Muscular system Flashcards
To teach about muscular system (30 cards)
Responsible for body movement like walking and running
Skeletal muscles
Thoracic muscles assist in breathing process
Respiration
Constrict organs to propel food and regulate blood flow
Smooth muscles
Responsible for heart contractions and blood circulations
Cardiac muscle
Muscles ability to shorten forcibly.
Contractility
Muscles can receive and respond to stimuli
Excitability
Muscles can be stretched or extended.
Extensibility
Muscles can recoil to original length.
Elasticity
Connective tissue sheets between muscles and skin.
Fascia
Cells that develop into skeletal muscle fibers.
Myoblasts
Bundles of protein filaments in muscle fibers.
Myofibrils
Functional units of skeletal muscles for contraction.
Sarcomeres
Time gap before muscle contraction begins.
Lag Phase
Muscle does not change length during contraction.
Isometric Contraction
Muscle changes length while maintaining tension.
Isotonic Contraction
Temporary reduced work capacity of muscles
Muscle Fatigue
Fixed end of a muscle, proximal attachment.
Origin
Mobile end of a muscle, distal attachment.
Insertion
Middle part of a muscle between origin and insertion
Belly
Connective tissue attaching muscle to bone.
Tendons
Muscles stabilizing the prime mover during action.
Fixators
Muscle group extending and stabilizing the spine
Erector Spinae
Flexes and extends the shoulder joint.
Pectoralis major
Shoulder muscle with three fiber types.
Deltoid
