人心横断面解剖 3D模型

- Modeled and Textured in SolidWorks. The model contains the most popular formats: 1. SolidWorks: *.sldprt *.slddrw *.sldasm (NATIVE) 2. Autodesk Inventor *.ipt *.iam *.ipn *.idw *.dwg 3. 3DS MAX: *.max 4. Rhinoceros: *.3dm 5. SketchUp: *.skp 6. Blender: *.blend 7. AutoCAD: *.dwg 8. Collada file type: *.dae 9. Stereolithography: *.stl 10. Lightwave: *.lwo 11. ACIS: *.sat (NURBS) 12. IGES: *.iges *.igs (NURBS) 13. STEP: *.step *.stp (NURBS) 14. 3DS MAX all ver.: *.3ds (Multi Format) 15. Wavefront OBJ: *.obj *.mtl (Multi Format) 16. FBX: *.fbx (Multi Format) - Each file was checked for opening and full content by the model. - The 3D model was created on real base. Its created accurately, in real units of measurement, qualitatively and maximally close to the original. - Renders Are made in Luxion Keyshot - WE PROVIDE 3D MODEL CHEAP PRICE BUT WITH GOOD QUALITY - If you need any other formats we are more than happy to make them for you. Contact me for any question :) Sincerely Your, SURF3D MORE INFORMATION ABOUT 3D MODELS : The heart is a muscular organ in most animals, which pumps blood through the blood vessels of the circulatory system.[1] Blood provides the body with oxygen and nutrients, as well as assisting in the removal of metabolic wastes.[2] In humans, the heart is located between the lungs, in the middle compartment of the chest.[3] In humans, other mammals, and birds, the heart is divided into four chambers: upper left and right atria and lower left and right ventricles.[4][5] Commonly the right atrium and ventricle are referred together as the right heart and their left counterparts as the left heart.[6] Fish, in contrast, have two chambers, an atrium and a ventricle, while reptiles have three chambers.[5] In a healthy heart blood flows one way through the heart due to heart valves, which prevent backflow.[3] The heart is enclosed in a protective sac, the pericardium, which also contains a small amount of fluid. The wall of the heart is made up of three layers: epicardium, myocardium, and endocardium.[7] The heart pumps blood with a rhythm determined by a group of pacemaking cells in the sinoatrial node. These generate a current that causes contraction of the heart, traveling through the atrioventricular node and along the conduction system of the heart. The heart receives blood low in oxygen from the systemic circulation, which enters the right atrium from the superior and inferior venae cavae and passes to the right ventricle. From here it is pumped into the pulmonary circulation, through the lungs where it receives oxygen and gives off carbon dioxide. Oxygenated blood then returns to the left atrium, passes through the left ventricle and is pumped out through the aorta to the systemic circulationwhere the oxygen is used and metabolized to carbon dioxide.[8] The heart beats at a resting rate close to 72 beats per minute.[9] Exercise temporarily increases the rate, but lowers resting heart rate in the long term, and is good for heart health.[10]