Objective To observe the anatomic structure of the right ventricle in cattle,in order to accumulate data for comparative anatomy.Methods Thirty-one hearts of cattle were fixed with formaldehyde solution(1.33 mol·L-1),then the structures of right ventricles were observed with gross anotomy method.Results The right ventricle of cattle heart was a cone and the average thickness of its wall was(10.53±1.70)mm.The average circumference of tricuspid was(145.84±27.22)mm.The average heights of anterior cusp,posterior cusp and septal cusp were(35.40±7.78),(30.18±6.64),(30.37±5.75)mm respectively,the average width were(45.42±11.73),(52.15±13.98),(63.17±15.10)mm respectively,and the average strata were 4.58±0.96,4.97±0.89 and 5.90±1.30 respectively.There were many and exiguous chordae tendineae.The average numbers of chordae tendineae form anterior papillary muscles to anterior cusp,posterior cusp and lateral were 4.03±1.30,3.81±1.56 and 1.48±0.81 respectively.The average numbers of chordae tendineae form posterior papillary muscles to anterior cusp,septal cusp and posteriomedialis were 4.16±1.55,4.48±1.67 and 1.58±0.67 respectively.The average numbers of chordae tendineae from septal papillary muscles to anterior cusp,septal cusp and anteriomedialis were 3.71±1.35,5.55±1.61 and 1.52±0.10 respectively.False tendons existed between papillary muscles and the wall of right ventricle or between the walls of right ventricle commonly and the frequency of false tendons was 100%,and the average number of false tendons was 30.19±10.90.Columna papillares appeared in group,and the average numbers of anterior papillary muscles,posterior papillary muscles and septal papillary muscles were 1.00±0.00,1.77±0.76 and 1.06±0.25 respectively.The average length of moderator band was(44.33±10.98) mm and the average diameter was(4.76±3.69)mm.The main structures of the right ventricular outflow were composed of pulmonary valve ring,pulmonary valve and sinus arteriae pulmonalis.The average circumference of pulmonary valve ring was(100.18±13.11)mm,the average height of left,right and anterior pulmonary valve were(13.75±2.75),(13.59±2.58) and(14.11±2.50)mm respectively,the average width of them were(34.99±7.02),(35.41±3.92) and(39.04±6.75)mm respectively.Conclusion The right ventricle of cattle is similar to that of human heart in structure,but there were differences in size and the total number of chordae tendineae and false tendon.

Objective To explore a new method to display the superficial lymphatic vessels of the cattle cardia.Methods The superficial lymphatic vessels were displayed by new type of lymphatic casting agent perfusion method and acid corrosion technology.Results The superficial lymphatic vessels could be seen with naked eyes after perfusion,and there were eighteen strips of integrity lymphatic stereo cast structure and lymphatic nodes after acid corrosion.Conclusion The new perfusion method can show the distribution of lymphatic vessels very well,and the specimen can be preserved for a long-term.