The United States Dissector; Or, Lessons in Practical Anatomy - Softcover

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1846 Excerpt: ... Littre, as a glandular body which secreted a viscid humour into the interior of the canal; the latter probably, is the part described by Winslow as the inferior prostatic muscle, which arising on each side of the membranous canal, goes to be inserted into the corresponding branch of the pubes, near the symphysis. The membranous part of the urethra does not get into the end of the bulb, but penetrates it from above, hah" an inch or more occasionally, from its extremity, just below the junction of the crura of the Corpus Cavernosum. The canal varies in its dimensions; at its commencement in the bladder it is large; it then contracts at the back of the caput gallinaginis, and immediately enlarges in the fore part of the prostate, at the sides of the urethral crest. The membranous part is small; the canal then enlarges in the bulb. In the body of the penis, the canal is successively diminished till it comes almost to the glans, when it is so remarkably enlarged as to get the name of Fossa Navicularis; it terminates, finally by a short vertical slit at the extremity of the glans. In the whole length of the canal, there are two whitish middle lines, one above, and the other below, and in the membranous and spongy portions, excepting the fossa navicularis, longitudinal folds of the lining membrane exist, which are effaced by distention. In the upper part of the canal, there are a great many mucous lacunae; Loder, in his plates has marked about sixty-five; there is one particularly large in the upper surface of the fossa navicularis, which, it is said, has stopped the point of a bougie, and been mistaken for stricture. Sir Everard Home formerly communicated to the Royal Society, a highly interesting paper, on the structure of the lining membrane of the urethr...

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