the vena cava carries erythrocytes / hemoglobin that have oxygen attached. However, the de-oxygenation "blood" volume is not completely bereft of O2. See SvO2, CaO2 & CvO2 -- typical consumption is 25% of the oxygen carried arterially. Ex (Lungs): 20.1% ml/dl arterial vs. 15.5% ml/dl venous (Edwards LifeScience)
No.
yes
in the two venae cava, the inferior vena cava and superior vena cava.
the inferior vena cava caries de-oxygenated blood.
pulmonary, inferior vena cava, coronary, superior vena cava
With one exception, veins carry oxygen-poor blood back to the heart. The largest and last blood vessel they pass through is called the superior vena cava. The exception is the Pulmonary Vein, which carries oxygen-rich blood from the lungs to the heart to be pumped to the rest of the body.
blood. It is a blood vessel but more specifically a vein. Note there are two: superior vena cava (from upper part of body) & inferior vena cava (coming from lower part of body). They carry oxygen-poor blood back to the heart's right atrium then on to the lungs via the pulmonary artery to exchange carbon dioxide for fresh oxygen.
The function of superior and inferior vena cava is to take blood to the heart. The two veins will carry blood that is low in oxygen from the body to the heart.
The vena cava (both) are very large veins. All veins carry blood back to the heart. In the case of the vena cava, this is blood from the upper body (superior vena cava) and from the lower body (inferior vena cava).
vena cava
The inferior vena cava, superior vena cava, and pulmonary vein all carry blood to the heart, along with the coronary arteries, too.
vena cava