This lab session was completed to understand how muscles and tissues work together in our bodies to make everyday activities possible. Each pair of students observed three types of muscles (skeletal, smooth and cardiac) under the microscope. By looking at the muscle through the eyepiece, you drew what you saw in the field of view in the results section for later observation. After looking at the muscles, they took slides of bone and cartilage and also looked at them under a microscope. The bone slide used was a piece of ground bone while the cartilage used was elastic cartilage, fibrous cartilage and hyaline cartilage. Like the previous tissues, these have also been drawn and labeled in the results section to be later observed and understand how our bodies work together and help us do what we want to do.II- Introduction:So that vertebrates can be supported and move, some tissues are involved including muscles, bones and cartilage. When muscles contract they produce movement, and muscle movement radiates heat to help control body temperature; therefore, there are three different types of muscle tissue: cardiac, skeletal, and smooth. Cardiac muscle is the muscle found only in the heart; thus, the prefix word “cardio” means “heart” in Greek (Miller, Levine. (2006). Pearson Prentice Hall. Biology.). This muscle appears to be striated, meaning it has alternating light and dark bands (striations) that include red and white fibers and contain protein. These red fibers are rich in oxygen and can be classified as slow oxidative, meaning they are slow twitching. White fibers are in fact poor in oxygen and are fast glycolytic, which means they have a twi...... middle of paper ......http://www.mayoclinic.com/health/muscular-dystrophy /DS00200/DSECTION=symptoms4.) Nordqvist, C. (March 2011). Medical news today. What is achalasia?. Retrieved from: http://www.medicalnewstoday.com/articles/219314.php5.) Author not mentioned. (n.d.). WebMD. Heart valve disease. Retrieved from: http://www.webmd.com/heart-disease/guide/heart-valve-disease6.) Mayo Clinic Staff. (2013). Osteoporosis. Retrieved from: http://www.mayoclinic.com/health/osteoporosis/DS001287.) Mayo Clinic Staff. (2013). Osteoarthritis. Retrieved from: http://www.mayoclinic.com/health/osteoarthritis/DS000198.) Shiel, W. (2013). Medicine Network. Relapsing polychondritis. Retrieved from: http://www.medicinenet.com/relapsing_polychondritis/article.htm9.) Mayo Clinic Staff. (2013). Herniated disc. Retrieved from: http://www.mayoclinic.com/health/herniated-disk/DS00893