It perforates the Diaphragm, goes to the Heart, and ascends from thence to the Clavicles, {65} after having communicated to the Midriff in passing, a small Branch call'd the _Phrenicus_; as also one or two to the Heart, nam'd the _Coronary_; and some others to the upper Ribs, besides the single Branch, term'd _Azygos_, only on the right side. But the Trunk of the _ascending Vena Cava_, being once come up to the Clavicles, is divided into two Branches, well known by the Name of the _Subclavian_, one whereof Shoots forth toward the Right side, and the other toward the Left; and they both make various Ramifications like to those of the thick ascending Artery, by producing the _Cervicalis_ or _Soporalis_, and the Internal and External _Jugulars_ that go to the Head; as also the _Axillars_, which pass to the Arms and Shoulders, forming the _Cephalick_, the _Median_, and the _Basilick_ on the inside of the Elbow. The _descending Vena Cava_ in like manner accompanieth the Ramifications of the _Aorta_, or thick descending Artery, to the fourth _Vertebra_ of the Loins, where it sends forth two Branches, nam'd the _Iliack_, one whereof goes to the Right side, and the other to the Left, both inwardly and outwardly; imparting divers Twigs or lesser Branches to all the Parts contain'd in the _Abdomen_ or lower Belly, even as far as the Fundament, where it makes the External _Hæmorrhoidal_ Veins. Afterward the outward Branch of the _Iliack_ descends in the Thigh, to form the _Crural_, and others, as far as the _Saphæna_, together with those that are situated at the end of the Feet. * * * * * {66} CHAP XII. _Of the Anatomy of the _Abdomen_, or lower Belly_. _What is the clearest Division of the Human Body into various Parts, and that which is most followed in the Anatomical Schools?_ It is that which constitutes three _Venters_, that is to say, the Upper, the Middle, and the Lower, which are the Head, the _Thorax_ or Breast and the _Abdomen_ or lower Belly, together with the Extremities, which are the Arms and Legs. _What is the lower Belly?_ It is a Cavity of the Body that contains the nourishing parts, as the Reins, the Bladder, and all those that are appropriated to Generation in both Sexes. _What is to be consider'd outwardly in the lower Belly?_ Its different Regions, and the several parts therein contain'd. _What are these Regions?_ They are the _Epigastrick_, the _Umbilical_, and the _Hypogastrick_. _What is their Extent?_ It is from the _Xyphoides_ or Sword-like Cartilage to the _Os Pubis_, the division whereof into three equal Parts, constitutes the three different Regions; the _Epigastrium_ being the first upward, the _Umbilicus_ the second, and the _Hypogastrium_ the third. {67} _What Are the Parts contain'd in the _Epigastrium_, and what Place do they possess therein?_