Skeletal Muscles Functions
Quiz
•
Biology
•
University
•
Practice Problem
•
Easy
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Charles Martinez
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28 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What is the name of the thick myofilaments?
actin
myosin
myoglobin
tropomyosin
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What is the name of the thin myofilaments in the muscle cell?
actin
myosin
troponin
collagen
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
The contractile unit of a muscle is called the __________.
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Number 3 represents which of the following events
action potential reaches the terminal branches
sodium rushes into the muscle fiber
calcium leaving the sarcoplasmic reticulum
ACh crossing the synapse
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Contractions are generated by
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Once calcium is released, it will
attach to the myosin heads
attach to receptors in the T-tubules
attach to actin receptors
attach to the troponin to expose actin receptors
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The diagram represents the neuromuscular junctions. Z is pointing to which of the following?
sodium ions used to generate an impulse in the muscle fiber
calcium ions used to trigger muscle contraction
acetylcholine used to stimulate the muscle to contract
potassium ions used to repolarize the neuron
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