Cardiac muscle cells are unique in that they have great strength, flexibility and endurance. They work to pump blood through your body for your entire lifeWhat gives cardiac muscle cells the ability to do this?

Answer with Explanation:

"Cardiac muscle cells" are able to do this because they are "involuntary" in nature. They can continue pumping blood even without resting in the person's lifetime. This allows them to become even stronger over time and improve their strength, endurance and flexibility.

The rhythm of the heart's contraction largely relies on the "pacemaker cells." These are responsible for regulating the heart rate. This ability of the cardiac muscle cells is known as "autorhythmicity."

to prevent people from getting the ebola virus, countries around the world paid to doctors develop a new vaccine. now that the vaccine has been made, doctors will need to experiment on a large number of people to find out if it works safely.

what is the greatest limitation that scientists are dealing with as they try to figure out how to experiment with the ebola vaccine?

meditation is a practice of sitting still and quiet for minutes or even hours. it has been practiced for thousands of years and is even a part of religious practices for some people. carefully controlled, repeated measurements of brain activity have shown that meditation does increase certain chemicals in the brain and even grows the part of the brain that people connect with their current surroundings and activities.

are claims about the effects of meditation most likely scientific or pseudoscientific?

not pseudoscientific, because people have made claims about it but scientific observations have not been made