WorksheetsMuscular System Review
Total questions: 22
Worksheet time: 13mins
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
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
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
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
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
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
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
During a sprint, a runner suddenly feels a sharp pull in the thigh. What is most likely happening?
Tendinitis from repetitive movement
Strain from overstretched muscle fibers
Cramps from lack of electrolytes
Infection of muscle cells
Ava is playing soccer and suddenly twists her ankle. Her coach tells her she might have a sprain, but Ava wonders if it could be a strain instead. What is the main difference between a strain and a sprain?
Strains involve muscles, sprains involve ligaments
Strains involve ligaments, sprains involve tendons
Strains involve bones, sprains involve cartilage
They are the same injury
Grace is a tennis player who often practices her serves and swings. Why are joints like her shoulders and elbows prone to tendinitis?
They rarely move
They are used in repetitive motions
They do not contain tendons
They lack nerve connections
Elijah is a baseball pitcher who has started experiencing elbow pain after frequent practices. What likely happened?
Broken blood vessels in the elbow
Ligament in elbow ripped in one event
Tendon became inflamed from overuse
Muscle died from lack of oxygen
Elijah is a young boy who has been diagnosed with Duchenne muscular dystrophy. His doctor explains that the condition is caused by a defect in a specific gene. What gene is defective in Duchenne muscular dystrophy?
Dystrophin (DMD)
Actin
Myosin
Collagen
Olivia has been diagnosed with muscular dystrophy. Over time, her condition seems to get worse. Why does this happen?
Muscle fibers cannot rebuild properly
Nerves multiply too fast
Tendons become tighter
Calcium destroys neurons
Scarlett has been experiencing changes in her muscles over the past few months. Which symptom would best indicate that she might have muscular dystrophy?
Sudden temporary cramps
Gradual weakening and shrinking of muscles
Sharp pain after exercise
Tremors and shaking
Scarlett and Avery both have muscular dystrophy, but their symptoms and the muscles affected are different. Why might this be the case?
Different patterns of muscle strain
Differences in muscle groups affected and inheritance
Amount of protein in diet
Age at which person exercises
Ava is a genetic counselor discussing spinal muscular atrophy (SMA) with a family. She explains that a specific gene is affected in this condition. Which gene is Ava referring to?
DMD
MYO1
ACTN3
SMN1
Aria notices that her muscles are getting weaker, even though she hasn't been injured or overexerted herself. Her doctor explains that she has SMA. How does SMA cause muscle loss?
Muscles tear during activity
Motor neurons die, so muscles weaken from lack of stimulation
Bones shrink leading to weakness
Muscles lose oxygen supply
Priya is studying about neurological disorders in her biology class. She learns that one particular condition is caused by an injury to the developing brain, often before or during birth. What causes cerebral palsy?
Spinal nerve damage
Loss of acetylcholine receptors
Injury to developing brain
Bacterial infection
Maya has cerebral palsy and wants to improve her quality of life. Which treatment would be most helpful for her?
Antibiotics
Physical therapy & mobility aids
Bone replacement surgery
Electrolyte intake
Charlotte notices that she often feels muscle weakness, especially after physical activity. Her doctor explains that this is due to a condition called myasthenia gravis. Why does Charlotte experience muscle weakness?
Motor neurons do not release neurotransmitters
Immune system destroys acetylcholine receptors
Muscles cannot relax after contraction
Calcium builds up excessively
The body has several organ systems. Which organ system is pictured here?
muscular system
skeletal system
digestive system
circulatory system
respiratory system
nervous system
Label the front section of the muscular system
Gastronemious
Quadracept Group
Deltoid
Abdominal Rectis
Bicep
