A. Pacemaker cells located in the atria fire before the pacemaker cells in the ventricles. B. It takes time for hormones to diffuse from the atria to the ventricles to trigger contraction. C.The electrical signal generated in the right atrium is delayed at the AV node before passing to the ventricles. D.The ventricular muscle cells contract more slowly than the atrial muscle cells.
<span>Antibiotics are a type of medicine that fight off harmful bacteria by killing it, but also preventing future growth. Antibiotics are specific to the type of bacteria so that they have a better chance of killing the harmful bacteria without also harming beneficial bacteria in the body. The answer is true.</span>
Answer:
Proper technique is essential
Start slowly
Only use safe and well-maintained equipment
Explanation:
these re important to follow because it makes sure not only are you safe but the machine as well
