P wave is the atria “firing”/depolarizing, the QRS complex is the ventricles depolarizing (and the atria are depolarizing while this happens), and the T wave is the ventricles depolarizing. Depolarizing is when it contracts, and repolarizing is when it relaxes and refills.
Answer:
D
Explanation:
The point of hands only CPR is to make it easier on those with a lack of training a give them a way to give care to someone who needs it even if they do not know how to, the point is that if you are not in sports med or EMT training then you will at least be able to help if no one else is around, otherwise use an AED
Answer:
In addition to fighting fires, firefighters also treat sick or injured people, report to car accidents, extricate people from damaged motor vehicles, and assist at hazardous materials spills.
Explanation:
<u>Insufficient </u><u>lung </u><u>capacity</u> is scba limitation would a firefighter be able to overcome through physical fitness and regular medical evaluations.
<h3>What are the limitations of respirator?</h3>
Full-face respirators are bulkier than half-masks and are frequently less pleasant to use. Full-face air purifying respirators cannot be utilized for all sorts of air contaminants because the type and capacity of the filters and cartridges used limit their use.
<h3>What is the capacity of SCBA?</h3>
SCBA Cylinders are available in five sizes to accommodate all <em>Self Contained Breathing Apparatus</em> (SCBA) and Emergency Escape Breathing Devices: 2L, 3L, 6.8L, 9L, and 10L. (EEBD).
The SCBA delivers compressed oxygen from the oxygen cylinder to the wearer via cylinder valves, pressure reducers, demand valves, and other components. The absorbing canister absorbs carbon dioxide from exhaled air, and the breathing bag resupplies oxygen.
To know more about valves:
brainly.com/question/1388046
#SPJ4
