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.
Answer:
this is because they are trying to end the pain they have inside and for the moment while doing these activities the pain goes away or is transferred to another thing.
When parasites are found in food, the food has been exposed to
undercooked fish, crabs, and mollusks.
undercooked meat; raw aquatic plants such as watercress.
raw vegetables that have been contaminated by human or animal feces
It is critical to <span>use aseptic technique when transferring the antibiotic disks to the agar in order to have a clean results. meaning, no other mircoorganisms will grow in the agar that will make the experiment a failure. by using aseptic technique, the other microorganisms will not be present </span>
