It wasn’t that long ago that the
Burka was described as a letterbox. Now it is accepted as a standard face covering and masks are compulsory in certain places and all public transport.
The Centers for Disease Control and Prevention (CDC) and the World Health Organization now recommend cloth masks for the general public and it has now become monitory dispite earlier
Recommendations of the opposite
Carbon dioxide is made in our bodies .The lungs and respiratory system allow oxygen in the air to be taken into the body, while also letting the body get rid of carbon dioxide in the air which we breathed out. … This makes the chest cavity bigger and pulls air through the nose or mouth into the lungs.
How Do the Lungs and Respiratory System Work?
The cells in our bodies need oxygen to stay alive. Carbon dioxide is made in our bodies as cells do their jobs.
The lungs and respiratory system allow oxygen in the air to be taken into the body, while also letting the body get rid of carbon dioxide in the air breathed out.
When you breathe in, the diaphragm moves downward toward the abdomen, and the rib muscles pull the ribs upward and outward. This makes the chest cavity bigger and pulls air through the nose or mouth into the lungs.
In exhalation, the diaphragm moves upward and the chest wall muscles relax, causing the chest cavity to get smaller and push air out of respiratory system through the nose or mouth.
Every few seconds, with each inhalation, air fills a large portion of the millions of alveoli. In a process called diffusion, oxygen moves from the alveoli to the blood through the capillaries (tiny blood vessels) lining the alveolar walls. Once in the bloodstream, oxygen gets picked up by the hemoglobin hemoglobin in red blood cells. This oxygen-rich blood then flows back to the heart, which pumps it through the arteries to oxygen-hungry tissues throughout the body.
In the tiny capillaries of the body tissues, oxygen is freed from the hemoglobin and moves into the cells. Carbon dioxide, made by the cells as they do their work, moves out of the cells into the capillaries, where most of it dissolves in the plasma of the blood. Blood rich in carbon dioxide then returns to the heart via the veins. From the heart, this blood is pumped to the lungs, where carbon dioxide passes into the alveoli to be exhaled.
- December 9, 2021