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External rotation is the movement of a joint away from the center of the body, typically involving the rotation of a limb around its long axis. This motion is crucial in various physical activities and is essential for maintaining joint stability and range of motion.
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Joint mobility refers to the range of motion available at a joint, influenced by the joint structure, surrounding soft tissues, and neuromuscular control. Maintaining optimal Joint mobility is crucial for functional movement, preventing injuries, and enhancing overall physical performance.
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Range of motion (ROM) refers to the full movement potential of a joint, usually measured in degrees of a circle. It is crucial for assessing joint function, diagnosing injuries, and planning rehabilitation or exercise programs to improve flexibility and prevent injury.
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Rotational movement involves an object turning around an internal axis, characterized by angular displacement, velocity, and acceleration. It is fundamental in various physical systems, from planetary orbits to mechanical gears, and is governed by principles like torque and moment of inertia.
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Kinesiology is the scientific study of human movement, encompassing physiological, biomechanical, and psychological dynamic principles and mechanisms of movement. It is applied in various fields such as physical therapy, sports science, ergonomics, and rehabilitation to improve health, performance, and quality of life.
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The musculoSkeletal System is an organ system that enables humans to move using the muscular and Skeletal Systems, providing form, support, stability, and movement to the body. It consists of bones, muscles, cartilage, tendons, ligaments, and other connective tissues, working together to facilitate motion and maintain posture.
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Biomechanics is the study of the mechanical principles of living organisms, particularly their movement and structure. It integrates principles from physics and biology to understand how forces interact within a biological context, influencing the design of prosthetics, sports performance, and injury prevention.
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Functional anatomy focuses on understanding how anatomical structures are related to their functions and how these structures work together to enable movement and support physiological processes. It integrates knowledge from various disciplines to analyze how the body's form supports its function, providing insights crucial for fields like medicine, sports science, and rehabilitation.
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Proprioception is the body's ability to sense its position, movement, and action in space, allowing for coordinated and balanced movements without the need for visual cues. It is a crucial component of motor control and is mediated by sensory receptors located in muscles, tendons, and joints, which provide feedback to the brain about limb positioning and movement dynamics.
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Ligament stability refers to the ability of ligaments to maintain joint integrity and resist abnormal movements, ensuring proper joint function and preventing injuries. It is crucial for maintaining balance, coordination, and overall musculoskeletal health, particularly in activities requiring dynamic motion and load-bearing.
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Muscle activation refers to the process by which motor neurons stimulate muscle fibers to contract, resulting in movement or stabilization of the body. It is a critical component in understanding how exercises target specific muscles and how different levels of intensity and types of contraction can influence strength and endurance gains.
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The infraspinatus muscle is one of the four rotator cuff muscles located in the shoulder, primarily responsible for the external rotation of the humerus and stabilization of the shoulder joint. Its function is crucial in activities involving overhead movements and maintaining shoulder joint integrity, making it a common focus in injury prevention and rehabilitation programs.
Concept
The shoulder joint, or glenohumeral joint, is a ball-and-socket joint that allows for a wide range of motion, making it one of the most mobile and versatile joints in the human body. Its movement is facilitated by the coordinated action of muscles, tendons, and ligaments, which provide both mobility and stability.
Concept
The axillary nerve is a crucial peripheral nerve of the upper limb that innervates the deltoid and Teres Minor Muscles, facilitating shoulder abduction and external rotation. It also provides sensory innervation to the skin over the deltoid, making it essential for both motor and sensory functions in the shoulder region.
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Birth canal navigation refers to the process by which a fetus maneuvers through the mother's pelvis during childbirth, involving a series of rotations and adjustments to align with the birth canal's dimensions. This complex process is crucial for a successful vaginal delivery and is influenced by factors such as fetal positioning, maternal anatomy, and uterine contractions.
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The posterior deltoid is a muscle located at the back of the shoulder, playing a crucial role in shoulder extension, horizontal abduction, and external rotation. It is essential for stabilizing the shoulder joint and is often targeted in exercises to improve posture and upper body strength.
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Shoulder movement involves the complex interaction of muscles, tendons, and bones that allow for a wide range of motion, including flexion, extension, abduction, adduction, and rotation. Understanding Shoulder movement is crucial for diagnosing and treating injuries, improving athletic performance, and enhancing daily functional activities.
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Shoulder rotation refers to the movement of the shoulder joint, allowing the arm to move in a circular motion that is crucial for various activities and sports. Proper Shoulder rotation is essential for maintaining joint health, preventing injuries, and optimizing performance through balanced muscle engagement and flexibility.
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The infraspinatus is a thick triangular muscle located in the shoulder, part of the rotator cuff, and is primarily responsible for the external rotation of the arm. It plays a crucial role in stabilizing the shoulder joint, especially during arm movements that require precision and strength.
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The shoulder joint, or glenohumeral joint, is a highly mobile synovial ball-and-socket joint that allows for a wide range of movements including flexion, extension, abduction, adduction, internal rotation, and external rotation. Its mobility is facilitated by the shallow socket of the scapula and the flexibility of surrounding muscles and ligaments, but this also makes it susceptible to instability and injury.
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Shoulder range of motion refers to the degree of movement the shoulder joint can achieve in various directions, which is crucial for functional activities and overall shoulder health. Maintaining optimal Shoulder range of motion is essential for preventing injuries and ensuring effective rehabilitation following shoulder-related conditions or surgeries.
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Humerus movement refers to the various motions facilitated by the shoulder joint, allowing the arm to move in multiple directions such as flexion, extension, abduction, adduction, and rotation. These movements are crucial for a wide range of activities, from simple daily tasks to complex athletic maneuvers, and are supported by a network of muscles, tendons, and ligaments.
Concept
The hip joint is a ball-and-socket synovial joint formed by the articulation of the head of the femur and the acetabulum of the pelvis, allowing for a wide range of motion while providing stability and support to the body's weight. It is surrounded by strong ligaments, muscles, and a joint capsule, which contribute to its function and protection against dislocation and wear.
The lateral collateral ligament complex is a crucial structure in the knee that provides stability against varus forces and external rotation. It consists of several components, including the fibular collateral ligament, popliteus tendon, and popliteofibular ligament, which work together to maintain the integrity of the knee joint during movement.
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