Ontogenesis of the Skeleton and Intrinsic Muscles of the by Dr. Radomír Čihák DrSc. (auth.)

By Dr. Radomír Čihák DrSc. (auth.)

The objective of the current booklet is to summarize the result of reports of ontogenesis of the skeleton and muscle tissues of the human hand and foot. Our fundamental curiosity in learning the muscle tissues arose from observations of diversifications, during which a brand new type of the anomalous muscle within the popliteal fossa have been defined (Cihak, 1954; Hnevkovsky and Cihak, 1957) and within which adjustments of muscle types within the congenitally malformed extremity had additionally been studied (Brlickova and Cihak, 1956). the will to explain muscle adaptations by way of the onto­ genesis ended in a learn of ontogenesis of unmarried muscle tissues. in the course of remark of the embryonic pectoralis significant specified muscle bundles have been basically saw, that could be homologised with the sphincter colli muscle of decrease Mammals. extra statement published that this muscle (concordantly with its phylo­ genetic improvement) steadily develops during human ontogenesis from a small primordium to its maximal quantity and turns into lowered thereafter and at last disappears, nonetheless throughout the embryonic interval (Cihak, 1957). This examine used to be decisive for the extra improvement of our subject matter, because it demonstra­ tes, how continually within the improvement of the locomotor equipment the rule of thumb of recapitulation is said and the way this is hired in developmental experiences of muscles.

Show description

Read Online or Download Ontogenesis of the Skeleton and Intrinsic Muscles of the Human Hand and Foot PDF

Similar medical ebooks books

Handbook of image quality: characterization and prediction

With three hundred figures, tables, and equations, this booklet offers a unified method of picture caliber examine and modeling. the writer discusses the result of varied, calibrated psychometric experiments should be carefully built-in to build predictive software program utilizing Monte Carlo simulations and offers a variety of examples of possible box purposes for product layout and verification of modeling predictions.

The Histogenesis of the Spinal Ganglia

The current evaluation is predicated at the information of the literature, and at the own event won via the writer lately via learning the histogenesis of spinal ganglia. most likely, the reader will locate multiple hole within the biblio graphy. the writer want to indicate that during no case are such gaps end result of the voluntary omission of any info, interpretations, or perspectives.

Succeeding in your GPST stage 2 situational judgement tests (SJT) / professional dilemmas : practice questions for GPST / GPVTS stage 2 selection

Situational Judgment assessments (SJTs) or expert Dilemmas shape an important a part of the GPST recruitment procedure and but many medical professionals should not have skilled questions of this kind below exam stipulations. it really is as a result crucial that applicants sitting the GPST level 2 examination have a transparent knowing of the way to strategy questions of this sort as bad functionality during this part will very likely lead to no longer progressing to the level three choice day.

Chronic Kidney Diseases - Recent Advances in Clinical and Basic Research

Continual kidney ailment (CKD) is a turning out to be all over the world public sickness as a result of the expanding variety of sufferers with diabetes and high blood pressure, but additionally from the getting older of the inhabitants. because the pathology linked to CKD seems to be to develop into extra complicated with age, it really is necessary to increase the diagnosis of sufferers struggling with CKD through constructing potent measures to avoid and keep watch over problems for the aged.

Additional resources for Ontogenesis of the Skeleton and Intrinsic Muscles of the Human Hand and Foot

Sample text

In the course of ontogenesis in the human temporary form changes of the distal radius end are visible suggesting its rearrangement. Ontogenesis of the Skeleton and Intrinsic Muscles of Human Hand and Foot 39 2. The ulnare is homologous with the ulnar styloid process; this corresponds with Holmgren's and Kindahl's concept. During ontogenesis this is manifested by a temporary large styloid process, formed and sized similarly to other carpalia, which then becomes reduced. 3. The scaphoideum originates by fusion of two centralia.

Moreover, in the course of human ontogenesis we did not succeed in finding a separate rudimentary prehallux. But at the tibial tarsus margin rudimentary adjoint tarsal primordia are found developing differently from neighbouring elements. In place of the future naviculare tuberosity an unclosed perichondrium with tissue condensation appears as a less distinct primordium, in embryos of C-R length 18 mm. The next similar formation is the plantar part of the first cuneiform (this cuneiform is divided into two parts in small embryos).

Rajtova (1967) demonstrated two scaphoideum primordia in the guinea-pig but claimed no homologies. O'Rahilly (1954) and Olivier (1962) observed the fusion of the centrale normale with the scaphoideum in the course of human ontogenesis. During ontogenesis we see the basal scaphoideum anlage always solid, without any suggestion of two parts. ) that the scaphoideum cannot correspond to the radiale, since the later is taken into the distal radius end contacted by the scaphoideum, we can only consider the homology of the scaphoid to be one of the centralia of the second collateral ray.

Download PDF sample

Rated 4.45 of 5 – based on 46 votes