RNSG 1538 - Exam 4 Cell Reg & Grief.

CELLURAL REGULATION (30) Cellular Regulation is the process by which cells replicate, proliferate, and grow.  Refers to all functions carried out within the cells to maintain homeostasis, including their responses to extracellular signals (e.g., hormones, neurotransmitters) and the way each cell produces an intracellular response. Included within these functions is cellular replication and growth Proliferation: production of new cells through cell division Differentiation: acquisition of specific cell function Neoplasm /tumor: new and abnormal tissue growth that is uncontrolled and progressive  Benign → does not invade surrounding tissue or spread to other parts of the body; not cancer.  Malignant→ cancerous tumor cells Exemplars Solid Tumors (5): → NO LIQUID Abnormal (localized) mass of tissue that does not contain cysts or liquids  May be benign (non-cancerous) or malignant ( cancerous) Types of tumors:  Sarcoma → Begin in the connective tissue; the tissue that the body uses to connect or support other tissues  Carcinoma → originate from the epithelial tissues; this tissue that lines your organs ( lungs, liver, breast , colon or prostate)