Class Summary - Today students took the textbook quiz on 4.2 - connective tissue. We reviewed with a practice quiz of epithelial tissue. We then started to learn about connective tissue. We discussed the different types and where we found them on the body. There is loose connective tissue called areolar (containing both elastin and collagen along with fibroblasts) and adipose or fat tissue (large cells with little extracellular matrix). There is also dense tissue in both regular (fibers in the same direction) and irregular (fibers in random direction), and cartilage that has lacunae chambers in hyaline, elastic and fibrocartilage. Students should be able to identify from a slide the tissue and name locations of the tissue. We talked about two types of bone; spongy and compact. Compact bone is easy to identify because it has concentric circles. It is located in the outer portion of long bones. Spongy bone is located in the ends of long bones and is lighter than compact bone. We discussed muscle tissues. Blood is also a type of connective tissue suspended in plasma. It is composed of formed elements (red blood cells, white blood cells and platelets. Blood is formed in the red bone marrow. Blood's extra cellular matrix (plasma) is made not by the cells in the tissue but by surrounding organs. Next, I had students arrange a set of cards to organize the information about connective tissue (see arrangement on picture below). If there is enough time, we will do a connective tissue coloring sheet.
Homework - None (Connective Tissue Coloring)
Objectives - Students will be able to identify different connective tissue and name it's location.