This study was designed to reveal, in detail, the features of the auditory ossicles of the New Zealand rabbit, one of the most frequently used animals in scientific researches. Heads of 10 dead adult New Zealand rabbits of both sexes weighing 2.5 +/- 0.2 kg were used in the study. The auditory ossicles were gently removed from their situs and observed. The auditory ossicles were three small bones: the malleus, the incus and the stapes. The lenticular bone seemed to be the lenticular process, as is in human beings. In general, macroanatomic features of the bones were similar to those reported in the literature. Findings in this study, however, differed greatly, especially in detail. There were statistically significant differences in the morphometric data of the features of the auditory ossicles between the right- and left-hand sides. Data from the right-hand side were significantly higher.
This study used the New Zealand White rabbit to reveal the normal ossification development of the cervical component of the spine. Preserved cervical vertebrae representing five different age periods, each period including five individuals and the total number of animals being 25, were fixed in 3.5% formaldehyde solution and 95% ethanol, followed by a pure acetone bath. The materials were then stained with an alcian blue-alizarin red combination. The ossification centres were identical over time, and the pattern of fusion among them was homogenous and constant in appearance. There were three different primary ossification centres in all the cervical vertebrae except the axis, which showed four primary ossification centres. The dorsally located primary ossification centres later formed the pedicles of the neural arches, while the ventral centres constituted the body of each vertebra. The study was terminated at 10 weeks of age because the ossification centres observed in the cervical vertebrae completed their fusion and no further ossification centres were observed.
This study augments knowledge of bone growth by observing the development of the hyoid bone in the New Zealand White rabbit. Preserved hyoid bones representing five different age periods, each period including five individuals and the total number of animals being 25, were fixed in 3.5% formaldehyde solution and 95% ethanol, followed by a pure acetone bath. They were then stained with an alcian blue-alizarin red combination. The mode of bone formation was intracartilaginous type ossification. While the basihyoideum and thyrohyoideum were observed to start ossifying first at prenatal stage, indicating that they are the main skeletal structures of the hyoid apparatus, the ceratohyoideum and lingual process began to ossify in the second and third periods. The separately occurring primary ossification centres fused completely among themselves in the fifth period. Because no further ossification centers were observed and the ossified parts continued the development and growth, the research was terminated after 10 weeks of age.
This study aims to develop an attitude scale for the measurement of classroom and preschool teachers' attitudes towards educational games. Using a five-point Likert scale, a final form consisting of 48 items were applied to 405 different preSchool and classroom Teachers working in different cities of Turkey. Exploratory and Confirmatory Factor Analysis were conducted on the data in order to prove construct validity of the scale. Exploratory Factor Analysis demonstrated that the scale had a construct with two sub-factors. The first sub-factor consisting of 14 items explains 46.09% of the variance for the related attitude variable, while the second sub-factor consisting of 6 items explains 13.42% of the variance for the related attitude variable. Both sub-factors explain 59.51% of the variance for the related attitude variable. These factors were named as "positive attitude" and "negative attitude" by the authors. In addition, item test correlation was performed in order to prove item validity, and it was observed that item test correlations varied between 0.55 and 0.81. Confirmatory factor analysis was also performed to verify the construct obtained from exploratory factor analysis, and it was calculated as [χ2/df=3.54 (p=.
Extrinsic cardiac nerves and their patterns are described based on anatomical dissections of five goitred gazelle. Sympathetic cardiac innervation was mainly provided by the cervicothoracic and thoracic cardiac nerves. No left caudal cervicothoracic nerves, middle cervical cardiac nerves and vertebral cardiac nerves from the vertebral ganglion were observed. Parasympathetic cardiac innervation was supplied by the nerve fibres from the caudal vagal cardiac rami only. No cardiac rami from the cranial vagal cardiac nerves present in small ruminants were observed in this study. The caudal laryngeal and phrenic cardiac nerves also contributed to the cardiac innervation.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.