BIOL 342-Gardner Exam 2 Questions With Answers
100% Correct
Three main classes of muscle - ANSWER 1. skeletal muscle
2. smooth muscle
3. cardiac muscle
skeletal muscle - ANSWER connects bones and are used for complex coordinated activities
smooth muscle - ANSWER surround internal organs (large and small intestine) and large
blood vessels, regulates blood pressure and flow, forms sphincters and produces contractions
cardiac muscle - ANSWER striated muscle of the heart, beats on its own, have a single
nucleus, high in myoglobin and mitochondria, have intercalated discs (conduct action
potentials)
Properties of muscular tissue - ANSWER excitability, contractility, extensibility, elasticity
isometric contraction - ANSWER muscle develops tension but does not shorten, flexing
isotonic contraction - ANSWER muscle shortens because muscle tension exceeds load, there is
movement
, eccentric isotonic contraction - ANSWER lengthening of a muscle during a contraction,
lowering the dumbbell
concentric isotonic contraction - ANSWER muscle shortens and pulls on another structure,
curl the dumbbell
skeletal muscle functions - ANSWER Produce skeletal movement
Maintain body position
Support soft tissues
Guard openings
Maintain body temperature
Store nutrient reserves
Skeletal Muscle connective tissues - ANSWER epimysium, perimysium, endomysium
Epimysium - ANSWER separates muscles from surrounding tissue
Perimysium - ANSWER surrounds muscle fiber bundles (fascicles)
Endomysium - ANSWER surrounds each individual muscle fiber
100% Correct
Three main classes of muscle - ANSWER 1. skeletal muscle
2. smooth muscle
3. cardiac muscle
skeletal muscle - ANSWER connects bones and are used for complex coordinated activities
smooth muscle - ANSWER surround internal organs (large and small intestine) and large
blood vessels, regulates blood pressure and flow, forms sphincters and produces contractions
cardiac muscle - ANSWER striated muscle of the heart, beats on its own, have a single
nucleus, high in myoglobin and mitochondria, have intercalated discs (conduct action
potentials)
Properties of muscular tissue - ANSWER excitability, contractility, extensibility, elasticity
isometric contraction - ANSWER muscle develops tension but does not shorten, flexing
isotonic contraction - ANSWER muscle shortens because muscle tension exceeds load, there is
movement
, eccentric isotonic contraction - ANSWER lengthening of a muscle during a contraction,
lowering the dumbbell
concentric isotonic contraction - ANSWER muscle shortens and pulls on another structure,
curl the dumbbell
skeletal muscle functions - ANSWER Produce skeletal movement
Maintain body position
Support soft tissues
Guard openings
Maintain body temperature
Store nutrient reserves
Skeletal Muscle connective tissues - ANSWER epimysium, perimysium, endomysium
Epimysium - ANSWER separates muscles from surrounding tissue
Perimysium - ANSWER surrounds muscle fiber bundles (fascicles)
Endomysium - ANSWER surrounds each individual muscle fiber
