Sectional view Figure 3-1 Anatomy and Physiology: From Science to Life 9 2006 John Wiley Sons
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opyright e The McGraw-Hill Companies, Ine. Permission roquirod for reproduction or display. Nucleus Nucleolus Plasma Rough endoplasmic reticulum Bound ribosome Free endoplasmic Microfilaments Microtubule Organelles have their own membranes
Organelles have their own membranes
Cell Membrane(plasma membrane) 细胞膜 Copyright 9 The McGraw-Hill Companies, Inc. Permission required for reproduct on or display. TABLE 3-1 Functions of Cell Membranes 1. Regulate the passage of substances into and out of cells and between cell organelles and cytosol 2. Detect chemical messengers arriving at the cell surface 3. Link adjacent cells together by membrane junctions 4. Anchor cells to the extracellular matrix
Cell Membrane (plasma membrane) 细胞膜
Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Extracellular fluid Carbohydrate→ Transmembrane Phospolipids portion of proteins glycoprotein Channel ntregral proteIns 28 Peripheral rotein Polar regions Nonpolar regions Intracellular fluid
Phospholipid bilayer