Muscular System Flashcards
smooth muscle tissue
non-striated, involuntary, found in internal organs
Endomyisum
covers an individual muscle fiber
Epimysium
Outer membrane found around the muscle
Excitability
respond to a stimulus from a neuron or hormone
Origin
attachment of the tendon to the more stationary bone
Shin splints involve which muslce?
tibialis anterior
Blocks the active site on an actin filament
troponin & tropomyosin
Contactability
can shorten when stimulated
Ca+ (calcium)
Comes in from a nerve cell to remove molecules blocking active sites
major task of the muscular system
posture, heat production, movement
Tendon
attaches muscle to bone
Rotator cuff muscles
Supraspinatus, infraspinatus, teres minor, subscapularis
Muscle
made of many bundles of fibers
Action of gastrocnemius
plantarflexion of the foot (point toe)
Actin
Myofilaments (thin) that is essential to muscle contraction
Extensibility
can lengthened or stretch past original shape
Epimysium
Outer membrane found around the whole muscle
4 characteristics of muscle tissue
excitability, contactability, extensibility, elasticity
Lack of ____, causes you to get out of breath and muscle burning during a workout.
oxygen
Separates one sarcomere from the next
Z-line
ATP
Prepares a myosin head for its power stroke
Elasticity
ability to recoil or bounce back to original shape
Oxygen
Essential to making plenty of ATP in cellular respiration
skeletal muscle tissue
striated, voluntary, found in skeletal muscles
Insertion
attachment of the tendon to the more moveable bone
Perimysium
covers a fascicle
cardiac muscle tissue
striated, involuntary, found in the heart
