of product
negative feedback
system shuts off once endpoint reached
what is body fluid
watery solution of dissolved substances in the body
ECF =
plasma (fluid portion of blood) + ISF
how does the biomedical model of health match out experiences?
it doesn’t, health relates to behaviours
What does the World Health Organisation define health as?
state of physical, mental and social wellbeing, not merely the absence of disease
Self Regulatory model
examines relationship between individuals cognitive representation of their illness and subsequent coping behaviour
(psychological version of homeostasis)
factors affecting symptom perception
demographics, personality traits, environment, mood, social factors eg men more susceptible to heart disease
What are illness cognitions
a person’s own common self beliefs and thoughts about their health and illness
When we experience a sign/symptom what are the 5 domains we think about it in?
identity cause timeline (acute- limited duration, cyclic- episodes come and go, chronic-long term) consequences curability and controllability
