Which<br/>is wrong about the structure of testis? () A: Thetunica<br/>albuginea is thickened on the posterior<br/>surface of<br/>testis to form mediastinum B: The<br/>fibrous septa from mediastinum<br/>penetrates radially the testis, dividing it into pyramidal lobules C: Each<br/>lobule is occupied by 1-4 seminiferous tubules D: Theseminiferous<br/>tubules go into mediastinum testis to form rete testis E: The tubulus<br/>rectus go into mediastinum testis to form rete testis

Which of the statements on invasive thymoma is incorrect? A: Multiple metastases are likely to happen in the lung. B: CT manifests as an irregular mass with unclear edges. C: The main sign of mediastinal invasion is the disappearance of fat space. D: It can grow along the pleura to the posterior mediastinum and pericardium on the same side. E: It can grow along the pleura to the posterior mediastinum and pericardium on the same side.

The function of the testis is to produce sperm and male hormones, the following structure which produces sperm is ( ). A: Tubulus rectus B: Interstitial cell C: Convoluted seminiferous tubule D: Mediastinum testis

Which of the statements on invasive thymoma is incorrect? A: Multiple metastases are likely to happen in the lung B: CT manifests as an irregular mass with unclear edges C: The main sign of mediastinal invasion is the disappearance of fat space D: It can grow along the pleura to the posterior mediastinum and pericardium on the same side E: It can enter the abdominal cavity through the aortic orfice and diaphragmatic aperture