. The anatomy of the horse; a dissection guide. Horses. DISSECTION OF THE PELVIS. 361 between the lateral and superior muscles. [Besides the three muscles now to be described, there is the compressor coccygis already dissected (page 343).] The Erector Coccygis (sacro-coccygeus superior). This muscle arises from the sides and summits of the sacral spines, and it is inserted by e\iccessive short tendons to the upper aspect of the coccygeal vertebrae. Action.—Acting with its fellow, to elevate the tail directly; acting alone, to elevate the tail and incline it laterally. The CuRVATOR Coccygis (sa
. The anatomy of the horse; a dissection guide. Horses. DISSECTION OF THE PELVIS. 361 between the lateral and superior muscles. [Besides the three muscles now to be described, there is the compressor coccygis already dissected (page 343).] The Erector Coccygis (sacro-coccygeus superior). This muscle arises from the sides and summits of the sacral spines, and it is inserted by e\iccessive short tendons to the upper aspect of the coccygeal vertebrae. Action.—Acting with its fellow, to elevate the tail directly; acting alone, to elevate the tail and incline it laterally. The CuRVATOR Coccygis (sacro-coccygeus lateralis). This muscle seems to continue backwards the semispinalis of the loins. It arises from the last two lumbar spines and from the spines of the sacrum, and it is inserted into the lateral aspect of the coccygeal bones. Action.—To bend the tail to the side of the acting Fig. 48. Muscles of the Tail, deep Muscles oe the Hip, and Pelvic Licajients {Chauccaii). 1. Erector coccygis; 2. Curvator coccygis; 3. Depressor coccygis; 4. Compressor coccygis 5. Deep gluteus; tj. Rectus parvus ; 7. Common tendon of obturator internus and pyriformis 8. Gemelli; 9. Accessory fasciculus of the same ; 10. Quadratus femoris; 11. Sacro-sciatic ligament 12. Great sacro-sciatic foramen ; 13. Superior ilio-s;icral ligament; 14. Inferior ilio-sacral ligament. The Depressor Coccygis. Anteriorly this muscle consists of an outer and an inner portion, Avhich Leyh describes as separate muscles. It arises from the lower face of the sacrum, beginning about the 3rd foramen. The slips of the inner portion are inserted into the first six coccygeal A^ertebrse, while the outer portion extends to the extremity of the tail, and is provided with strong tendons of insertion. Action.—It inclines the tail laterally or depresses it, according as it acts alone or with the opposite Please note that these images are extracted from scanned page images that may have been digitally
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Keywords: ., bookcentury1800, bookdecade1880, booksubjecthorses, bookyear1884
