NURS 1750 Chapter 3: Nursing 63-175 Chapter 3: A&P: The Cellular Level of Organization
16 Dec 2016
School
Department
Course
Professor
Document Summary
Cells cells carry out a multitude of functions that help each system contribute to the homeostasis of the entire body. At the same time, all cells share key structures and functions that support their intense activity. Plasma membrane forms cells flexible outer surface, separating the cells internal environment (everything inside the cell) from the external environment (everything outside the cell). It is a selective barrier that regulates the flow of materials into and out of a cell. This selectivity helps establish and maintain the appropriate environment for normal cellular activities. The plasma membrane also plays a key role in communication among cells and between cells and their external environment. Cytoplasm consist of all the cellular contents between the plasma membrane and the nucleus. This compartment has two components: cytosol and organelles. Cytosol, the fluid portion of cytoplasm, also called intracellular fluid, contains water, dissolved solutes and suspended particles. Within the cytosol are several different types of organelles.
