The class-book of anatomy : designed for schools, explanatory of the first principles of human mechanism, as the basis of physical education . the masseter mus-cle ; h, depressor anguli oris, having running under it the externalmaxillary artery ; i, the zygomaticus major, directing the eye alsoto the coronary arteries of the lips ; q, the nasal artery ; r, the ter-mination of the temporal artery, in minute twigs on the top of thehead. After all that is said about the catalogue of arteries laid•down in the human body, there is really but one artery, allothers being branches from it. But to answ
The class-book of anatomy : designed for schools, explanatory of the first principles of human mechanism, as the basis of physical education . the masseter mus-cle ; h, depressor anguli oris, having running under it the externalmaxillary artery ; i, the zygomaticus major, directing the eye alsoto the coronary arteries of the lips ; q, the nasal artery ; r, the ter-mination of the temporal artery, in minute twigs on the top of thehead. After all that is said about the catalogue of arteries laid•down in the human body, there is really but one artery, allothers being branches from it. But to answer the purpos-es of the surgeon, it is absolutely necessary to treat ofeach twig distinctly, in order that its relation to other partsmay be impressed on the mind of an operator. This one artery, the primitive trunk, is the aorta, rear-ing itself out of the left ventricle of the heart: collectivelythe parent tube, with its subdivisions into thousands oftortuous pipes, is denominated the aortic system; andwhen arteries and veins are spoken of together, as a whole,the term sanguiferous system is used. 136 ANATOMICAL CLASS BOOK. FiS. Explanation of Fig. diagram may be regarded as perfectly true to nature. Thedesign is to show how the blood is conveyed to deep seated musclesof the face, and to the membranes covering the brain, within theskull: —all the vessels now under the eye, are branches, originat-ing from the trunk of the external carotid artery, shown in the pre-ceding plan, a, is the middle or %mt meningeal artery of the duramater. By the side of the ear, lies the trunk of the internal max-illary artery, supplying a vast quantity of blood to the muscles ofthe face; part of the jaw and the process of the temporal bone is re-moved, to explain tho manner of its course under and about them. b, a branch of the inferior maxillary artery, seen in the other plan : c, posterior temporal branch ; d, ?pterygoid arteries, supplying thosemuscles which move the jaw, in ch
Size: 1518px × 1645px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1830, booksubjectanatomy, bookyear1834
