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 283. Part VI. A N 'A T O M Y teftinum colon. P,'One of the ligaments of the co- Fig. 5. Shews the heart and large veflels of a foetus at the full time. lon, which is a bundle of longitudinal mufcular fibres. Jejunum and ilium. R R, Sigmoid flex- a, The left ventricle, b, The right ventricle, c, A ure of the colon with the ligament continued, and o- part of the right auricle, d. Left auricle, e e, The ver S, The redlum inteftinum. T T, Levatores ani. right branch of the pulmonary artery, f, Arteria U, Sphindter ani. V, The-place to which. the pro- pulmonalis. g g, The left branch of the pulmonary artery, with a number of its largell branches difledted ftate gland is connedted. W, The anus. from the lungs, h, The canalis arteriofus. -i, The Fig. 4. Shews the heart of a foetus at the full time, arch of the aorta, k k, The aorta defcendens. 1, The with the right auricl*-cut open-to (hew the foramen left fubclavian artery. m, The left carotid artery, n, The right carotid artery, o. The right fubclaovale, or paflage between both auricles, artery, p. The origin of the right carotid and a, The right ventricle, b. The left ventricle, c c. The vian arteries in one common trunk, q, The outer fide of the right auricle ftretched out. dd. The right fubclavian cava fuperior or defcendens. r, The right pofterior fide, which forms the anterior fide of the fep- vena common fubclavian vein, s, The left common fubtum. e, The foramen ovale, with the membrane or clavian vein. valve which covers thejeft fide.^ f, Vena cava infeN. B. All the parts defcribed in this figure are to be ’ rior pafling through g, A portion of the diaphragm. found in the adult, except the canalis arteriofus. EXPLANATION of PLATE XX. edges of the ligamenta lata, which conne&s the Fig. 1. Reprefents the under and pofierior fide of the cut uterus to the pelvis. h, The infide of the vagina, bladder of urine, isc. _ The orifice of the urethra, k, The clitoris fura, The bladder. b b. The infertion of the ureters, i,rounded by (!,) the prasputium. m m. The labia c c, The vafa deferentia, which convey the femen from the tefticles to d d. The veficulse feminales,— pudendi. n n. The nymphae. and pafs through e, The prollate gland, to difcharge Fig. 5. Shews the fpermatic du£ts of the tefiicle filled themfelves into' f. The beginning of the urethra. with mercury. Fig. 2. A tranfverfe fedlion of the penis, A, The vas deferens. B, Its beginning, which forms g g, Copora cavernofa penis, h, Corpus cavernofum ure- the polterior part of the epididymis. C, The middle thra:. i. Urethra, k, Septum penis. 11, The feptum of the epididymis, compofed of ferpentine dudts. between the corpus cavernofum urethrae, and that of D, The head or anterior part of the epididymis unravelled. e e e e. The whole dudts which compofe the penis. the head of the epididymis, unravelled, f f. The vaFig. 3. A longitudinal fedlion of the penis.. la g g, Rete tellis. h h, Some redtiliin m, The corpora cavernofa penis, divided by o, The nealefFerentia. dudts which fend off the vafa efferentia. i i. The: feptum penis, n, The corpus cavernofum glandis, fubftance of the tefticle. which is the continuation of that of the urethra. Fig. 6. The right intire, and the epididymis Fig. 4. Reprefents the female organs of generation, filledtefticle with mercury. a. That fide of the uterus which is next the os facrum. A, The beginning of the vas deferens. B, The vas de1, Its fundns. 2, Its cervix, b b. The Fallopian ferens afeending towards the abdomen. G, The poor uterine tubes, which opens into the cavity of the fterior of the epididymis, named globus minor. uterus;—but the other end is open within the pelvis, D, The.partfpermatic inclofed in-cellular fubftance. and furrounded by c c. The fimbrise. d d,.The ova-. E, The body of thevelfels epididymis. F, Its head, named ria. e, The os internum uteri, or mouth of the womb, globus major. G,. Its beginning from the tefticle. f f. The ligamenta rotunda, which pafles without the The body of the tefticle, inclofed in the tunica belly, and is fixed to the, labia pudendi. g g. The H, albuginea., Sect. IV. Of the and its Appendages. The name of brain is given to all that mafs which fills the cavity of the cranium, and which is imnjediate]y furrounded by two membranes called meninges or matres.

This general mafs' is divided into three particular portions ; the cerebrum or brain properly fo called, the cerebellum, and medulla oblongata. To thefe three parts. a fourth is added, which fills the great canal of the fpina dorfi, by the name of medulla fpinalis, being a continuation of the medulla oblongata. The