Skeletal Muscle Anatomy and Function Quiz

Test your knowledge on skeletal muscle physiology with 19 questions covering anatomy, function, and contraction mechanisms.

#1

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

Generating body heat
Maintaining posture
Producing red blood cells
Facilitating movement
#2

What is the primary function of skeletal muscles?

Pumping blood throughout the body
Aiding in digestion
Facilitating voluntary movement
Regulating body temperature
#3

Which of the following muscles is responsible for flexing the forearm?

Biceps brachii
Triceps brachii
Deltoid
Latissimus dorsi
#4

Which muscle is referred to as the 'quadriceps'?

Biceps femoris
Rectus femoris
Sartorius
Semimembranosus
#5

Which of the following is NOT a muscle of the rotator cuff?

Supraspinatus
Infraspinatus
Teres major
Subscapularis
#6

Which muscle group is primarily responsible for dorsiflexion of the foot?

Gastrocnemius
Soleus
Tibialis anterior
Peroneus longus
#7

Which muscle is responsible for flexion of the thigh at the hip joint?

Gluteus maximus
Psoas major
Rectus femoris
Adductor magnus
#8

Which protein is primarily responsible for the contraction of skeletal muscles?

Myosin
Actin
Collagen
Keratin
#9

What is the functional unit of a skeletal muscle fiber called?

Myofibril
Sarcomere
Myosin filament
Z-line
#10

Which connective tissue surrounds individual muscle fibers?

Endomysium
Epimysium
Perimysium
Fascicle
#11

What is the term for the point of attachment of a muscle to the more movable bone?

Origin
Insertion
Tendon
Bursa
#12

Which of the following is NOT a type of skeletal muscle fiber?

Type I
Type IIa
Type III
Type IIb
#13

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

Sarcomere
Myofibril
Muscle fiber
Tendon
#14

Which of the following is a characteristic of slow-twitch (Type I) muscle fibers?

High glycogen content
High fatigue resistance
Anaerobic metabolism
Rapid contraction speed
#15

Which neurotransmitter is released at the neuromuscular junction to stimulate skeletal muscle contraction?

Serotonin
GABA (Gamma-aminobutyric acid)
Dopamine
Acetylcholine
#16

During muscle contraction, what happens to the distance between the Z-lines?

Decreases
Increases
Remains the same
None of the above
#17

Which ion is responsible for triggering skeletal muscle contraction?

Potassium (K+)
Sodium (Na+)
Calcium (Ca2+)
Chloride (Cl-)
#18

Which muscle is responsible for adduction of the arm at the shoulder joint?

Deltoid
Pectoralis major
Latissimus dorsi
Teres major
#19

What is the term for the condition characterized by involuntary muscle contractions or spasms?

Dystrophy
Myopathy
Spasmophilia
Tetany

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