Question

the type of joint/range of movement and finally to determine how the bones, muscles and tendons work together to move about the joint. Materials: rubber tubing leg bones musculoskeletal model of the whole body tape Procedure: Examination of the KNEE and accompanying leg bones Carefully collect the three main bones of the knee. Lay the bones on the lab bench and place them in their proper positions to form a functional joint. Identify the following structures or where they would attach, and their role in joint function: Femur Tibia Fibula Patella (not all the leg sets will have this component but make sure you can identify it) Medial and lateral collateral ligaments Quadriceps tendon Patellar tendon Meniscus (pl. menisci) Carefully examine the joint: Which points are smooth? Which points are rough? Where do the bones touch each other? Where might the tendons and ligaments attach? Now carefully bend around the joint and examine how the relationship between these bones changes. In order for the bones to move around the joints, each joint needs a system of force- bearing structures. These structures are the striated muscles that pull in opposition on the bone and cause directional movement. Ligaments work against movement in favor of keeping the joint and surrounding bones stable. Simulate the movement of the knee joint using the models. Attach Queens College Biology 105-Laboratory Unit 10: Musculoskeletal/Blood

Answer 1

1. Femur: it is the though bone. It forms a part of the one joint along with the tibia. It is the longest bone and is also quite strong.
2. Tibia: it is the main weight bearing bone of the body and forms the knee joint.
3. Fibula: it is a thin, comparatively weaker bone on the lateral aspect of the leg. It provides site of attachment of many muscles.
4. Patella: it is a small, somewhat triangle shaped bone on the anterior aspect of the knee joint. It provides attachment to the thigh muscles and gives mobility to the knee joint.
5. MCL and LCL: these are ligaments which strengthen the knee from the vertical plane.
6. Quadriceps tendon: it attaches to the patella. The quadriceps are one of the strongest muscle groups and extensors of the knee joint
7. Patellar tendon: it holds the patella in place and provides stability
8. Menisci: these are cushion like structures on the tibial head which prevent knee joint erosion and give smoothness of movement
9. Smooth: anterior part of the joint
10. Rough: lateral parts of the joint
11. The distal aspect of femur touches proximal aspect of tibia
12. Tendons and ligaments attach on the long bones- femur and tibia