PSYC 211 Lecture Notes - Lecture 35: Ependymoma, Medulloblastoma, Astrocytoma

• School: McGill University
• Department: Psychology
• Course: PSYC 211
• Professor: Yogita Chaudasama

Document Summary

Tumors: a tumor is a uncontrollable growth of cells that serves no useful function, a benign tumor has a distinct border between the tumor cells and the surrounding tissue (i. e. it is encapsulated) If the tumors infiltrates the surrounding tissue, it is malignant (i. e. cancerous: malignant tumors give rise to a process of metastasis in which tumor cells can travel through vascular system and grow elsewhere in the body. Tumors in the brain: any tumor in the brain, benign or malignant is harmful. Tumors are damaging to the brain because: o the tumor occupies space and compresses the brain tissue o the tumor invades the surrounding tissue as it grows and destroys cells in its path. This meningioma (tumor of the cells of the meninges) has displaced the right side of the brain: the right ventricle is almost completely occluded.