deoxygenated blood
Technically, blood is always oxygenated to some degree. The capillaries are where the blood exchanges oxygen with the tissues so the blood entering the capillaries has more oxygen than the blood leaving the capillaries but under resting conditions venous blood is still 75% oxygenated.
the oxygen-rich blood coming from the lungs enters the left atrium moves in anticlockwise to be distributed in the body
The blood gets oxygen from the air around us which is made of oxygen. When we breath in, the oxygen is taken into our lungs and then into our blood.
Carbon monoxide poisoning prevents red blood cells from carrying out their normal function of transporting oxygen throughout the body. Consequently, all the cells of the body will suffer from lack of oxygen, which will prevent them from carrying out their normal metabolic functions and make them effectively shut down. The brain is the most sensitive to lack of oxygen, and within minutes, will suffer unconsciousness and then death, when deprived of oxygen.
Capillaries in your lungs provide oxygen to the haemoglobin molecules of red blood cells.
Oxygen deprived blood enters the right atrium.
Blood entering the right atrium is deoxygenated and saturated with CO2. Blood that is entering the left atrium has passed through the lungs and is oxygenated. It returns to the left atrium via the pulmonary vein and is saturated with oxygen. - Med Student
Atrium
The left atrium receives oxygen-rich blood.
Blood entering the left atrium is oxygenated blood coming from the lungs that is pumped throughout the rest of the body.
In normal human adult physiology, the CO2 concentration in the right atrium is relatively high (typically 46mmHg). In contrast, after exchange in the lungs, blood entering the left atrium has a CO2 concentration of roughly 40 mmHg. This will be different in some heart conditions and fetal circulation.
The right atrium of the heart receives oxygen-poor blood from the body.
In the leopard frog heart, the right atrium carries oxygen poor blood and the left atrium carries oxygen rich blood.
Oxygen-poor blood enters the heart through the right atrium
The left atrium receives oxygen rich blood from the pulmonary circulation. It then pumps that blood into the left ventricle.
The atrium does not carry gas. Blood flows through it. The blood in the left atrium is oxygenated.
blood oxygen