As a rule of thumb:
one hour metabolically impaired, one hour permanently damaged, and one last hour to death.
Not exact (percent of blood flow impaired varies, and if the heart stops beating then the time comes to a sudden stop.
(The answer you need is 30 seconds, Reference your textbook page 114) notwithstanding some book - most cells in your body are capable of some anaerobic metabolism - The big exception is the brain ... which will cease to function after 10 seconds, begin to die in 20 seconds, and have irreversible cell death in 30 seconds.
The heart will last for an hour or so ... if conditions are right. Which is why a heart transplant is possible.
20-40 minutes
More than 30 minutes
30 seconds
39 minutes
30 minutes
5 minutes
lactic acid
loss of oxygen.... the mitochondria in the cardiac muscle need it to continue to produce energy to keep the muscles contractiong without it the muscles seize from lactic acidosis a byproduct anaerobic respiration.
The muscles will produce lactic acid which feels like the muscles are burning.
Yes, cardiac muscles cells have a very high oxygen demand, since they are constantly in motion. This is why any shortage of oxygen causes angina, or if the oxygen deprivation is long enough, it causes death of the muscle cells - what is commonly called a heart attack.
Cardiac muscle have a greater need for oxygen than skeletal muscles because they use up more energy in a shorter amount of time so they require regular refills of oxygen.
The muscles will produce lactic acid which feels like the muscles are burning.
they will swim around at the surface of the water
The chances of survival for a person who has experienced a cardiac arrest in increased by early CPR and early defibrillation. During cardiac arrest, the heart is not pumping and the organs are not receiving oxygen. High quality CPR can provide the organs with oxygen until the heart can be defibrillated or restarted with drugs. Every minute that the organs, especially the brain, are deprived of oxygen decreases the chance of survival.
Without getting into it. The heart is just a muscle and muscles can't work without oxygen.
There are cardiac, smooth, and skeletal. Both cardiac and smooth are involuntary. Skeletal is voluntary. Skeletal muscles are the muscles you use to move your bones. You do these things voluntarily, like raising your arm. Skeletal muscle tires out quickly. Cardiac muscle is only found in your heart. This muscle type keeps your heart running and does not tire.
we will die