Inductive definition of CW complexes. If the largest dimension of any of the cells is n, then the CW complex is said to have dimension n. If there is no bound to the cell dimensions then it is said to be infinite-dimensional. The n-skeleton of a CW complex is the union of the cells whose dimension is at most n.
Deoxygenated blood enters the right atrium through three major veins: the superior and inferior vena cava and the coronary sinus. The superior vena cava returns all of the blood to the heart from tissues superior to the heart in the head, neck, arms and upper thorax.
The circulatory system is big and complex. The basics are that generally arteries convey oxygenated blood, while veins carry deoxygenated blood. The left side of the pig conveys oxygenated blood and the right conveys deoxygenated. The only exception to the artery vein rule is in the pulmonary artery and vein.The pulmonary vein, in this case, conveys oxygenated blood to the left atrium away from the lungs.he aorta transports blood from the left ventricle to the arteries. The superior vena cava conveys deoxygenated blood from the upper body to the right atrium. The inferior vena cava conveys deoxygenated blood from the lower body to the right atrium. The common carotid arteries convey oxygenated blood from heart to head.