LIST OF ABBREVIATIONS. 335 



1. The afferent vassels ( VV. cavm) of the former come from tlie body in general, those 

 of the latter ( VV. pulmonales) from the lungs. The efferent vessels of the former (AA. 

 pidmoncUes) go to the lungs, and those of the latter (aorta) to the iody in general. 



2. From two of the aortic sinuses of Valsalva arise the two^J. cardiaece ■which, are 

 distributed to the substance of the heart itself. 



3. Into the right auricle open the VV. ea/rdiacas which come from the substance of the 

 heart. 



4. The septal wall of the right auricle presents an oval depression, fossa ovalis, the 

 indication of a thin portion of the septum which, in the foetus, was absent, so as to permit 

 the existence of the /oroimen. ovale (§ 868). 



5. The lateral walls of the left ventricle are, upon the whole, from two to three times 

 the thicker. 



6. The right ventricle is prolonged as a conus arteriosus from which arises the A. pul- 

 monalis. 



7. The auricula-ventricular valves on the right form three divisions, hence named VV. 

 tricuspides, while those of the left form two, hence named bicuspides or mitral. 



8. The foregoing are real and constant distinctions between the right and left hearts. 

 In addition, in the diagram, on the left side, the semilunar valves are represented as closed, 

 forming bags whose convexities bulge toward the ventricle as if pressed upon by a column 

 of liquid in the artery ; the tricuspid values are also closed, as if by the pressure of a vol- 

 ume of liquid in the ventricle ; they are restrained from being carried into the auricle by 

 the chordm tendinem. 



§ 849. List of Abbreviations of Cardiac Names. — Ao., Aorta, 

 § 851. — Arc. ao., Arcus aorticus, § 854.— A. IrcpTi., Arteria brachio- 

 cephalica, § 855.— A. crd., Arteria cardiaca, § 856.— A. plm., Ar- 

 teria pulmonalis, § 857. — A. sbclv., Arteria sulbclavia, § 858.— Awr. 

 dxt, Auricula dextra, § Sm.—Aur. sin., Auricula sinistra, § 860.— 

 CM. tnd., Chordse teudinese, § 864.— CZm. car., Columnse carnese, 

 § Sm.—Con. art, Conus arteriosus, § mQ.—Bct. art, Ductus ar- 

 teriosus, § 867.— jP*. o«., Fossa ovalis, § 868.— Or/', aur-vnt, Ori^- 

 cium auriculo-ventriculare, § 870.— Pot., Postcava, § 871.— Prcu., 

 Prfficava, § ?n2.—Spt aur.. Septum aurictilare s. auricularum, 

 g 873.— >^^. vnt. Septum ventriculare s. ventriculorum, § 874.— 

 8n. aur. dxt, Sinus auriculge dextrse, § 875.— Sra. aur. sin.. Sinus 

 auriculje sinistrse, § SlQ.Sn. cor. s. crd.. Sinus coronarius s. car- 

 diacus, § 811.— Sn. Vals., Sinus Valsalvae, § Sl&.—Tbct Low., 

 Tuberculum Loweri, § QSQ.— Ylv. Uc, Valva bicuspis, § 881.— 

 "Ffo. slmr., Valva semilunaris, § 883.— 7Z«. TKb., Valva Thebesii, 

 § 883.— FZv. trc, Valva tricuspis, § 884.— F. az., Vena azygos, 

 § 885.— y; crd.. Vena cardiaca s. coronaria, § 887.— F. en.. Vena 

 cava, § 886.— F. plm., Vena pulmonalis, § 888.— F«i!. dxt, Ventric- 

 ulus dexter, § 889.— Fti^. sin., Ventriculus sinister, § 890. 



§ 850. Descriptive List of the Parts of the Heart.— The be- 

 ginner may find it advisable to read over this list with reference to 



