Using videos in active learning: An experience in veterinary anatomy.

Examination failure rate is high in veterinary anatomy in Brazilian universities. We report here our active learning experience in which students recorded video reports on veterinary anatomical specimens of locomotor apparatus to support classic learning. Eighteen students were divided into 2 groups, case group (V3) and control (E). Case group students individually recorded video reports of prosected specimens weekly. Acceptance and efficacy of the strategy were assessed with a Likert scale anonymous questionnaire and students' scores in theoretical exams. The method was highly accepted and the performance test proved that recording videos is an effective strategy for active learning in anatomy.

Collagen quantification in the ventricular walls of the heart of the common marmoset (Callithrix jacchus).

The excellent adaptability of Callithrix jacchus to life in captivity presents advantages in comparison to other nonhuman primates that are used in experimental models for biomedical research, which explains the increasing scientific interest in investigating the anatomical characteristics of this species. Owing to the relative scarcity of publications on the descriptive morphology of the heart of C. jacchus, the aim of this study was to quantify the presence of collagen in the left and right ventricular myocardium using modified picrosirius red and acid fuchsine colorimetric assays. The myocardium of the right ventricle presented a higher percentage of collagen than that of the left ventricle. No sex-related differences were observed between the groups. Interestingly, the absolute values of collagen were different depending on the method used for quantification (modified picrosirius red vs. acid fuchsine). The level of collagen quantification observed in the ventricular myocardium of C. jacchus was similar to that seen in other nonhuman primates traditionally used in experimental models of cardiac diseases.