Muscular System Review
Authored by Michelle West
Science
8th Grade
Used 61+ times
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22 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A student steps on a rusty nail while gardening. After a few days, their jaw muscles become very stiff. Which condition are they most likely developing and why?
Botulism; toxin blocks nerve signals
Tetanus; wound bacteria cause muscles to tighten
Tendinitis; tendon fibers inflamed from use
Strain; muscle fibers overstretched
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Noah was diagnosed with tetanus and started having trouble breathing. Explain why tetanus makes breathing difficult for Noah.
It weakens bones in the rib cage
It causes continuous contraction of respiratory muscles
It increases airflow into the lungs
It causes nerve swelling in the lungs
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
James accidentally steps on a rusty nail and later develops muscle stiffness and spasms. What is the mechanism behind his tetanus symptoms?
Toxin blocks acetylcholine release
Toxin prevents muscle relaxation
Immune system attacks muscle fibers
Virus destroys motor neurons
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A baby develops muscle weakness after being fed honey. What likely caused this?
Muscle tear from activity
Spores releasing toxin that blocks nerve signals
Vitamin deficiency
Tendon inflammation
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Grace accidentally eats food contaminated with botulinum toxin. Why could this situation be life-threatening for her?
It destroys bone tissue
It causes paralysis of breathing muscles
It causes extreme fever
It increases heart rate uncontrollably
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ava is considering getting Botox injections to reduce wrinkles. She wants to know how Botox actually works in the body. Which of the following best explains its mechanism?
Tightening muscle fibers
Stopping nerves from releasing acetylcholine
Increasing oxygen to muscle tissue
Strengthening tendons
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
After a long soccer match, Ethan experiences muscle cramps. He notices that drinking a sports drink helps him recover from the cramps faster than just drinking water. Why might this be?
Electrolytes help nerves send signals correctly
Sugar increases muscle strength
Electrolytes slow muscle contraction
Water eliminates lactic acid immediately
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