Muscle Tissue Flashcards
(37 cards)
Specialized proteins for movement…
Actin and myosin, which make up myofilaments
Muscle plasma membrane…
Sarcolemma
Cytoplasm of muscle cells…
Sarcoplasm
Voluntary control of this type of muscle…
Skeletal Muscles
Visceral Muscles are…
Internal Organs
Functional characteristics of muscle tissue…
Excitability, contractility, extensibility, elasticity
Three types of muscle tissue…
Skeletal, cardiac, smooth
Three types of connective tissue wrappings…
Epimysium, perimysium and endomysium
Bundle of muscle fibers within a muscle…
Fascicle
Connective tissue wrapping around a muscle (organ)…
Epimysium
Connective tissue wrapping around a fascicle…
Perimysium
Connective tissue wrapping around a muscle fiber…
Endomysium
Complex organelle composed of bundles of myofilaments…
Myofibrils
End of a muscle attached to the immovable bone, responsible for stability…
Origin
End of a muscle attached to the movable bone, responsible for movement…
Insertion
Transient depolarization event…
Action potential
Neurons that stimulate muscles to contract…
Motor neurons
Nervous system that deals with voluntary control…
Somatic nervous system (SNS)
Where a motor neuron meets a muscle fiber…
Neuromuscular junction
Ions that stimulate action potential…
Sodium (Na+) and potassium (K+)
Acetylcholinesterase is…
Enzyme that degrades ACh to close receptor gate
Repolarization occurs (direction; period)…
In the same direction as depolarization; during refractory period
Type of contraction without movement…
Isometric contraction
Type of contraction with movement…
Isotonic contraction
