LIST OF ABBREVIATIONS. 325 



1. The afferent vassels ( W. 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. 

 jmlmonalea) go to the lungs, and those of the latter {aorta) to the body in general. 



3. From two of the aortic sinuses of Valsalva arise the two AA. cardiaem which are 

 distrihuted to the substance of the heart itself. 



3. Into the right auricle open the W. cardiacw 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 foramen 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 a/rteriosus from which arises the A. pul- 

 monaiis. 



7. The auriculo -ventricular vaVoes 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, m 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 valves 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 chordae iendinece. 



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

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

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

 teria pulmonalis, § 857. — A. shclv., Arteria subclavia, § 858. — Aur. 

 dxt., Auricula dextra, § 859. — Aur. sin., Auricula sinistra, § 860. — 

 Chd. tnd.. Chordae tendinese, § 864. — Clm. car., Columnse carneBe, 

 § 865. — Con. art, Conus arteriosus, § 866. — Dct. art. Ductus ar- 

 teriosus, § 867. — Fs. ov., Fossa ovalis, § 868. — Orf. aur-vnt, Orifi- 

 cium auriculo-ventriculare, § 870. — Pcv., Postcava, § 871. — Prcv., 

 Prsecava, § 872. — Spt. aur.. Septum auriculare s. auricularum, 

 § 873. — 8pt. vnt. Septum ventriculare s. ventriculorum, § 874. — 

 8n. aur. dxt. Sinus auriculae dextrse, § 875. — Bn. aur. sin., Sinus 

 auriculae sinistrae, § 876. — 8n. cor. s. crd., Sinus coronarius s. car- 

 diacus, § 877. — Sn. Vals., Sinus Valsalvae, § 878.— Tbcl. Low., 

 Tuberculum Loweri, § 880. — Vlv. 5^■c., Valva bicuspis, § 881. — 

 Vlv. slmr., Valva semilunaris, § 882. — Ylv. Thh., Valva Thebesii, 

 § 883. — Vlv. trc, Valva tricuspis, § 884. — V. az.. Vena azygos, 

 § 885. — V. crd.. Vena cardiaca s. coronaria, § 887. — V. cv., Vena 

 cava, § 886. — V. plm., Vena pulmonalis, § 888.— Vnt dxt, Ventric- 

 ulus dexter, § 889. — Ynt sin., Ventri cuius 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 



