. Outlines of zoology. Fig. 320.—Arterial system of frog. £i Lingual; c, carotid ; j., systemic ; cm., cutaneous ; /., pulmon-ary ; V,, occipito-vertebral; br.^ brachial; , cceliaco-mesenteric ; r., renal ; //., common iliacs ; A., haemorrhoidal. the arteries, more sluggish in the veins, most sluggish in thecapillaries or fine branches which connect the arteries andthe veins. The red corpuscles are swept along most rapidly,and are often deformed by pressure; the leucocytes tend to ARTERIAL SYSTEM. 593 cling to the walls of the capillaries, and may indeed passthrough them (diapedesis). The
. Outlines of zoology. Fig. 320.—Arterial system of frog. £i Lingual; c, carotid ; j., systemic ; cm., cutaneous ; /., pulmon-ary ; V,, occipito-vertebral; br.^ brachial; , cceliaco-mesenteric ; r., renal ; //., common iliacs ; A., haemorrhoidal. the arteries, more sluggish in the veins, most sluggish in thecapillaries or fine branches which connect the arteries andthe veins. The red corpuscles are swept along most rapidly,and are often deformed by pressure; the leucocytes tend to ARTERIAL SYSTEM. 593 cling to the walls of the capillaries, and may indeed passthrough them (diapedesis). The arterial systenii—Each branch of the truncus arteri-osus is triple, and divides into three arches:— • Fig. 321.—Venous system of frog. m., /., Mandibular and lingual; ^ external jugular; , internaljugular; scp,, subscapular; ;«., innominate; jc/„ subclavian; brachial; , musculo-cutaneous; ,y hepatic vein; hepatic portal; «.«., anterior abdominal; ^ renal-portal \ pelvic;_jc., sciatic \f., femorad; i,v,c,, inferior venacava; cardiac vein. I. The carotid arch, the most anterior, corresponding tothe first efferent branchial of the tadpole, gives off— A lingual artery to the tongue ; A carotid artery, which bears near the origin of the lingual aspongy swelling (the 5carotid gland), and gives off an 38 594 AMPHIBIA. external carotid to the mouth and the orbit, and an internalcarotid to the brain. II. The systemic arch, the median one of the three,corresponding to the second efferent branchial in thetadpole, gives off— The laryngeal artery to the larynx; The oesophageal to the CESophagus; The occipito-vertebral to the head and vertebral column;
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Keywords: ., bookcentury1900, bookdecade1910, bookidcu3192, booksubjectzoology
