University:
Boston University
Course:
CAS BI 203 | Cell Biology
Academic year:

2023
Views:

429

Pages:

4
Author:

ilikemyicons0y5

Chapter 3 The cells, tissues and organization of the body Learning Outcomes: ¤Part I: Cells and Tissues • Describe the structure and function of epithelial, connective, muscular and nervous tissue. ¤Part II: Organization of the body • Define common anatomical terms • Identify the principal bones of the axial skeleton and the appendicular skeleton. • State the boundaries of the four body cavities and list the contents of each cavity. • Compare between benign and malignant tumors. I. Cells and tissues The simple cell Cell structure: 1. Cell membrane (plasma membrane): • Phospholipid bilayer • Selectively permeable • Scattered protein molecules are either surface proteins or wholly embedded in the phospholipid bilayer. • Functions of membrane proteins: a. Channels (carriers) involved in the passage of molecules through the membrane. b. Enzymes that catalyze reactions. c. Receptors for hormones and other chemical messengers. d. Branched carbohydrate molecules attached to the outside of some membrane protein molecules give the cell its immunological identity.