<span>Myocardium
The heart has four chambers, four valves. It is composed of cardiac muscles which all in all pumps blood throughout the human body through the blood vessels. When something gets injured around the heart, well it will automatically, in high possibility stop functioning. Take not of the valves and the most important is the sinoatrial node which is the pace maker of the heart. It is what triggers the heart to pump itself and the valves then function and the blood travels and then gets cleansed out of carbon dioxide in the alveoli.<span> </span></span>
Answer:
Explanation:
Under the ancien regime (society before the French Revolution in 1789) French society was divided into what were called estates, or social orders. These were upheld both by tradition and law. There were three estates, which were structured as follows.
The First Estate encompassed the Catholic clergy. This included senior Church positions (bishops, abbots, etc.) and technically the poor parish priests who ministered to peasants in the French countryside. Higher Church officials, many of whom were also secular nobility, enjoyed considerable privileges. They were exempt from taxation and collected revenue from tithes and other fees.
Jellyfish<span> use their tentacles to sting. Most are harmless to humans but stings from some species, such as the box </span>jellyfish, can be very painful and sometimes kill. <span>Lacking brains, blood, or even hearts, jellyfish are pretty simple critters. They are composed of three layers: an </span>outer<span> layer, called the epidermis; a middle layer made of a </span>thick<span>, </span>elastic<span>, jelly-like substance called mesoglea; and an inner layer, called the gastrodermis.
If you need more information let me know (also sorry if i misspelled words) </span>
A is 2
b is 1
c is 3
I'm not sure but i hope this helps
