. The anatomy of the frog. Frogs -- Anatomy; Amphibians -- Anatomy. THE ARTERIES. 231 the skin under the mouth. It forms a rich anastomosis with branches of the Bamus maxillaris inferior of the occipital artery, and with others from the pharyng-eal branch of the carotid artery; a larg-e branch passes forwards to supply the skin of the throat and floor of the mouth. (4) The Arteria cutanea pectoris {Fig. 149 ) is distributed to the skin of the breast. 4. The subclavian artery {Arteria sithclavia), (Fig. 150 s). The subclavian artery arises from the systemic arch immediately behind the occi
. The anatomy of the frog. Frogs -- Anatomy; Amphibians -- Anatomy. THE ARTERIES. 231 the skin under the mouth. It forms a rich anastomosis with branches of the Bamus maxillaris inferior of the occipital artery, and with others from the pharyng-eal branch of the carotid artery; a larg-e branch passes forwards to supply the skin of the throat and floor of the mouth. (4) The Arteria cutanea pectoris {Fig. 149 ) is distributed to the skin of the breast. 4. The subclavian artery {Arteria sithclavia), (Fig. 150 s). The subclavian artery arises from the systemic arch immediately behind the occipito-vertebral artery at the level of the second or third vertebra. The artery then runs outwards alongside and in front of the brachial nerve, between the M. suhscapularis and the M. triceps to the arm, where it is known as the brachial artery; in its course it gives off :— a. The Arteria costo-cervicalis (Fig. 150, i). This artery arises near the systemic arch, and runs backwards, parallel to the ver- tebral column, over the brachial nerve, and across the transverse processes of the vertebrae. It is distributed more especially to the M. obliquus internns. Fig. 150. b. The Arteria coraco - clavicula- ris (Fig. 150, 2) arises more ex- ternally than the last artery ; it accompanies the coraco - clavicular nerve on the dor- sal surface of the ventral portion of the shoulder- girdle, and passes between the M. cleUoideus and M. subscapidaris into ^ , , ? * * *,, 1 ** vi -' feubclaviau artery of the left side, \ Foramen ovale, a systemic arch. * Subclavian artery A' Dorsal aorta. c Arteria cutanea medialis superior. c' Arteria cutanea medialis inferior, Is M. levator scapulae. Occipito-vertebral artery. p Arteria pectoralis. R Radial ai-tery. A'—J. where it divides to supply these muscles and the M. pjectoralis. u Ulnar artery. Arteria costo-cervicalis. Arteria coraco-elavioularis. Arteria scapularis posterior, Arteria scapularis superior. Cutaneous artery. Arteria subsca
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