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WorksheetsMuscle Physiology Overview
Total questions: 25
Worksheet time: 8mins
Which is not a function of Muscle tissue?
movement
stability
heat production
hematopoeisis
Universal Property of Muscle that it can stretch to 3x length without rupturing.
Excitability
Conductivity
Extensibility
Elasticity
Universal Property of Muscle that means responsiveness.
Excitability
Conductivity
Extensibility
Elasticity
Universal Property of Muscle after stretching a cell it can return to its normal length.
Excitability
Conductivity
Extensibility
Elasticity
Universal Property of Muscle that excitation can spread around the entire plasma membrane.
Excitability
Conductivity
Extensibility
Elasticity
The epimysium covering on the outside of the muscle can blend into cordlike _________ or sheet-like ___________.
ligaments, tendons
tendons, ligaments
fascia, ligaments
tendons, fascia
Contains myosatellite stem cells.
endomysium
perimysium
epimysium
fascia
Bundles fascicle together.
endomysium
perimysium
epimysium
fascia
Organelle that wraps and surrounds the myofibril and stores Calcium.
sarcolemma
sarcoplasm
sarcoplasmic reticulum
T Tubules
Organelle that is plasma membrane of muscle fiber.
sarcolemma
sarcoplasm
sarcoplasmic reticulum
T Tubules
Actin in myofibril
sarcomere
thin filament
thick filament
sarcolemma
Myosin in myofibril
sarcomere
thin filament
thick filament
sarcolemma
Repeating functional unit in myofibril
sarcomere
thin filament
thick filament
sarcolemma
Average number of sarcomeres in myofibril
10
100
1,000
10,000
Z line to Z line
I band
A band
H band
sarcomere
light bands, actin only
I band
A band
H band
sarcomere
dark band, both thin & thick myofilaments
I band
A band
H band
sarcomere
thin myofilaments connected together by actinins
I band
A band
H band
Z line
In the zone of overlap: ____ thick filaments surround each thin filament and ____thin filaments surround each thick filament.
2, 4
3, 6
4, 2
6, 3
Neurotransmitter released at motor end plate.
Dopamine
Acetylcholine
Epinephrine
Histamine
_____ & ATP trigger the contraction cycle of muscle fiber.
Sodium
Potassium
Phosphorous
Calcium
During muscle fiber contraction: Z lines __________
are unchanged
move farther apart
move closer together
line up with each other
During muscle fiber contraction: A bands __________
are unchanged
move farther apart
move closer together
line up with each other
During muscle fiber contraction: H bands & I bands __________
are unchanged
widen
narrow
line up with each other
Muscle fiber returns to normal length when _________.
Sodium is reabsorbed
Potassium is reabsorbed
Calcium is reabsorbed
Cloride is reabsorbed
