SYNOVIAL JOINTS Torie Shultz‚ Noelle Henniger‚ Chris Scanlon Synovial Joint Freely moveable (diarthroic) Most complex Consists of: Articular cartilage Joint capsule Synovial membrane which secrets synovial fluid Ligaments Bursae Menisci Articular Cartilage Hyaline cartilage covers the bones surface is known as articular cartilage Resists wear and minimizes friction Subchondral plate- bone beneath articular cartilage that contains elastic cancellous bone Absorbs shock‚ protects from stress by
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BY JACOB WOODS 12G Synovial Joints Synovial joints are characterised by a layer of synovial fluid surrounding the articulating surfaces. This helps to lubricate the cartilage therefore reducing the friction between the joints. The synovial capsule stores the fluid‚ meaning it can lubricate the joint quickly. There are 5 types of synovial joint. They are as follows. Ball and socket joint Spheroidal joints to give them their technical name are joints that include two articular surfaces; a ball
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Articulations or Joints • Articulation or Joint – Place where two bones (or bone and cartilage) come together – Can be freely movable‚ have limited‚ or no apparent movement – Structure correlated with movement • Naming Joints – According to bones or parts united at joint- temporomandibular – According to only one of articulating bones- humeral – By Latin equivalent of common name- cubital 8-2 Classes of Joints • Structural: based on major connective tissue type that binds
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1. A synovial membrane – secretes synovial fluid 2. Which is correctly paired – abduction – lifting the arm horizontally to form a right angle with the side of the body or moving a part away from the middle 3. Which of the following is not a synovial joint – symphysis 4. Types of fibrous joints inclue – syndesmosis‚ suture‚ and gomphosis joints 5. Joints are also called – articulations 6. The joint that separates two vertebrae is a – symphysis that is amphiarthrotic 7. Fluid-filled
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These joints all have something in common ─ they are called synovial joints‚ which means that they have a cavity in the joints that contains synovial fluid. Joints are not just made of bone‚ because if they were‚ friction would keep them from moving smoothly. The body uses cartilage and the synovial fluid to reduce friction in joints. Osteoarthritis happens when cartilage wears away over time and exposes bone to bone and increases friction‚ which is very painful. Synovial fluid is a fluid-like material
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Elbow Joint The elbow joint is a very complex hinge joint located between the distal end of the humerus in the upper region of the proximal ends of the ulna and radius. The elbow joint allows flexion and extension and rotation of the forearm and wrist. The range of motion of the elbow is limited due to the olecranon of the ulna so that elbow can only extend to 180 degrees. Like most synovial joints‚ a thin layer of articulating cartilage covers the ends of the bones to allow smooth movement.
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Where two bones meet or link‚ it is called a joint or an articulation. Joints can be classified according to their structure and by the types of movement they allow. The body has more than 300 different joints. In the body there are three types of joints... Moveable/Synovial joints – Moveable joints allow for maximum movement. Moveable or synovial joints are normally found in the limbs‚ as we use these parts more than anything. Ligaments help to provide the stability of the bones‚ also the muscles
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The Shoulder Joint.The Shoulder is an enarthrodial or ball-and-socket joint. The bones entering into its formation‚ are the large globular head of the humerus‚ received into the shallow glenoid cavity of the scapula‚ an arrangement which permits of very considerable movement‚ whilst the joint itself is protected against displacement by the strong ligaments and tendons which surround it‚ and above by an arched vault‚ formed by the under surface of the coracoid and acromion processes‚ and the coraco-acromial
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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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The Shoulder Joint The glenohumeral joint‚ or as it is more commonly referred to the shoulder joint ‚ is one of the most flexible and unstable joints in the body. As a ball and socket joint the shoulder allows circular motion and hinge movement. The rounded head or ‘ball’ of the humerus rests in the shallow dish shaped cavity or ‘socket’ created by the glenoid fossa of the scapula. This allows for a wide range of motion around several axes. There are two main bones that make up the shoulder
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