Skeletal Muscle Function and Disorders Quiz

Test your knowledge on muscle physiology with questions covering functions, disorders, and terminology. Find out how much you know!

#1

Which of the following is not a function of skeletal muscles?

Movement of the body
Generation of heat
Storage of minerals
Maintenance of posture
#2

What is the primary function of skeletal muscles?

Pumping blood
Digesting food
Generating force to produce movement
Filtering waste products
#3

Which structure connects skeletal muscles to bones?

Ligament
Tendon
Cartilage
Synovium
#4

Which of the following is a voluntary action controlled by skeletal muscles?

Breathing
Digestion
Reflexes
Walking
#5

Which type of muscle fibers are predominantly used for endurance activities?

Type I fibers (slow-twitch)
Type IIa fibers (fast-twitch oxidative)
Type IIb fibers (fast-twitch glycolytic)
Type III fibers (intermediate)
#6

Which mineral is essential for muscle contraction and relaxation?

Calcium
Iron
Magnesium
Sodium
#7

Which neurotransmitter is responsible for signaling the contraction of skeletal muscles?

Dopamine
Serotonin
Acetylcholine
GABA
#8

What is the medical term for a sudden, involuntary contraction of a skeletal muscle?

Spasm
Tetanus
Atrophy
Myopathy
#9

What is the term for the smallest functional unit of a skeletal muscle?

Myofibril
Myocyte
Sarcomere
Tropomyosin
#10

Which of the following is a symptom of a muscle strain?

Joint swelling
Muscle weakness
Bone fracture
Decreased heart rate
#11

What is the term for the decrease in muscle size due to disuse or injury?

Atrophy
Hypertrophy
Dystrophy
Isotrophy
#12

Which disorder is characterized by chronic widespread musculoskeletal pain?

Fibromyalgia
Osteoarthritis
Rheumatoid arthritis
Spondylosis
#13

Which disorder is characterized by progressive weakness and degeneration of skeletal muscles?

Fibromyalgia
Muscular dystrophy
Myasthenia gravis
Rhabdomyolysis
#14

What is the primary energy source for skeletal muscle contraction during short bursts of intense activity?

Glucose
Fatty acids
Creatine phosphate
Lactic acid
#15

Which enzyme breaks down acetylcholine to terminate muscle contraction?

Acetylcholinesterase
Cholinesterase
Acetyltransferase
Cholinase
#16

Which disorder is characterized by the autoimmune destruction of acetylcholine receptors at the neuromuscular junction?

Myasthenia gravis
Multiple sclerosis
Guillain-Barré syndrome
Parkinson's disease
#17

Which disorder is characterized by the abnormal accumulation of fibrous tissue in skeletal muscles, leading to contractures and weakness?

Dermatomyositis
Fibromyalgia
Dupuytren's contracture
Fasciitis

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