. Elements of zoology, to accompany the field and laboratory study of animals. Zoology. ZOOLOGY Beyond the mouth a short gullet leads to the large stomach. Next, the food passes into the upper digestive portion of the. int Fig. 313. — Diagram of viscera of a male frog, Rana Icmpumria, seen from the left side. Skeletal System: Skull: , of eranium : PMX, premaxilla; , sphenetlimoid; , cartilage base of lower jaw ; , tongue-bone (hyoid) ; , teeth on vomer bone. Vertebral Column: , centrum of third vertel)ra; , neural arch of first vertebra; UST,
. Elements of zoology, to accompany the field and laboratory study of animals. Zoology. ZOOLOGY Beyond the mouth a short gullet leads to the large stomach. Next, the food passes into the upper digestive portion of the. int Fig. 313. — Diagram of viscera of a male frog, Rana Icmpumria, seen from the left side. Skeletal System: Skull: , of eranium : PMX, premaxilla; , sphenetlimoid; , cartilage base of lower jaw ; , tongue-bone (hyoid) ; , teeth on vomer bone. Vertebral Column: , centrum of third vertel)ra; , neural arch of first vertebra; UST, urostyle. Girdles and Appendages: , epicoracoid : IL, ileum: IS, ischium; , onio- and epi-sternum; pu, pubis. Alimentary : lug. tongue; , Eustachian tube (remnant of gill-slit) ; (//.glottis; gul, gullet; si, stomach; dn, duodenum; /r, liver; , bile duct; pn, pancreas; , small intestine; rcl, rectum; d, cloaca; an, anus. Circulatohy System: cart, conus arteriosus; , left auricle; pcd, pericardium; , siiuis venosus; v, ventricle; , fat hody; , dorsal b'mph sinus ; .syj/, spleen ; L\, ventral lymph sinus. Respir.\tory' Sy'Stem : Ling, left lung; rdng, right lung ; , posterior narcs. Urogenital Sy'Stem ; kd, kidney; ur, ureter opening into the cloaca, c/, at ur' ; hi, urinary bladder opening at hi' into the cloaca; ts, testie ; , seminal vesicle. Nervous System: , cerebral hemisphere; chlm, cerebellum; sp.( . spinal cord ; olfd, olfactory lobe of Ijrain ; opld, optic lobe of brain. From Pari. : and Haswell. intestine, known as the duodenum, where the secretions of the hver and the pancreas are poured (Fig. 313). This is followed by a long, absorbing portion, and this, in turn, by the rectiun, which receives also the excretory and reproductive products, and consequently functions as a " ;. Please note that these images are extracted from scanned page images that may have been digitally enhanced
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1911
