. The physiology of reproduction. Reproduction. MALE ACCESSORY REPRODUCTIVE ORGANS 261 are innervated exclusively from the lumbar nerves, as above described.^ In view of the facts which have been related, it would appear that ejaculation is a reflex act of some complexity involving. III. IV. Fig. 66.—Diagram illustrating innervation of internal genital organs of male oat. (From Nagel.) H., hypogastric nerve; Ur., ureter; V. D., vas deferens ; II. III. IV., branches arising from 2ud, 3rd, and 4th lumbar nerves. more than one centre in the spinal cord. The centre for the final expulsion of the s
. The physiology of reproduction. Reproduction. MALE ACCESSORY REPRODUCTIVE ORGANS 261 are innervated exclusively from the lumbar nerves, as above described.^ In view of the facts which have been related, it would appear that ejaculation is a reflex act of some complexity involving. III. IV. Fig. 66.—Diagram illustrating innervation of internal genital organs of male oat. (From Nagel.) H., hypogastric nerve; Ur., ureter; V. D., vas deferens ; II. III. IV., branches arising from 2ud, 3rd, and 4th lumbar nerves. more than one centre in the spinal cord. The centre for the final expulsion of the semen must be the same as that for erec- tion, since the muscular mechanisms concerned are to a large extent identical in each case. The centre presiding over the internal generative organs is apparently in the lumbar spinal ' Langley and Anderson, toe. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marshall, F. H. A. (Francis Hugh Adam), 1878-1949; Cramer, William, 1878-1945; Lochhead, James. London, New York, Longmans, Green
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectreproduction, bookyea
