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.
Aorta to the ARTERIES 4. Arteries carry it into the TISSUES AND ORGANS of the body 5. From tissue/organs to ARTERIOLES 6. Arterioles to CAPILLARIES (exchange of substances O2 and CO2) 7. From capillaries to VENULES 8. Venules to VEINS SUPERIOR AND INFERIOR VENA CAVA 9. Superior and inferior vena cava return blood to RIGHT ATRIUM PULMONARY CIRCULATION BEGINS 10. Right atrium to the RIGHT VENTRICLE 11.