such as methane‚ however‚ have weak cohesion due only to Van der Waals forces that operate by induced polarity in non-polar molecules. Cohesion‚ along with adhesion (attraction between unlike molecules)‚ helps explain phenomena such as meniscus‚ surface tension and capillary action. Mercury in a glass flask is a good example of the effects of the ratio between cohesive and adhesive forces. Because of its high cohesion and low adhesion to the glass‚ mercury does not spread out to cover the bottom
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Pivot joint: A rounded portion of a bone is enclosed within a ring formed partially by the articulation with another bone and partially by a ligament . The bone rotates within this ring. Since the rotation is around a single axis‚ pivot joints are functionally classified as a uniaxial diarthrosis type of joint. An example of a pivot joint is the atlantoaxial joint‚ found between the C1 (atlas) and C2 (axis) vertebrae. Here‚ the upward projecting dens of the axis articulates with the inner aspect
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BALL-AND-SOCKET JOINT 1 The Ball-and-Socket Joint HCS/230 January 10‚ 2011 Dr. Mike Liang THE BALL-AND-SOCKET JOINT 2 The Ball-and-Socket Joint Joints are essential in allowing movement of the human body. They are located at the intersection of bones‚ and their structures determine the type of movement that will occur at that location. Each joint contains components
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Introduction The knee is one of the largest and most complex joints in the body. The knee joins the femur to the tibia. The smaller bone that runs alongside the tibia is the fibula. The patella‚ also known as the knee-cap‚ is another one that makes up the knee joint. I decided to discuss this joint structure because of reoccurring knee injuries. The Knee Joint The knee joint is formed by the articulation of the distal end of the femur and the proximal end of the tibia. The fibula
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Wood joints There are many wood joints available to make‚ joints are used to build strength into products. The joints below are the joints that are commonly used in schools. Note only glue is used to join these joints together. 1. Butt joint A very simple joint but it is also very weak. They tend to be used for making picture frames‚ corner pieces and nails are often used to strengthen the joint. 2. Mitre joint Finger joints More about finger joints from the technology student website. View
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If one didn’t have the ability to joint two pieces of wood together in a solid fashion‚ all woodworking pieces would be sculptures‚ carved out of a single piece of wood. However‚ with the many varied types of wood joinery‚ a woodworker has a number of different joints in his arsenal from which to choose‚ based upon the project. If you master these wood joinery concepts‚ you’ll be well on your way to becoming a very accomplished woodworker. 1. Basic Butt Joint (c) 2009 Chris Baylor licensed to
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PH WANTS ACCESS TO SABAH STANDOFF VICTIMS MANILA‚ Philippines - Philippine diplomats have been sent to Sabah to assist Filipinos affected by thedeadly standoff between Malaysian police and supporters of the Sulu Sultanate‚ the Department of Foreign Affairs (DFA) said on Sunday‚ March 3. “We would like to see how we could work with local authorities in further assisting our nationals affected by the situation‚” DFA Undersecretary for Special and Ocean Concerns Jose Brillantes explained in a statement
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Joints and Movements The Joints Definition: A joint (articulation) is point of contact between bones or between bone and cartilage. Joint Classifications Joints are classified by: The degree of movement they allow The structure of the joint The three types of joints that we will look at are: 1. Fibrous joints 2. Cartilaginous joints 3. Synovial joints Fibrous Joints These joints are also called "fixed" or "immoveable" joints‚ because they do not move. These joints have no joint cavity
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Introduction Joints are the connections between bones‚ they are what support you and provide you with the ability to move. However when these joints get damaged due to injury or decease the movement of the body in that particular area becomes hampered‚ causing pain ranging from mild irritation to debilitation. (Zelman‚ 2017) This pain is referred to as Joint Pain and has been plaguing human civilisations from as early as our hominid ancestors (Sarah Knapton‚ 2016). Why Do People Suffer From It? There
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be explaining the functions of the different components and types of synovial joints and explain the structure and function of cartilaginous and fixed joints. Most of the joints are synovial and contain synovial fluid which is a lubricating liquid. These are found in the limbs where mobility is important. A synovial joint is also known as a Diarthrosis which are freely movable joints. These types of synovial joints are the largest group with the greatest variations and can be found in the shoulder
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