Anatomy Assignment 1:Factors affecting joint stability. The stability of a joint is a measure of how difficult it is to cause disruption from its desired position
Kevin Grumley Anatomy Assignment 1: Factors affecting joint stability. The stability of a joint is a measure of how difficult it is to cause disruption from its desired position or alignment, another way to describe this is id a joint's resistance to displacement. The function of the joints is obviously to provide the bones with a means of moving or being moved. But because such provisions bring with them a threat of instability, the joints have a secondary function for providing stability without interfering with the desired motions. All the joints of the body do not have the same degree of strength or stability. Some such as the hip or elbow are fairly stable. Others such as the shoulder or knee are less stable and therefore more easily injured. The strength or degree of freedom follows Emerson's law: "For everything that is given, something is taken." In the shoulder, movement is gained at the expense of stability, while in the hip, movement is sacrificed for stability. Even as muscles pull on bones to cause movements, they stabilize and strengthen the joints of the skeleton. (Elaine N. Marieb (2005) Human Anatomy & Physiology 6th edition). The stability of a joint is dependant on a number of factors, the main ones listed below. Ligamentous Arrangement: The Arrangement of ligaments around the joint allows them to resist any motion that would tend to stretch
The Plague Maths Project
The Plague Maths Project I have been asked to investigate and find a formula, which shows patterns of disease. This disease is spreading every day inside this room. The person who is carrying the disease has a contagious disease which means it will spread throughout this room. There are three cases of this disease, which I have been asked to investigate. The disease can be passed only in straight lines (up, down. left, right). The disease spreads one square away from the already infected one. These diagrams below show how the disease is spreading. The 1st case The first case I have been asked to see is where one person is standing in the centre of the room. This person is infected. On day one this person is the only one infected but as the days go on it will spread in all directions. The 2nd case The second case I am investigating is when another person is standing up against one of the walls in the room. This means that the disease will spread differently then the 1st case. It also means that the disease can spread in three directions to start with. The 3rd case The 3rd case is where the contagious person is in the corner and the disease spreads out into the room. This time the disease can only spread in two ways to start with. Diagrams and Results: I have recorded the spreading plague for 6 days. Then I will make a prediction for day 7. These diagrams show the