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WorksheetsMuscle Tissue Structure and Function Quiz
Total questions: 22
Worksheet time: 11mins
Muscle tissue has layers of organization. These layers are surrounded by different structures. Put these structures in correct order from outside to inside.
Endomysium - epimysium - perimysium
Perimysium - endomysium - epimysium
Epimysium - perimysium - endomysium
Perimysium - epimysium - endomysium
Which of the following is the correct order?
Fascicle, muscle fiber, myofibril, sarcomere, myofilament
Sarcomere, muscle fiber, fascicle, myofibril, myofilament
Muscle fiber, fascicle, sarcomere, myofibril, myofilament
Fascicle, muscle fiber, myofilament, myofibril, sarcomere
A neurotransmitter that stimulates skeletal muscles
Acetylcholinesterase (AChE)
Adenosine triphosphate (ATP)
Norepinephrine
Acetylcholine (ACh)
The heads of the myosin filaments are called ___ when they link the thin and thin filaments together
Connections
Cross-connections
Cross-bridges
Power stroke
What is the function of Ca++ during a skeletal muscle contraction?
Connecting to nebulin
Connecting to tropomyosin
Connection to myosin
Connecting to troponin
D on the image would be
Myofibril
Sarcomere
Sarcolemma
Sarcoplasmic reticulum
What is 6 on this diagram?
Sarcolemma
Mitochondria
Sarcoplasmic reticulum
T tubules
The protein that covers the binding site on actin when a muscle is relaxed is called
Troponin
Nebulin
Tropomyosin
Myosin
This structure stores calcium in the muscle cell
Sarcolemma
Sarcoplasmic reticulum
Sarcomere
Sarcocalcium storage
The A band contains which type of filaments
Only thick
Only thin
Both thick and thin
These organelles store the neurotransmitter in the nerve cell
Vesicles
Golgi apparatus
Sarcoplasmic reticulum
Lysosomes
What combination of chemicals are essential for a muscle contraction?
Potassium, Adenosine diphosphate, Phosphorous
Sodium, Potassium, Glucose
Calcium, Potassium, Phosphorous
Calcium, Adenosine triphosphate, Sodium
Which is NOT a function of the muscular system?
Generating heat
Movement
Storing red blood cells
Protecting fragile organs
Which of the following occurs When ATP binds to the myosin head?
Myosin head detaches from actin
Myosin head forms cross-bridge
Myosin undergoes power stroke
Myosin releases calcium
Which of the following decreases during muscle contraction?
M line
A band
H zone
Z line
Ca++ will be released from the sarcoplasmic reticulum when
the action potential reaches the neuromuscular junction
ATP binds to sarcoplasmic reticulum
Acetylcholine enters the synaptic cleft
Action potential travels along T tubules
The power stroke will occur when
ATP binds to the myosin head
The myosin head hydrolyses ATP into ADP and Pi
The myosin head releases Pi
The myosin head releases ADP
What is NOT a component of muscle relaxation
Ca++ binds with tropomyosin
Active sites on actin are covered, no cross-bridge interaction
Sarcoplasmic reticulum recaptures Ca++
ACh is broken down by AChE
Which of the following refers to the muscle cell?
Myofibril
Fascicle
Myofilament
Muscle fiber
Which of the following nerves causes skeletal muscles to contract?
Autonomic
Sympathetic
Somatic
Parasympathetic
What ion in the neuromuscular junction causes an action potential to travel along the sarcolemma?
Ca++
AChE
Na+
ATP
Which of the following is FIRST in muscle contraction?
Calcium ion enters the sarcoplasm
Sodium ion enters the sarcolemma
Acetylcholine enters the synaptic cleft
Acetylcholinesterase removes acetylcholine
