Microscopes and Telescopes
Unless otherwise stated, the lens-to-retina distance is 2.00 cm.
Copy and trace to find how a horizontal ray from S comes out after the lens. Use \(n_{\text {glass }}=1.5\) for the prism material.
Text Transcription:
n_glass=1.5
Lecture 6 objectives 1. Define the term tissue and list the 4 tissue types in the body Tissues are the collection of specialized cells and cell products organized to perform one or more select functions. Four tissue types: Epithelial, connective, nervous, muscular. 2. Explain the different kinds of cell-cell junctions and what advantages each provides to a group of cells Tight junctions- interlocking proteins on the plasma membranes fused cells together preventing molecules from passing through the intercellular space. Separates compartments by sheets of semi permeable tissue; regulates permeability between two compartments. A bsorption transport of material toward the bloodstream. S ecretion transport of material away from the blood stream. Desmosomes- Anchoring/linker proteins extend across extracellular space and attach to each other. Holds/anchors cells together Gap junction- Membrane proteins from pore between cells allowing a continuous flow of cytoplasm and ions from one cell to another *important in electrical signaling and organs where cells work in close synchrony*. Functional syncytium
