CH.5 HUMAN MOVEMENT SCIENCE PT.2 Flashcards
RESTING LENGTH OF MUSCLE AND THE TENSION THE MUSCLE CAN PRODUCE AT THIS RESTING LENGTH
LENGTH TENSION RELATIONSHIP
FORCE IS CHARACTERIZED BY WHAT ?
MAGNITUDE (HOW MUCH) AND DIRECTION (WHICH WAY THEY ARE MOVING)
LENGTHENING MUSCLE BEYOND OPTIMAL LENGTH AND THEN STIMULATING IT REDUCES WHAT ?
AMOUNT OF ACTIN AND MYOSIN OVERLAP, REDUCING FORCE PRODUCTION
SHORTENING A MUSCLE TO MUCH AND THEN STIMULATING IT DOES WHAT TO ACTIN AND MYOSIN ?
PLACES ACTIN AND MYOSIN IN STATE OF MAXIMAL OVERLAP AND ALLOWS FOR NO FURTHER MOVEMENT TO OCCUR B/W FILAMENTS, REDUCING ITS FORCE OUTPUT
IF MUSCLE LENGTHS ARE ALTERED (I.E. MISALIGNED JOINTS OR POOR POSTURE) THEN THEY WILL NOT GENERATE WHAT ?
THE NEEDED FORCE TO ALLOW FOR EFFICIENT MOVEMENT
REFERS TO RELATIONSHIP OF MUSCLES ABILITY TO PRODUCE TENSION AT DIFFERING SHORTENING VELOCITIES
FORCE VELOCITY CURVES
AS VELOCITY OF CONCENTRIC MUSCLE ACTION INCREASES , ABILITY TO PRODUCE WHAT DECREASES ?
FORCE
WITH ECCENTRIC MUSCLE ACTION, AS VELOCITY OF MUSCLE ACTION INCREASES, ABILITY TO TO DEVELOP FORCE DOES WHAT ?
INCREASES
MUSCLE GROUPS MOVING TOGETHER TO PRODUCE MOVEMENT AROUND A JOINT
FORCE COUPLE
MUSCLES PRODUCE FORCE THAT IS TRANSMITTED TO BONES THOUGH WHAT ?
THROUGH THEIR CONNECTIVE TISSUES (TENDONS)
SYNERGISTIC ACTION OF MUSCLES TO PRODUCE MOVEMENT AROUND A JOINT; PROVIDE DIVERGENT PULLS ON BONES OR BONES THEY CONNECT WITH
FORCE COUPLE
T OR F: EVERY MOVEMENT PRODUCED MUST INVOLVE ALL MUSCLE ACTIONS (ECCENTRIC, ISOMETRIC, CONCENTRIC) AND ALL FUNCTIONS (AGONISTS, SYNERGISTS, STABILIZERS AND ANTAGONISTS) TO ENSURE PROPER PROPER JOINT MOTION AS WELL TO ELIMINATE UNWANTED OR UNNECESSARY MOTION.
TRUE
TO ENSURE HMS MOVES PROPERLY, MUST EXHIBIT PROPER FORCE COUPLE RELATIONSHIPS, WHICH CAN ONLY HAPPEN IF MUSCLES AND JOINTS ARE WHAT ?
MUSCLES ARE AT RIGHT LENGTH TENSION RELATIONSHIP AND JOINTS HAVE PROPER ANTHROKINEMATICS (JOINT MOTION)
TRUNK ROTATION USED MUSCLES
INTERNAL AND EXTERNAL OBLIQUES
UPWARD ROTATION OF SCAPULA USED MUSCLES
UPPER TRAPEZIUS AND LOWER PORTION OF SERRATUS ANTERIOR
USED MUSCLES TO PRODUCE HIP AND KNEE EXTENSION DURING WALKING, RUNNING, STAIR CLIMBING, ETC
GLUTEUS MAXIMUS, QUADRICEPS AND CALF MUSCLES
USED MUSCLES WHEN PERFORMING PLANTARFLEXION AT FOOT AND ANKLE COMPLEX
GASTROCNEMIUS, PERONEUS LONGUS, TIBIALIS POSTERIOR
USED MUSCLES WHEN PERFORMING SHOULDER ABDUCTION
DELTOID AND ROTATOR CUFF
AMOUNT OF FORCE THAT HMS CAN PRODUCE IS NOT ONLY DEPENDENT ON MOTOR UNIT RECRUITMENT AND MUSCLE SIZE BUT ALSO ON WHAT ?
LEVER SYSTEM OF JOINT
ATTACHED TO BONE BY TENDONS AND PRODUCE MOVEMENT BY BENDING AT MOVABLE JOINTS
SKELETAL MUSCLES
CAUSED BY MUSCLES PULLING ON BONES; MUSCLES CANNOT ACTIVELY PUSH
JOINT MOTION
PARTICULAR ATTACHMENTS OF MUSCLES TO BONES WILL DETERMINE WHAT ?
HOW MUCH FORCE MUSCLE IS CAPABLE OF GENERATING
IN HUMAN BODY THE FULCRUM IS WHAT ?
JOINT AXIS
IN HUMAN BODY WHAT ARE THE LEVERS ?
BONES
IN HUMAN BODY WHAT CREATES THE MOTION (EFFORT) ?
MUSCLES
IN HUMAN BODY, WHAT CREATES THE RESISTANCE ?
WEIGHT OF BODY PART OR WEIGHT OF AN OBJECT
LEVERS ARE CLASSIFIED FIRST, SECOND, AND THIRD CLASS DEPENDING ON WHAT ?
ON RELATIONS AMONG FULCRUM, THE EFFORT, AND THE RESISTANCE