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Musculoskeletal A+P
ISSA Personal Training 9th Edition Unit 3
| Actin | Long, thin contractile filaments. |
| Action | the specific movement that each muscle is capable of and or responsible for. |
| Adenosine Triphosphate | An organic compound found in muscle, which, upon being broken down enzymatically, yields energy for muscle contraction. |
| Aerobic | Occuring with the use of oxygen, or requiring oxygen |
| All or None Reaction | Concept stating that a unit is either fully relaxed or contracted. never partially contracted. |
| Anaerobic | Occurring without the use of Oxygen |
| Anatomy | The science of the structure of the human body |
| Appendicular Skeleton | Bones consisting of th eloper and lower extremities, including the pelvic and shoulder girdles. |
| Axial Skeleton | Bones consisting oft skull, spine, ribs, and sternum |
| Ballistic Movements | Muscle contractions that exhibit maximum velocities and accelerations over a very short period of time. They exhibit high firing rates, high force production, and very brief contraction times. |
| Biochemistry | the branch of science concerned with the chemical and physicochemical process that occur within living organisms. |
| Capillarization | an increase in size and number of tiny blood vessels surrounding a cell. |
| Cartilage | a firm elastic flexible white material found at the ends of ribs, between vertebrae (discs) and joint surfaces, and in the nose and eats. |
| Collagen | Fibrous protein that forms tough connective tissue. |
| Concentric | a contraction in which a muscle lengthens and overcomes a resistance. |
| Creatine Phosphate | (CP)A high energy phosphate molecule that is stored in cells and can be used to immediately resynthesize ATP |
| Creatine | Organic acid generally found in the muscles as phosphocreatine that supplies energy for muscle contraction. |
| Eccentric | A contraction in which a muscle lengthens and is overcome by a resistance. |
| Elastin | elastic fibrous protein found in connective tissues. |
| Feedback loop | section of a control system that serves as a regulatory mechanism; return input as some of the output. |
| hypertrophy | An increase in cross-sectional size of a muscle in response to strength training. |
| Innervation | the specific distribution or supply of nerves to particular part of the body. |
| Insertion | the distal attachment, the insertion is generally considered the most movable part of the part that attaches farthest from the midline of the body. |
| Involuntary Muscle Tissues | Receive nerve fibers from the autonomic nervous system and count be voluntarily controlled, except in a few rare cases. |
| Isometric | a contraction in which the muscle develops tension but does not shorten |
| Isotonic | a contraction in which the muscle shortens bu retains constant tensions. |
| Lactic Acid | a byproduct of glucose and glycogen metabolism in anaerobic muscle energetics. |
| Ligament | the fibrous connective tussle that connects bone to bone or bone to cartilage to hold together and support joints. |
| Muscle Spindles | Sensory receptors within the belly of a muscle that primarily detect changes in the length of this muscle. Measures and delivers the quantity of muscle force needed to perform a given action. |
| Musculoskeletal System | Body system that consist of the bones, joints, connective tissues, and muscles. |
| Musculotendinous | or, relating to or affecting muscular and tendinous tissue. |
| Myofibrils | Tiny fibrils that make up a single muscle fiber. |
| Myofilaments | the elements of the muscle that actually shorten upon contraction; made up mainly of two types of protein: actin and myosin. |
| Myosin | Short, which contractile filaments. |
| Origin | Th proximal attachment, the origin is generally considered the lest movable part or the the part that attaches closest to the midline of the body. |
| Physiology | The science concerned with the normal vital processes of animal and vegetable organisms |
| Proprioceptor | Specialized sensory receptors located in tendons and muscles, sensitive to stretch, tension, pressure, and position of the body. Include, muscle spindles and Golgi Tendon Organ |
| Sarcoplasm | Jelly like intracellular fluid found in the muscle fiber. |
| Size Principle of Fiber Recruitment | Principle stating that muscle units are recruited in order of their recruitment thresholds and firing rates. |
| Skeletal System | System of the body consisting of bone and cartilage that supports and protects the body. |
| Sliding Filament Theory | Theory stating that myofibril contracts by the actin and myosin filaments living over each other. |
| Slow-twitch | (Type 1) Muscle fibers that help enable lower intensity higher endurance movements such as Running, Characterized by its slow speed of contraction and high speed of aerobic glycolysis |
| Synovial FLuid | a fluid that lubricates the smooth cartilage in joints. |
| Tendon | the fibrous connective tissue that connects muscle to bone. |
| Type I | Muscle fibers that helps enable lower intensity higher endurance movements such as running, characterized by its slow speed of contraction. Generates ATP predominately through the aerobic system of energy transfer |
| Type IIa | A fast-twitch fiber subdivision characterized by a fast shortening speed and well-developed capacity for energy transfer from aerobic and anaerobic sources. |
| Type IIx | A fast-twitch fiber subdivision characterized by the most rapid shortening velocity and greatest anaerobic potential. |
| Voluntary Muscle Tissues | Receive nerve fibers from the somatic nervous system that can be voluntarily controlled. |