AFAA-GFI Certification EXAM 2023 WITH 100% CORRECT ANSWERS

kinetic chain interrelation of nervous, muscular & skeletal systems central nervous system includes brain & spinal cord, coordinates activity of body parts peripheral nervous system includes all nerves branching from spinal cord, extending out to the body mechanoreceptors sense distortion in body tissues Golgi tendon organs sensitive to changes in tension muscle spindles sensitive to changes in length proprioception cumulative sensory input to the CNS from all mechanoreceptors tendons connect muscle to bone ligaments connect bone to bone sarcomeres individual contractile units; actin & myosin filaments type I muscle tissue slow twitch, more aerobic, resistant to fatigue type II muscle tissue fast twitch, more anaerobic, produce more speed & strength; faster to fatigue behavioral properties of muscle extensibility, elasticity, irritability, ability to develop tension what is the isolated function (concentric action) of the quadriceps knee extension; ex. upward phase of a squat what is the isolated function (concentric action) of the hamstrings knee flexion; ex. hamstring curl what is the isolated function (concentric action) of the gastrocnemius plantar flexion; ex. calf raise what is the isolated function (concentric action) of the gluteus maximus hip extension & external rotation; ex. upward phase of lunge what is the isolated function (concentric action) of the rectus abdominus spinal flexion, lateral flexion & rotation; ex. ball crunch what is the isolated function (concentric action) of the pectoralis major shoulder flexion & horizontal adduction; ex. push up what is the isolated function (concentric action) of the latissimus dorsi shoulder extension, adduction & internal rotation; ex. band row what is the isolated function (concentric action) of the biceps elbow flexion; ex. bicep curl what is the isolated function (concentric action) of the triceps elbow extension; ex. triceps extension axial skeleton skull, rib cage & vertebral column appendicular skeleton bones of the upper & lower extremities