FOUND-homeostasis Flashcards
what is homeostasis?
It’s the system that maintains balance and stability between the internal and external environment.
what has to happen when there is hypertension?
Increases in a persons BP should result in a negative feedback loop
which brings blood pressure back down….
Decreasing somebodies BP should result in a reflex increase.
how is long term blood pressure stability maintained?
kidney-renin-angiotensin-ACE system
how us short term blood pressure stability maintained?
adrenal glands release, adrenaline and noradrenaline
how is temperature controlled?
the thermoregulatory system of the hypothalamus
what could occur if temperature is not controlled?
- hyperthermia
- hypothermia
what would be the effectors when too cold?
skeletal muscles-for shivering
which receptors detect temperature change?
peripheral thermal receptors
what would the effectors be when too hot?
sweat glands
what happens when insulin levels fall drastically?
Diabetes (too much glucose)
how are insulin levels detected?
beta cells
what is acidosis?
pH below 7.35
what is alkalosis?
pH above 7.45
what are some symptoms associated with acidosis?
- headache
- confusion
- tiredness
- lethargy and sleepiness
- coughing and shortness of breath
- an uneven or increased heart rate
- stomach upset or feeling sick
- muscle seizures or weakness
- unconsciousness and coma
what are the symptoms associated with alkalosis?
- confusion and lightheadedness
- shaky hands
- numbness or tingling in the feet, hands, or face
- muscle twitches or spasms
- vomiting or nausea
- coma
