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Chapter 6

Muscular System

QuestionAnswer
are responsible for all types of body movement Muscular System
Prefix myo refers to? muscle
Prefix mys refer to? muscle
Prefix sacro refer to? flesh
most abundant by tendons to bones Skeletal Muscle
have visible banding Striated
subject to conscious control Voluntary
around single muscle fiber and it is located around single cell or each muscle fiber Endomysium
around a fascicle of fibers Perimysium
covers the entire skeletal muscle Epimysium
on the outside of the epimysium Fascia
cord-like structure Tendons
sheet like structure Aponeuroses
it has no striations, spindle-shaped cells and single nucleus Smooth muscles
no conscious control involuntary
they always at work and never gets tired smooth muscles
has striations, joined to another muscle cell at an intercalated disc Cardiac Muscle
specialized plasma membrane Sarcolemma
specialized smooth endoplasmic reticulum Sarcoplasmic reticulum
ribbon like structures, bundles of myofilaments Myofibril
Light band I band
Dark band A band
Contains tiny proteins rods, they are found in the center of the H zone M line
is to hold the adjacent of thick filaments H zone
contractile unit of muscle fiber and they are aligned end to end along with the length of the myofibril Sarcomere
composed of the protein myosin Thick filaments
generation of power for muscle contraction ATPase enzymes
composed of the protein actin Thin filaments
have head (extension or bridges) Myosin filaments
for storage of calcium Sarcoplasmic reticulum
ability to receive and respond to a stimulus Irritability
ability to shorten when an adequate is received Contractility
the ability of the muscles to be stretched Extensibility
to recoil and resume their resting length after being stretch Elasticity
it is a part of a nerve cell that make synaptic connections with another nerve cell or with an effector cell Axon terminals
association site of nerve and muscle Neuromuscular junctions
gap between nerve and muscle Synaptic cleft
chemical released by nerve upon arrival of nerve impulse Neurotransmitter
Created by: arri019
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