Das Cranium eines menschlichen Feten von 93 mm Sch.-St.-L�nge

Reinbach, Wolfgisbert

doi:10.1007/bf00525280

Cited by 16 publications

(8 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The anatomy of the epithelial lining and of the underlying ethmoidal skeleton of man is presented in detail in all textbooks of human anatomy. The ontogeny of the nasal capsule of man is much less well known (Reinbach, ), and hence there exist surprising gaps of knowledge. Many years ago the first author was able to prepare a sectional series of an advanced human fetus of 63 mm head length, by far the oldest stage that has ever been studied and formally described.…”

Section: Resultsmentioning

confidence: 99%

“…At first, we characterize, based on Fig. , the anatomy of the nasal capsule of the 93‐mm specimen of Reinbach (). The cupula nasi anterior is fairly narrow and slender in connection with the forward orientation of the nasal openings (Wen, ).…”

Section: Resultsmentioning

confidence: 99%

“…The proximal pedicle of the processus alaris superior is still retained. The lamina transversalis anterior does not exist, but Reinbach () attributed some small cartilages near the septum to this structure.…”

Section: Resultsmentioning

confidence: 99%

“…These drawings were based on photos given to W.M. by the late Prof. W. Reinbach, previously published in Reinbach (). The new labeling is adapted to correspond with the other figures.…”

Section: Resultsmentioning

confidence: 99%

“…The model of Reinbach (, Fig. ) shows that the pars lateralis with its prominence is well pronounced and demarcated from the slender pars anterior by a deep vertical furrow.…”

Section: Resultsmentioning

confidence: 99%

See 4 more Smart Citations

Morphology of the Nasal Capsule of Primates—With Special Reference to Daubentonia and Homo

Maier

Ruf

2014

The Anatomical Record

107

104

View full text Add to dashboard Cite

Primitive mammals are considered macrosmatic. They have very large and complicated nasal capsules, nasal cavities with extensive olfactory epithelia, and relatively large olfactory bulbs. The complicated structures of the nasal capsule follow a relatively conservative "bauplan," which is normally easy to see in earlier fetal stages; especially in altricial taxa it differentiates well into postnatal life. As anteriormost part of the chondrocranium, the nasal capsule is at first cartilaginous. Most of it ossifies endochondrally, but "appositional bone" ("Zuwachsknochen") is also common. Many fetal structures become resorbed. Together, all surviving bone structures form the ethmoid bone, but cartilages of the external nose and of the vomeronasal complex can persist throughout life. We describe in detail the anatomy of Daubentonia madagascariensis based on a fetal stage (41 mm HL) and an adult skull was analyzed by mCT. We found that the nasal capsule of this species is by far the most complicated one of all extant Primates. We also describe older fetuses of Homo sapiens (35 and 63 mm HL) as representative of a derived primate. The most significant feature of man-and probably of all anthropoids-is the complete loss of the recessus frontoturbinalis and its associated structures. It can be demonstrated that the evolutionary reductions within the primate Abbreviations used: ahy 5 ala hypochiasmatica; ane 5 apertura nasi externa; aor 5 ala orbitalis; at 5 atrioturbinale; az 5 arcus zygomaticus; bol 5 bulbus olfactorius; cat 5 concha atrioturbinalis; cdnp 5 cartilago ductus nasopalatini; cna 5 cupula nasi anterior; cnp 5 cupula nasi posterior; con 5 commissura orbitonasalis; cpa 5 cartilago paraseptalis anterior; cpal 5 cartilago palatina; cse 5 concha septalis; css 5 cartilago supraseptalis; ctu 5 cartilago tubaria; dI 5 deciduous incisor; dni 5 ductus nasi inferior; dnl 5 ductus nasolacrimalis; dnp 5 ductus nasopalatinus (Steno); dvn 5 ductus vomeronasalis; et 5 ethmoturbinale; et a 5 ethmoturbinale lamina anterior; et p 5 ethmoturbinale lamina posterior; fop 5 foramen opticum; fr 5 frontale; ft 5 frontoturbinale; gnl 5 glandula nasi lateralis; hmx 5 hiatus maxillaris; it 5 interturbinale; ju 5 jugale; la 5 lacrimale; lcr 5 lamina cribrosa; lh 5 lamina horizontalis; hsl 5 hiatus semilunaris; lor 5 lamina orbitalis; lsc 5 lamina semicircularis; lta 5 lamina transversalis anterior; lte 5 lamina terminalis; ltp 5 lamina transversalis posterior; ltr 5 lamina trabecularis; mt (mat) 5 marginoturbinale; met 5 mesethmoid; mx 5 maxillare; mxt 5 maxilloturbinale; na 5 nasale; nph 5 ductus nasopharyngeus; nt (nat) 5 nasoturbinale; nop 5 nervus opticus; osp 5 orbitosphenoid; ovn 5 organon vomeronasale (Jacobson); pal 5 palatinum; pao 5 planum antorbitale; pas 5 processus alaris superior; pet 5 processus ethmoidalis orbitosphenoidei; pmp 5 processus maxillaris posterior; pmx 5 praemaxillare; pna 5 paries nasi; ppp 5 processus paraseptalis posterius; ppt 5 processus pterygoideus; prl 5 prominentia lateralis; psp 5 praespheno...

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…These drawings were based on photos given to W.M. by the late Prof. W. Reinbach, previously published in Reinbach (). The new labeling is adapted to correspond with the other figures.…”

Section: Resultsmentioning

confidence: 99%

“…The model of Reinbach (, Fig. ) shows that the pars lateralis with its prominence is well pronounced and demarcated from the slender pars anterior by a deep vertical furrow.…”

Section: Resultsmentioning

confidence: 99%

See 3 more Smart Citations

Morphology of the Nasal Capsule of Primates—With Special Reference to Daubentonia and Homo

Maier

Ruf

2014

The Anatomical Record

107

104

View full text Add to dashboard Cite

show abstract

The human chondrocranium at the end of the embryonic period, proper, with particular reference to the nervous system

1980

View full text Add to dashboard Cite

The chondrocranium at stage 23 (27-32 mm C.-R., 8 postovulatory weeks) was studied in detail to fill the descriptive gap between 7 and 9 weeks. Serial sections of ten embryos, all belonging to the same developmental stage, were investigated and compared. Graphic and Perspektomat reconstructions were made from three embryos. The chondrocranium forms a continuous mass of well-formed cartilage, which blends with early cartilage in the nasal, orbital, and otic regions, around the future foramen rotundum, and at the site of the parietal lamina. The chondrocranium and "membrane" bones cover a relatively small portion of the brain, namely 1) the medulla and pons, 2) the caudal half of the lateral portion of the cerebellar primordium, and 3) the rostroventral part of the cerebral hemispheres. The relationships of the cranial nerves were are also investigated. The degree of cranial development is intermediate between that at stage 20 (21 mm) studied by Lewis (the only other skull so far studied adequately in a staged embryo) and that of fetuses of 40 and 43 mm investigated by Macklin. On the whole, the resemblances to the fetal skulls are greater: ossification is beginning in the tectum posterius (to form the supraoccipital), and most of the "membrane" bones (except the parietal, tympanic, lacrimal, and nasal) show osseous areas. The foramen rotundum is present. The lower angle between the chordal and prechordal parts of the basal stem ranges from 129 degrees (which resembles that at stage 20, namely 122 degrees) to 115 degrees (which is the same as that at 40-43 mm). An orbito-parietal commissure is not yet present. The lower border of the larynx is at the level of the lower border of the fourth cervical vertebra. In the larynx, the thyroid laminae have usually not fused, the hyoid cartilage possesses greater and lesser cornua, the cricoid cartilage displays its signet-ring form, and the arytenoids are identifiable as condensed mesenchyme with some early cartilage. The cartilage of the first pharyngeal arches is covered in its ventral three-fourths by an osseous mandibular plate. Morphological variations within stage 23 are minor and appeared not to be related closely to each other, so that it was not possible to arrange the embryos in a linear developmental series based on their level of cranial morphogenesis.

show abstract

Nasal Structures in Old and New World Primates

Maier

1980

Evolutionary Biology of the New World Monkeys and Continental Drift

View full text Add to dashboard Cite

Das Cranium eines menschlichen Feten von 93 mm Sch.-St.-L�nge

Cited by 16 publications

References 13 publications

Morphology of the Nasal Capsule of Primates—With Special Reference to Daubentonia and Homo

Morphology of the Nasal Capsule of Primates—With Special Reference to Daubentonia and Homo

The human chondrocranium at the end of the embryonic period, proper, with particular reference to the nervous system

Nasal Structures in Old and New World Primates

Contact Info

Product

Resources

About