![]() The structural classification of joints depends on the manner in which the bones connect to each other. Joints can be classified structurally or functionally. In the shoulder, it is common to develop rotator cuff tendinitis, which is a swelling of the tendons that support the rotator cuff.Chapter 1 - Nature and Processes of Scienceġ.1 Case Study: Why Should You Learn About Science?ġ.7 Pseudoscience and Other Misuses of Scienceġ.8 Case Study Conclusion: To Give a Shot or NotĢ.1 Case Study: Why Should You Study Human Biology?Ģ.6 Case Study Conclusion: Our Invisible InhabitantsĤ.14 Case Study Conclusion: More Than Just Tiredĥ.10 Mendel's Experiments and Laws of Inheritanceĥ.12 Sexual Reproduction, Meiosis, and Gametogenesisĥ.18 Case Study Conclusion: Cancer in the FamilyĦ.1 Case Study: Our Similarities and DifferencesĦ.4 Human Responses to Environmental StressĦ.9 Case Study Conclusion: Your Genes May Help You Save a Lifeħ.9 Case Study Conclusion: Under PressureĨ.1 Case Study: The Control Centre of Your Bodyġ0.1 Case Study: Skin, Hair, and Nails - Decorative but Functionalġ0.2 Introduction to the Integumentary Systemġ0.8 Case Study Conclusion: Wearing His Heart on His Sleeveġ1.8 Case Study Conclusion: A Pain in the Footġ2.7 Case Study Conclusion: Needing to Relaxġ3.1 Case Study: Respiratory System and Gas Exchangeġ3.2 Structure and Function of the Respiratory Systemġ3.7 Case Study Conclusion: Cough That Won't Quitġ4.1 Case Study: Your Body's Transportation Systemġ4.2 Introduction to the Cardiovascular Systemġ5.2 Introduction to the Digestive Systemġ5.7 Disorders of the Gastrointestinal Tractġ5.8 Case Study Conclusion: Please Don’t Pass the Breadġ6.5 Ureters, Urinary Bladder, and Urethraġ6.7 Case Study Conclusion: Drink and Flushġ7.7 Case Study Conclusion: Defending Your Defensesġ8.2 Introduction to the Reproductive Systemġ8.3 Structures of the Male Reproductive Systemġ8.4 Functions of the Male Reproductive Systemġ8.5 Disorders of the Male Reproductive Systemġ8.6 Structures of the Female Reproductive Systemġ8.7 Functions of the Female Reproductive Systemġ8.9 Disorders of the Female Reproductive Systemġ8.12 Case Study Conclusion: Trying to ConceiveĬhapter 1 Answers: Nature and Processes of ScienceĬhapter 2 Answers: Biology: The Study of LifeĬhapter 7 Answers: Introduction to the Human BodyĬhapter 14 Answers: Cardiovascular System Osteoarthritis is a common problem seen in the hip joints that occurs as the lubricating cartilage of the joint degenerates. Common ball and socket joints include the hips and shoulders. ![]() Since the rounded head can move freely within the cup, or socket, this allows for movement in all directions. There are six different types of synovial joints, including: Ball and Socket Jointsīall and socket joints are composed of one bone with a rounded head that fits into the cup of another bone. For this reason, we will be looking closely at the different types of synovial joints, where they are found in the body, and what problems or injuries commonly affect them. ![]() When it comes to joint problems and injuries, synovial joints are affected far more than fixed or cartilaginous joints. Synovial joints are the most common joint in the body and are the type of joint that most people are familiar with. Diarthroses (freely movable), also known as synovial joints, are defined as containing synovial fluid that allows for all parts of the joint to move against each other.An example of cartilaginous joints are the vertebrae. Amphiarthrosis (slightly movable joints), also known as cartilaginous joints, are defined as two or more bones held together so tightly that movement is limited.An example of immovable joints are the plates of the skull. Synarthroses (immovable joints), also known as fixed or fibrous joints, are defined as two or more bones in close proximity that have no movement.Joints in the human body are defined by their movement (or absence of movement). Did you know that there are between 250-350 joints in the human body? The reason why this is not an exact number is because the number of joints can vary with age, the number of sesamoids can vary, and the definition of joints can either be the point at which two bones connect or the point where bones connect for the purpose of movement.
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