1), including a well-developed notochord, dorsal nerve cord, and postanal
tail during their free-living tadpole larval stage.
Fistulotomy and drainage of deep postanal
space abscess in the treatment of posterior horseshoe fistula.
El phylum Chordata esta representado por organismos deuterostomados, cuyas sinapomorfias mas evidentes son: presencia de notocorda, hendiduras faringeas, endostilo, epineuria (posicion dorsal del tubo neural) y una cola postanal
(extension corporal posterior al ano) (Barrington, 1965; Florkin & Scheer, 1974; Gans & Bell, 2001).
Caudal papillae variable in number with 10 preanal and 5 postanal
pairs, sub-ventral, second postanal
pair (from cloaca) slightly more lateral.
Notably, just days prior to Astora's letter to its physician customers announcing the decision to discontinue all of its operations, the transobturator postanal
sling system (TOPAS) for fecal incontinence, a product in the pipeline at Astora, received 3 unanimous 8-0 votes from an FDA device advisory panel on safety, efficacy, and benefit outweighing risk.
8) Several different terms have been used in the literature to describe these cysts ranging from tailgut cyst to retrorectal hamartoma, cyst of the postanal
intestine, mucus-secreting cyst, retrorectal cyst and enterogenous cyst.
For individuals <30 mm in SVL, we were unable to positively distinguish the enlarged postanal
scales Judd (1973) reported for hatchling males.
01 mm): total length (TL), standard length, head length (HL--distance from the tip of the snout to the operculum margin), predorsal length (to the anterior base of the dorsal fin), preanal length (to the anterior base of the anal fin), trunk length (distance between the operculum and the anterior base of the anal fin), tail length (distance between the anus and the tip of the notochord), caudal peduncle height (distance between the anterior base of the anal fin and the base of the dorsal fin), snout length (from the tip of the snout to the eye), posterior snout width (before the eyes), eye diameter, pectoral fin and pelvic fin lengths (distance between the anterior base and the fin margin), head width (behind the eyes), height at the pectorals, and preanal and postanal
regions (Figure 1).
Caudal end with 12 pairs of (sessile) anal papillae, arranged as 7 preanal, 1 adnal and 4 postanal
Four aggregations comprising alternating bands of pigmentation, 3 dorsal and 1 mediolateral, present along postanal
During pre-flexion and before flexion, anal melanophores increased from 13 to 16, starting on the second postanal
myomere and ending before reaching the tail.
tuft of a few simple cilia was dorsal to the anus.