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NASM-CPT (7TH EDITION) CHAPTER 5 STUDY GUIDE
Typology: Exams
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Human Movement System (HMS) - ANSWER The collective components and structures that work together to move the body: muscular, skeletal, and nervous systems. Kinetic Chain - ANSWER A concept that describes the human body as a chain of interdependent links that work together to perform movement. Nervous System - ANSWER A network of specialized cells called neurons that transmit and coordinate signals, providing a communication network within the human body. Neuron - ANSWER Specialized cell that is the functional unit of the nervous system. Nucleus - ANSWER Cellular structure or organelle that contains the majority of the cell's genetic material in the form of chromosomes. Organelles - ANSWER Tiny cellular structures that perform specific functions within a cell. Examples include nuclei, mitochondria, lysosomes, ribosomes, and the endoplasmic reticulum. Mitochondria - ANSWER The parts of the cell that use nutrients to create energy for the cell; commonly known as the powerhouses of the cell. Effector Sites - ANSWER A part of the body, such as a muscle or organ, that receives a signal from a neuron to produce a physiological response. Electrolytes - ANSWER Minerals that have an electrical charge to help transmit nerve impulses throughout the body, such as sodium, potassium, and magnesium. Central Nervous System (CNS) - ANSWER A division of the nervous system that includes the brain and spinal cord. Peripheral Nervous System (PNS) - ANSWER Nerves that connect the rest of the body to the central nervous system. Afferent Pathway - ANSWER Sensory pathway that relays information to the central nervous system. Efferent Pathway - ANSWER A motor pathway that relays information from the central nervous system to the rest of the body.
Interneurons - ANSWER Neurons located within the spinal cord and brain that transmit impulses between afferent and efferent neurons. Mechanoreceptors - ANSWER Specialized structures that respond to mechanical forces (touch and pressure) within tissues and then transmit signals through sensory nerves. Somatic Nervous System - ANSWER Nerves that serve the outer areas of the body and skeletal muscle and are largely responsible for the voluntary control of movement. Autonomic Nervous System - ANSWER A division of the peripheral nervous system that supplies neural input to organs that run the involuntary processes of the body (e.g., circulating blood, digesting food, producing hormones). Sympathetic Nervous System - ANSWER Subdivision of the autonomic nervous system that works to increase neural activity and put the body in a heightened state. Parasympathetic Nervous System - ANSWER Subdivision of the autonomic nervous system that works to decrease neural activity and put the body in a more relaxed state. Sensory Function - ANSWER Ability of the nervous system to sense changes in either the internal or external environment. Proprioception - ANSWER The body's ability to naturally sense its general orientation and relative position of its parts. Integrative Function - ANSWER The ability of the nervous system to analyze and interpret the sensory information to allow for proper decision-making, which produces an appropriate response. Motor Function - ANSWER The neuromuscular (or nervous and muscular systems) response to the integrated sensory information. Muscle Spindles - ANSWER Sensory receptors sensitive to change in length of the muscle and the rate of that change. Stretch Flex - ANSWER Neurological signal from the muscle spindle that causes a muscle to contract to prevent excessive lengthening. Golgi Tendon Organ (GTO) - ANSWER A specialized sensory receptor located at the point where skeletal muscle fibers insert into the tendons of skeletal muscle; sensitive to changes in muscular tension and rate of tension change. Joint Receptors - ANSWER Receptors located in and around the joint capsule that respond to pressure, acceleration, and deceleration of the joint.
Trochanter - ANSWER Two massive processes unique to the femur Vertebral Column - ANSWER Bones that house the spinal cord; consists of the cervical, thoracic, and lumbosacral regions. Spinal Cord - ANSWER Bundle of nerves housed within the vertebrae. Cervical Spine - ANSWER - C1-C
Condyloid Joint - ANSWER Due to the shape (condyle of one bone fits into the elliptical cavity of another bone to form the joint), movement predominantly occurs in one direction with minimal movement in others. Hinge Joint - ANSWER Uniaxial joint allowing movement predominantly in one direction. Nonsynovial Joints - ANSWER Joints that have no joint capsule, fibrous connective tissue, or cartilage in the uniting structure. Ligament - ANSWER A fibrous connective tissue that connects bone to bone. Collagen - ANSWER A protein found in connective tissue, muscles, and skin that provides strength and structure. It is the most abundant protein in the human body. Elastin - ANSWER A protein that provides elasticity to skin, tendons, ligaments, and other structures. Growth Plate - ANSWER A specialized cartilage disc located in the epiphysis that is responsible for longitudinal bone growth. The three types of muscle tissue are - ANSWER skeletal, cardiac, smooth Skeletal Muscle - ANSWER The type of muscle tissue that connects to bones and generates the forces that create movement. Fascia - ANSWER Connective tissue that surrounds muscles and bones. Epimysium - ANSWER Inner layer of fascia that directly surrounds an entire muscle, commonly referred to as the "deep fascia." Fascicles - ANSWER Largest bundles of fibers within a muscle. Fascicles are surrounded by perimysium. Perimysium - ANSWER Connective tissue surrounding a muscle fascicle. Endomysium - ANSWER Connective tissue that wraps around individual muscle fibers within a fascicle. Glycogen - ANSWER Glucose that is deposited and stored in bodily tissues, such as the liver and muscle cells; the storage form of carbohydrate. Myoglobin - ANSWER Protein-based molecule that carries oxygen molecules into the muscles. Myofibrils - ANSWER The contractile components of a muscle cell; the myofilaments (actin and myosin) are contained within a myofibril.
Excitation Contraction Coupling - ANSWER The physiological process of converting an electrical stimulus to a muscle contraction. Power Stroke - ANSWER The myosin heads bind to actin and pull them toward the sarcomere center, which slides the filaments past each other, shortening the muscle. Adenosine Triphosphate (ATP) - ANSWER A high-energy molecule that serves as the main form of energy in the human body; known as the energy currency of the body. Resting Length - ANSWER The length of a muscle when it is not actively contracting or being stretched. Type 1 Muscle Fibers (Slow Twitch) - ANSWER Muscle fibers that are small in size, generate lower amounts of force, and are more resistant to fatigue. Type 2 Muscle Fibers (Fast Twitch) - ANSWER Muscle fibers that are larger in size, generate higher amounts of force, and are faster to fatigue. All Or Nothing Principle - ANSWER Motor units cannot vary the amount of force they generate; they either contract maximally or not at all. Capillaries - ANSWER The smallest blood vessels and the site of exchange of elements between the blood and the tissues. Troponin - ANSWER Located on the actin filament and plays a role in muscle contraction by providing binding sites for both calcium and tropomyosin when a muscle needs to contract. Tropomyosin - ANSWER Located on the actin filament and blocks myosin-binding sites located on the actin filament, keeping myosin from attaching to to actin when the muscle is in a relaxed state.