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A & P Ch. 5

Agonist Role skeletal system plays in movement
Antagonist Role skeletal system plays in stopping movement
Aponeurosis Flat, sheetlike fibrous tissue that connects muscle or bone to other tissues
Concentric Contraction resulting in the shortening of a muscle
Contractility Ability to contract or shorten
Eccentric Contraction accompanied by the lengthening of a muscle
Endomysium Protective sheet of connective tissue around a skeletal muscle fiber
Epimysium Outermost sheath of a connective tissue that surrounds a skeletal muscle
Extensibility Ability to be stretched
Fascicle Bundle of muscle fibers
Irritability Ability to respond to a stimulus
Isometric Type of contraction that involves no change in muscle length
Muscle Fiber Individual skeletal muscle cell
Perimysium Connective tissue sheath that envelops each primary bundle if muscle fibers
Peristalsis Wave of symmetrical squeezing of the digestive tract walls that occurs during digestion
Sarcolemma Delicate membrane surrounding each muscle fiber
Abduction Away from body in frontal plane
Adduction Closer to body in frontal plane
Circumduction Rotational movement of a body segment
Dorsiflexion Top of foot towards lower leg
Eversion Sole of foot is rolled outwards
Extension Returns a body segment to anatomical position in the sagittal plane
Flexion Forward movement away from the sagittal plane
Hyperextension Backward movement away from the sagittal plane
Insertion Muscle attached to bone that tends to move when the muscle contracts
Inversion Sole of the foot is rolled inwards
Lateral rotation Outward movement in the transverse plane
Medial Rotation Inward movement in the transverse plane
Opposition Touching any fingers to your thumb
Origin Muscle attachment to a relatively fixed structure
Plantar Flexion Downward motion of the foot away from the lower leg
Pronation Medial rotation of the forearm
Radial deviation Rotation of hand towards the thumb
Supination Lateral rotation of the forearm
Ulnar Deviation Rotation of the hand toward the little finger
Contusion Bruising or bleeding within a muscle from impact
DOMS Muscle pain after a strenuous workout. Microscopic muscle tears
Hernia Muscles in the abdomen become weakened or tear
Muscle Cramps Moderate to severe muscle spasms causing pain
Muscle Strain An injury that occurs when a muscle is stretched beyond the limits to which it is accustomed
Muscular Dystrophy inherited disorders characterized by muscle weakness and loss of muscle tissue
Myositis Ossificans Condition in which a calcium mass forms within a muscle three to four weeks after a muscle injury
Shin Splint Pain localized to the anterior lower leg
Tendinitis Inflammation of a tendon, usually accompanied by pain and swelling
Tendinosis Degeneration of a tendon believed to be caused by micro tears in the tendon connective tissue.
Created by: Andrearoberts



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