Muscle System Flashcards
(47 cards)
skeletal muscle
muscles attached to the skeleton ( Triceps)
cardiac muscle
The heart
smooth muscle
Stomach/ digestive system
Exicability
Able to send electrical waves (action potential) along the entire length
Elasticity
Having the ability to recoil back to its original length
Extensibility
Allows muscles to stretch or extend
Contractility
Allows muscles to pull on its attachment and shorten
Fascicle
The muscle fibers that are arranged in bundles
Epimysium
Outermost layer, surrounds entire muscle
Perimysium
Separates and surrounds fascicles
Endomysium
Surrounds each individual muscle fiber
Sarcolemma
Muscle fiber membrane
Myofibril
Individual parallel muscle fibers (made up of actin and myosin)
Sarcoplasm
Inner material surrounding the myofibril (equivalent to the cell’s cytoplasm)
Actin
Thin filaments
Myosin
Thick filaments
Types of muscle
tissue and where
can they be found
in the body
Skeletal muscle fibers are multinucleated structures that compose the skeletal muscle
Types of muscle
tissue and where
can they be found
in the body
Cardiac muscle
are only found in
the heart
Types of muscle
tissue and where
can they be found
in the body
Smooth muscles are called so because they do not have striations. These can be found in hollow organs such as bladder. stomach, uterus, intestines, and passageways of circulatory system
Properties of
muscles and
definition
Excitability-Able to send electrical waves (action potential along the entire length
(4) Properties of
muscles and
definition
Elasticity-Having
the ability to recoil
back to its original
length
Properties of
muscles and
definition
Extensibility-
Allows muscles to
stretch or extend
Properties of
muscles and
definition
Contractility-
Allows muscles to
pull on its
attachment and
Trapezius
shrugging
