Skeletal and Muscular Systems Movement and Support in Animals.
Muscular System. Functions of the muscular system Voluntary movement Involuntary movement Protection...
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Transcript of Muscular System. Functions of the muscular system Voluntary movement Involuntary movement Protection...
Functions of the muscular systemFunctions of the muscular system
Voluntary movementVoluntary movement
Involuntary movementInvoluntary movement
Protection of internal organsProtection of internal organs
Three types of muscle tissueThree types of muscle tissue
Skeletal muscle tissue is attached to Skeletal muscle tissue is attached to bones and causes movements of the bones and causes movements of the body. body.
Also called Also called striated musclestriated muscle or or voluntary musclevoluntary muscle
Three types of muscle tissueThree types of muscle tissue
Cardiac muscle is responsible for the Cardiac muscle is responsible for the rhythmic contractions of the heart.rhythmic contractions of the heart.
Cardiac muscle is involuntary = it Cardiac muscle is involuntary = it generates its own stimuli to initiate generates its own stimuli to initiate muscle contraction.muscle contraction.
Three types of muscle tissueThree types of muscle tissue
Smooth muscle lines the walls of Smooth muscle lines the walls of hollow organs. (ie: blood vessels and hollow organs. (ie: blood vessels and the digestive tract)the digestive tract)
Smooth muscle contraction is Smooth muscle contraction is relatively slow and involuntaryrelatively slow and involuntary
Structure of the Skeletal MuscleStructure of the Skeletal Muscle
FasciaFasciaCovering of Covering of musclemuscle
Become tendons Become tendons (only in skeletal (only in skeletal muscle)muscle)
Structure of the Skeletal MuscleStructure of the Skeletal Muscle
MyofibrilsMyofibrilsMuscle fibersMuscle fibers
ContractionContraction
In all muscle In all muscle typestypes
Structure of the muscleStructure of the muscle
Two key filaments that make up Two key filaments that make up myofibrilsmyofibrils
1. Actin is a thin filament involved in 1. Actin is a thin filament involved in contraction.contraction.
2. Myosin is a thick filament involved 2. Myosin is a thick filament involved in contractionin contraction
Oxygen DebtOxygen Debt
Oxygen debt is defined as the extra Oxygen debt is defined as the extra amount of oxygen that must be amount of oxygen that must be taken in by the body for cellular taken in by the body for cellular processes, and it represents the processes, and it represents the difference between the amount of difference between the amount of oxygen needed for totally aerobic oxygen needed for totally aerobic muscle activity and the amount muscle activity and the amount actually used.actually used.
Muscular system vocabularyMuscular system vocabularyPeristalsisPeristalsis
MyopathyMyopathy
RICE (acronym)RICE (acronym)
Muscle toneMuscle tone
Isotonic Isotonic contractionscontractions
Isometric Isometric contractionscontractions
ATPATP
Anaerobic Anaerobic glycolysis glycolysis (anaerobic (anaerobic respiration)respiration)
Aerobic respirationAerobic respiration
Rigor mortisRigor mortis
Origin Origin (attachment)(attachment)
Insertion Insertion (attachment)(attachment)