P BLOOD THROUGH THE HEART

PATH OF BLOOD THROUGH THE HEART
poorly oxygenated blood (vessels: superior vena cava, inferior
vena cava → right atrium → tricuspid valve → right ventricle →
pulmonary artery → gas exchange when inhale, exhale)
⇒ rich in oxygen (pulmonary veins → left atrium → bicuspid valve
→ left ventricle → aortic semilunar valve → aorta).
The path of blood through the heart is one of the most important
processes in our body, which relates to the circulation of gas,
nutrients and hormones.
First, two large vessels will carry poorly oxygenated blood from
the body to the right atrium of the heart.
While the superior vena cava, one of these two vessels, brings
blood from the areas which are above the heart, the inferior vena
cava is responsible for the lower part of the body such as the
digestive systems and the legs.
Once blood has been transported to the right atrium, it would
then be pushed downward to the right ventricle through the
tricuspid valve.
Then the tricuspid valve closes, followed by the contraction of the
right ventricle.
The blood would later be carried to the pulmonary artery to enter
the lungs.
In here, the pulmonary arteries would branch repeatedly until
they become pulmonary capillaries, where the gas exchange
takes place when you inhale and exhale simultaneously.
The carbon dioxide would be eliminated and the blood would be
oxygenated at the same time.
Once the blood is rich in oxygen, it would be pumped into the
pulmonary veins, leading to the left atrium.
After being carried to here, the blood falls through the bicuspid
valve and enters the left ventricle.

The left ventricle would then contract, sending blood to the aorta
through the aortic semilunar valve.


In conclusion, because of the important steps of the path of blood
through the heart, we should lead a healthy lifestyle in order to
make sure that this process can be run smoothly.
- Phải đủ ý (lập dàn ý ra trước khi viết).
- Có câu mở đầu, câu kết thúc.
- Nối các câu lại với nhau để đoạn văn mạch lạc hơn (bôi đậm
in nghiêng).
- Các từ vựng chuyên ngành cần phải có (cam).
- Các cách khác nhau để diễn đạt sự “vận chuyển” (đỏ).
- Ngữ pháp:
+ Các câu đơn giản - các câu phức tạp (nghiêng gạch đít).
+ Sử dụng passive voice nhiều một chút.
+ Sử dụng các mệnh đề quan hệ (xanh) để làm câu dài ra.
+ Một số từ vựng/ cấu trúc câu thấy hay - dùng được thì
cứ thoải mái dùng, miễn dùng đúng là được (nâu).