Answer:
England protected them during the French and Indian war
The inner layer of the serosal pericardium is a thin, transparent layer of simple squamous epithelium called the "visceral pericardium."
<h3>What is serosal pericardium?</h3>
A fibrous pericardium (parietal covering), which would be mirrored around the roots of the main veins to cover the whole surface of the heart, is lined by a layer of serosa called the serous pericardium (visceral layer).
Some key features of serosal pericardium are-
- There might be a little hole between the parietal & visceral layers that a small quantity of fluid might fill.
- The epicardium is the region of a visceral layer which surrounds the heart but not the major vessels.
- There are two sinuses formed by the serous pericardium as it reflects off different cardiac structures: the transverse sinus as well as the oblique sinus.
- A cul-de-sac formed by two left pulmonary circulation on one side and also the two pulmonary artery veins on the other, the oblique sinus extends superiorly from of the inferior vena cava.
- In between four pulmonary veins, its posterior wall of a left atrium forms its anterior wall. The left atrium has room to expand thanks to the oblique sinus.
- The visceral serosal pericardium is reflected from the posterior portions of the pulmonary and aortic veins onto the superior surface of the atrium to produce the transverse sinus, which is open at both ends.
To know more about serosal pericardium, here
brainly.com/question/9640114
#SPJ4
<span>The major factor involved with westward expansion was violent confrontation due to polar opposite forms of culture and government. Any oppositions from the native americans was quickly shut down by the U.S. Government.
However without western expansion our nation would be 2/3 of the size it is today.
Bad effects:
</span><span>The buffalo population was depleted, the land went from untouched to developed for people, and all the grass was grazed, the water contaminated
Good effects:
</span><span>People wanted to go west because they sought the opportunity to own land and make money. And the expansion of the railroad</span>
Answer: D) Is shared by the whole community
Explanation:
Responsibility for emergency preparedness is share among all the private sectors, individual citizens and majorly share by whole community.
Whole community basically determine the best way for emergency preparedness and understand the basic needs to strengthen their community. If the responsibilities are divided among all the community then, it ensure our own safety.
Therefore, It is the best way to take the responsibility for our own emergency preparedness.
