The American medical intelligencer Volume 1

Robley Dunglison

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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: ...the abdominal ring, aids in the formation of the spermatic cord, and terminates insensibly on the inner surface of the scrotum. It draws the testicle upwards. The cellular substance, that connects the dartos and cremaster with the tunica vaginalis, has been considered by some as an additional coat, and termed tunica vaginalis communis. The tunica vaginalis or tunica elytro'ides is a true serous membrane, enveloping the testicle and lining the scrotum; having, consequently a scrotal and a testicular portion. We shall see, hereafter, that it is a dependence of the peritoneum, passing before the testicle in its descent, and afterwards becoming separated from any direct communication with the abdomen. The vas deferens ciius. 5.5. Ureters. 6, G. V« or excretory duct of the testicle commences de"erent;»,-. 7-7; Veeicute semi,. r,.,..._, nales. Triangular area, corre at the globus minor Ot the epididymis, (C, sponding with trigonum vesica; Fig. 277,) which is itself, we have seen, lf,roV?h. 'hich.,he bl,adder, J 111 mi, would be pierced, in puncturing formed Ot a convoluted tube. lhlS, when it through the rectum. The doited unfolded, according to Monro, measures as line forming base of this triangular much as thirty-two feet. As soon as the vas deferens quits the testicle, it joins the spermatic cord, passes upwards to the abdominal ring, separates from the blood-vessels on entering the abdomen, and descends downwards and inwards to the posterior and inferior part of the bladder, passing between the bas-fond of the latter and the ureter. It then converges tovvards its fellow along the under extremity of the bladder, at the inner margin of the vesicula seminalis of the same side, and ultimately opens into the urethra near the neck of the bladder. (Fi...

Human Physiology Volume 2

History

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. 1850 Excerpt: ...of another, we have a case of gomphosis. It is exhibited in the union between the teeth and their sockets. Lastly, schindylesis is when the lamina of one bone is received into a groove of another; as in the articulation of the vomer, which separates the nasal fossae from each other.. The movable articulations comprise two orders:--amphiarthroses, in which the two bones are intimately united by an intermediate substance, of a soft and flexible character, as in the junction of the vertebrae with each other; and diarthroses, properly so called. The last admit of three subdivisions--enarthroses or ball and socket joints; the condyloid, in which, owing to the head being oval, the movements are not as easy in all directions as when it is spherical; and the ginglymoid or ginglymus, in which the motion can occur in only one direction, as in a hinge. The farther subdivision of the joints belongs more to anatomy than to physiology. The articular surfaces of bones never come into immediate contact. They are tipped with a firm, highly elastic substance, called cartilage; which, by its smoothness, enables the bones to move easily upon each other; and may have some influence in deadening shocks, and defending the bones, which it covers. The arrangement of cartilage varies according to the shape of the extremity of the bone. If it be spherical, the cartilage is thick at the centre, and gradually diminishes towards the circumference. In the cavity, the reverse is the case; the cartilage is thin at the centre, and becomes thicker towards the circumference; whilst on a trochlea or pulley its thickness is nearly every where alike. An admirable provision against displacement of bones at the articulations is seen in the ligaments. These, by the French anatomists, are distinguis...

Human physiology Volume 1

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Books by Robley Dunglison

See the best price to sell, buy, or rent books by Robley Dunglison. BookScouter helps to compare book prices from 25+ online bookstores and 30+ buyback vendors with a single search.

The American medical intelligencer Volume 1

Human Physiology Volume 2

Human physiology Volume 1