WordNet

the branch of biology that studies the formation and early development of living organisms
(botany) a minute rudimentary plant contained within a seed or an archegonium
an animal organism in the early stages of growth and differentiation that in higher forms merge into fetal stages but in lower forms terminate in commencement of larval life (同)conceptus, fertilized_egg

PrepTutorEJDIC

胎生学,発生学
=embryology
胎児 / 発達の初期 / 胎児の,胚の / 未発達の,初期の

English Journal

Cross-sectional Anatomy, Computed Tomography and Magnetic Resonance Imaging of the Head of Common Dolphin (Delphinus delphis) and Striped Dolphin (Stenella coeruleoalba).

Alonso-Farré JM1, Gonzalo-Orden M, Barreiro-Vázquez JD, Barreiro-Lois A, André M, Morell M, Llarena-Reino M, Monreal-Pawlowsky T, Degollada E.Author information 1Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal; Parc Zoològic de Barcelona, Parc de la Ciutadella s/n, 08003, Barcelona, Spain.AbstractComputed tomography (CT) and low-field magnetic resonance imaging (MRI) were used to scan seven by-caught dolphin cadavers, belonging to two species: four common dolphins (Delphinus delphis) and three striped dolphins (Stenella coeruleoalba). CT and MRI were obtained with the animals in ventral recumbency. After the imaging procedures, six dolphins were frozen at -20°C and sliced in the same position they were examined. Not only CT and MRI scans, but also cross sections of the heads were obtained in three body planes: transverse (slices of 1 cm thickness) in three dolphins, sagittal (5 cm thickness) in two dolphins and dorsal (5 cm thickness) in two dolphins. Relevant anatomical structures were identified and labelled on each cross section, obtaining a comprehensive bi-dimensional topographical anatomy guide of the main features of the common and the striped dolphin head. Furthermore, the anatomical cross sections were compared with their corresponding CT and MRI images, allowing an imaging identification of most of the anatomical features. CT scans produced an excellent definition of the bony and air-filled structures, while MRI allowed us to successfully identify most of the soft tissue structures in the dolphin's head. This paper provides a detailed anatomical description of the head structures of common and striped dolphins and compares anatomical cross sections with CT and MRI scans, becoming a reference guide for the interpretation of imaging studies.
Anatomia, histologia, embryologia.Anat Histol Embryol.2014 Feb 14. doi: 10.1111/ahe.12103. [Epub ahead of print]
Computed tomography (CT) and low-field magnetic resonance imaging (MRI) were used to scan seven by-caught dolphin cadavers, belonging to two species: four common dolphins (Delphinus delphis) and three striped dolphins (Stenella coeruleoalba). CT and MRI were obtained with the animals in ventral recu
PMID 24527804

Embryonic Development of Cuban Gar (Atractosteus tristoechus) Under Laboratory Conditions.

Comabella Y1, Canabal J, Hurtado A, García-Galano T.Author information 1Centro de Investigaciones Marinas, Universidad de la Habana, Calle 16 # 114 e/1ra y 3ra, Miramar, Playa, Cuba.AbstractThe embryonic development of Cuban gar (Atractosteus tristoechus) was described under controlled laboratory conditions. During the whole embryogenesis seven periods were defined: the zygote (0-½ h), cleavage (¾-4 h), blastula (5-10 h), gastrula (12-20 h), segmentation (24-40 h), pharyngula (48-66 h) and hatching (72-96 h) periods. The stages were based on morphological features, generally readily identified by examination of the embryo with the dissecting stereomicroscope. Hatching occurred 96 ± 4 h after spawning at 28°C.
Anatomia, histologia, embryologia.Anat Histol Embryol.2014 Feb 14. doi: 10.1111/ahe.12101. [Epub ahead of print]
The embryonic development of Cuban gar (Atractosteus tristoechus) was described under controlled laboratory conditions. During the whole embryogenesis seven periods were defined: the zygote (0-½ h), cleavage (¾-4 h), blastula (5-10 h), gastrula (12-20 h), segmentation (24-40 h), pharyngula (4
PMID 24527771

Sectional Anatomic and Computed Tomography Features of the Nasal and Oral Cavities of the One-humped Camel (Camelus Dromedarius).

Blanco D1, Rivero MA, Vázquez JM, Arencibia A.Author information 1Department of Morphology, Veterinary Faculty, Las Palmas de Gran Canaria University, Arucas, 35416, Spain.AbstractThe purpose of the study was to provide a description of normal cross-sectional anatomy of the camel nasal and oral cavities using computed tomography (CT) and macroscopic cross-sections. Transverse images of two isolated camel cadaver heads were obtained by an axial CT equipment. Computed tomography scans were processed with a detailed algorithm using nasal and soft tissue windows settings and compared with the corresponding frozen cross-sections of the heads, to assist in the accurate identification of nasal and oral structures. In our study, nasal window provided excellent anatomic details of nasal conchae, bones and teeth; however, other soft tissue components of the nasal and oral cavities are better differentiated using a soft tissue window. These CT images are intended to be a useful anatomic reference in the interpretation for clinical CT imaging studies of the nasal and oral cavities in dromedary camels.
Anatomia, histologia, embryologia.Anat Histol Embryol.2014 Feb 14. doi: 10.1111/ahe.12100. [Epub ahead of print]
The purpose of the study was to provide a description of normal cross-sectional anatomy of the camel nasal and oral cavities using computed tomography (CT) and macroscopic cross-sections. Transverse images of two isolated camel cadaver heads were obtained by an axial CT equipment. Computed tomograph
PMID 24527752