How does the extra cellular matrix of connective tissues contribute to its function?

Pre-Lab Questions

”1. How do banding patterns change when a muscle contracts?”

”2. What is the difference between a muscle organ, a muscle fiber, myofibril and a myofilament? ”3. Outline the molecular mechanism for skeletal muscle contraction. At what point is ATP used and why? ”

”4. Explain why rigor mortis occurs. ”

Experiment 1: Tendons and Ligaments

Post-Lab Questions

”1. Label the arrows in the slide images below based on your observations from the experiment. ”

A- chondrocytes

B- collagen
C- nucleus

D-skeletal muscle fibers
E- nuclei

F- collagen fibers

 

 

 

”2. How does the extra cellular matrix of connective tissues contribute to its function? ”

”3. Why are tendons and ligament tissues difficult to heal? ”

”4. What difference do you see between the tendon – muscle insertion image and the tendon image? ”

”5. What differences do you see between the tendon and ligament sections? ”