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Total questions: 15
Worksheet time: 8mins
What two proteins are needed for muscle contraction in the human body?
tropin & tropymosin
actin $ Calcium
actin & myosin
ATP & Calcium
What do we call the simplest part of a muscle that is made up of tiny, parallel threads called?
sarcomere
myofibril
perimysium
Epimysium
Your muscle fibers form large, string like bundles called?
Epimysium
perimysium
Myofibril
Fascicles
What are the two components that are needed to begin contraction?
Acytelcholine and Actin
Acytelcholine and myosin
ATP and Calcium ions
ATP and Sodium ions
Where are the actin and myosin filaments in every one of your muscle fibers located?
endomysium
perimysium
Epimysium
Sarcomere
Name what this is in your mucles?
sarcomere
sarcoplasmic reticulum
mitochondria
tublules
What is the very first thing that needs to occur for a muscle contraction?
actin
myosin
Calcium
Action Potential by a motor neuron.
Which of the following list of words would include the function of muscles?
movement, heat production, posture, contractility
movement, heat production, posture, excitability, contractility, extensiblity, elasticity
movement, blood formation, heat production
none of the above
What do you call the muscle attachment, where the muscle does not move when it contracts?
attachment
insertion
origin
none of the above
What are the three types of muscle ?
cardiac, smooth, skeletal
smooth ER, Rough ER
skeletal only
all the above
What do you call the structure in blue?
myosin
actin
cross bridge
ATP
Name the area in the left diagram?
synaptic cleft
Cardy B
Neuromuscular Junction
None
Name the structure labeled #1 in diagram.
endomysium
epimysium
perimysium
myofibril
Name the structure labeled #5 in diagram.
endomysium
epimysium
perimysium
myofibril
Name the structure labeled #3 in diagram.
endomysium
epimysium
perimysium
myofibril
