Thiertypen Säugethiere [Material gráfico]

Contenido parcial: II. Erste Reihe: Handthiere (Primates), Dritte Ordung: Die Halbaffen o der Aeffer (Hemipitheciod, Prosimii), Erste Familie: Kurzfüsser (Brachytarsi). Der Plumpe Lori, Der BartmakiContenido parcial: VII. VIII [Achte] Ordung: Die Klammerthiere (Tardigrada). Dus dreizehige faultierContenido parcial: VIII. Neunte Ordung: Die Schurrlhiere [Effodientia]. Narktschmänziges Gürtelthier (Dasypus Gymnurus). Zehnte Ordung: Die Kloaken oder Gubelthiere [Monotremata]. Ornithorhynchus paradoxus Schnabelthier / G. Mützel [grafiker]Contenido parcial: Fünfzehnte Ordung: Die Sierenen (Sirenia). Der schmalschanauzige Lamantin (Manatus australis) nach A. E. Brehm's illustrirtem ThierlebenContenido parcial: Die Wiederkäuer (Ruminantia). Entwickelungsstufen des Geweihes des Edelhirsches (Cervus elephus) nach Dr. W. SoemmeringFechas deducidas de la actividad del editorLám. con anilla

A Review of the Evidence Germane to the Putative Protective Role of the Macular Carotenoids for Age-Related Macular Degeneration

There is a consensus that age-related macular degeneration (AMD) is the result of (photo)- oxidative-induced retinal injury and its inflammatory sequelae, the latter being influenced by genetic background. The dietary carotenoids, lutein (L), zeaxanthin (Z), and meso-zeaxanthin (meso-Z), accumulate at the macula, where they are collectively known as macular pigment (MP). The anatomic (central retinal), biochemical (anti-oxidant) and optical (short-wavelength- filtering) properties of this pigment have generated interest in the biologically plausible rationale that MP may confer protection against AMD. Level 1 evidence has shown that dietary supplementation with broad-spectrum anti-oxidants results in risk reduction for AMD progression. Studies have demonstrated that MP rises in response to supplementation with the macular carotenoids, although level 1 evidence that such supplementation results in risk reduction of AMD and/or its progression is still lacking. Although appropriately weighted attention should be accorded to higher levels of evidence, the totality of available data should be appraised in an attempt to inform professional practice. In this context, the literature demonstrates that supplementation with the macular carotenoids is probably the best means of fortifying the anti-oxidant defenses of the macula, thus putatively reducing the risk of AMD and/or its progression

Facial duplication: Case, review, and embryogenesis

The craniofacial anatomy of an infant with facial duplication is described. There were four eyes, two noses, two maxillae, and one mandible. Anterior to the single pituitary the brain was duplicated and there was bilateral arhinencephaly. Portions of the brain were extruded into a large frontal encephalocele. Cases of symmetrical facial duplication reported in the literature range from two complete faces on a single head (diprosopus) to simple nasal duplication. The variety of patterns of duplication suggests that the doubling of facial components arises in several different ways: Forking of the notochord, duplication of the prosencephalon, duplication of the olfactory placodes, and duplication of maxillary and/or mandibular growth centers around the margins of the stomatodeal plate. Among reported cases, the female:male ratio is 2:1.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/38153/1/1420250205_ftp.pd

ROM mapping of ligamentous constraints on avian hip mobility: implications for extinct ornithodirans

Studies of soft tissue effects on joint mobility in extant animals can help to constrain hypotheses about joint mobility in extinct animals. However, joint mobility must be considered in three dimensions simultaneously, and applications of mobility data to extinct taxa require both a phylogenetically informed reconstruction of articular morphology and justifications for why specific structures' effects on mobility are inferred to be similar. We manipulated cadaveric hip joints of common quail and recorded biplanar fluoroscopic videos to measure a 'ligamentous' range of motion (ROM), which was then compared to an 'osteological' ROM on a ROM map. Nearly 95% of the joint poses predicted to be possible at the hip based on osteological manipulation were rendered impossible by ligamentous constraints. Because the hip joint capsule reliably includes a ventral ligamentous thickening in extant diapsids, the hip abduction of extinct ornithodirans with an offset femoral head and thin articular cartilage was probably similarly constrained by ligaments as that of birds. Consequently, in the absence of extraordinary evidence to the contrary, our analysis casts doubt on the 'batlike' hip pose traditionally inferred for pterosaurs and basal maniraptorans, and underscores that reconstructions of joint mobility based on manipulations of bones alone can be misleading