THE MAMMALIAN RATE Flashcards
What hormone is produced when we are scared/angry?
Adrenaline
Where is adrenaline produced?
Adrenaline is secreted in the adrenal glands sitting on top of each kidney
What is the flight or fight response?🤔
When stressed or angry😠 your hear rate increases⬆️
=The increased heart rate= supplies extra blood to the muscles🩸—)💪
= Which releases extra energy through aerobic respiration🤪 =which allows us to FIGHT or run away..😨
What are changes in the heart rate triggered by?
Nerve impulses from a part of the brain CALLED the MEDULLA
During respiration what does the mucles produce?
CARBON DIOXIDE IN AEROBIC RESPIRATION
How does an increase in CO2 get a response from the body?
SENSORS in the 🧠 aorta🧠 and the🧠 CORTID ARTERY 🧠 detect the increase of co2 during respiration and send nerve impulses to the MEDULLA
What does the body do after the arteries send impulses to the medulla?
The medulla responds by sending nerve impulses along the ACCELERATOR NERVE(
What does the accelerator nerve do?
Increases the heart rate and
also causes the heart to beat more forcefully = which increases the blood pressure
What happens when c02 production levels lessen?
When the CO2 production returns to normal the medulla receives LESS impulses and it responds by sending nerve impulses to the DECELERATOR NERVE
What does the decelerator nerve do?
Decreases the heart rate and reduces the force of the contractions=blood pressure becomes normal again
What causes the feeling of butterflies in the stomach?T
Blood is being redirected to the muscles 🔄 rather than the usual direction of the stomach/intestines which allow the FLIGHT/FIGHT RESPONSE
What is cardiac output?/
The total volume pumped by a ventricle every minute
How do u measure how much blood is pumped every minute?
Triangle )
cardiac output(cm3
HR(bpm) SV(cm3)
