MCQ on The Muscular System
Frequently Asked MCQ quiz on the Muscular System – MCQ Quiz for Competitive Exam Preparation – These questions given will be useful for competitive exams preparation. We will be updating more mcq regularly, please follow our website regularly.
What is the primary function of the muscular system?
A) Support and protection
B) Hormone production
C) Movement
D) Blood cell formation
Answer: C) Movement
Which type of muscle is responsible for involuntary movements?
A) Skeletal muscle
B) Cardiac muscle
C) Smooth muscle
D) Striated muscle
Answer: C) Smooth muscle
Which muscle type is striated and under voluntary control?
A) Cardiac muscle
B) Smooth muscle
C) Skeletal muscle
D) Involuntary muscle
Answer: C) Skeletal muscle
Which muscle is responsible for breathing?
A) Diaphragm
B) Rectus abdominis
C) Trapezius
D) Pectoralis major
Answer: A) Diaphragm
Which muscle type makes up the walls of blood vessels?
A) Skeletal muscle
B) Cardiac muscle
C) Smooth muscle
D) Striated muscle
Answer: C) Smooth muscle
What is the smallest functional unit of a muscle fiber?
A) Sarcomere
B) Myofibril
C) Myosin filament
D) Actin filament
Answer: A) Sarcomere
Which connective tissue surrounds individual muscle fibers?
A) Epimysium
B) Perimysium
C) Endomysium
D) Tendon
Answer: C) Endomysium
What is the main function of tendons?
A) Transmit nerve impulses
B) Provide flexibility
C) Connect muscle to bone
D) Store energy
Answer: C) Connect muscle to bone
Which muscle type is found in the walls of the heart?
A) Skeletal muscle
B) Cardiac muscle
C) Smooth muscle
D) Voluntary muscle
Answer: B) Cardiac muscle
Which muscle is responsible for flexing the forearm?
A) Biceps brachii
B) Triceps brachii
C) Deltoid
D) Quadriceps femoris
Answer: A) Biceps brachii
What is the main function of the sarcoplasmic reticulum in muscle cells?
A) Store calcium ions
B) Produce energy
C) Conduct nerve impulses
D) Synthesize proteins
Answer: A) Store calcium ions
Which muscle is responsible for extension of the knee joint?
A) Quadriceps femoris
B) Hamstrings
C) Gastrocnemius
D) Tibialis anterior
Answer: A) Quadriceps femoris
What is the function of the neuromuscular junction?
A) Generate action potentials
B) Store energy
C) Transmit nerve impulses to muscle fibers
D) Synthesize neurotransmitters
Answer: C) Transmit nerve impulses to muscle fibers
Which muscle is responsible for plantar flexion of the foot?
A) Tibialis anterior
B) Gastrocnemius
C) Soleus
D) Quadriceps femoris
Answer: B) Gastrocnemius
What is the role of calcium ions in muscle contraction?
A) Trigger release of neurotransmitters
B) Break down ATP for energy
C) Bind to troponin to expose binding sites on actin
D) Inhibit enzyme activity
Answer: C) Bind to troponin to expose binding sites on actin
Which muscle is responsible for abduction of the arm (moving it away from the body)?
A) Deltoid
B) Pectoralis major
C) Latissimus dorsi
D) Trapezius
Answer: A) Deltoid
What is the role of ATP in muscle contraction?
A) Act as a neurotransmitter
B) Provide energy for cross-bridge formation
C) Regulate calcium ion concentration
D) Transmit electrical impulses
Answer: B) Provide energy for cross-bridge formation
Which structure stores and releases calcium ions during muscle contraction?
A) Sarcomere
B) Myofibril
C) T tubule
D) Sarcoplasmic reticulum
Answer: D) Sarcoplasmic reticulum
Which muscle is responsible for internal and external rotation of the shoulder joint?
A) Deltoid
B) Pectoralis major
C) Rotator cuff muscles
D) Trapezius
Answer: C) Rotator cuff muscles
What is the primary function of myoglobin in muscle cells?
A) Store oxygen
B) Store glucose
C) Provide structural support
D) Synthesize neurotransmitters
Answer: A) Store oxygen
Which muscle is responsible for extension of the elbow joint?
A) Biceps brachii
B) Triceps brachii
C) Brachialis
D) Deltoid
Answer: B) Triceps brachii
What is the function of acetylcholine at the neuromuscular junction?
A) Break down ATP
B) Inhibit muscle contraction
C) Stimulate muscle contraction
D) Store calcium ions
Answer: C) Stimulate muscle contraction
Which structure surrounds the entire muscle and separates it from surrounding tissues?
A) Tendon
B) Fascicle
C) Epimysium
D) Endomysium
Answer: C) Epimysium
Which muscle type is branched and contains intercalated discs?
A) Skeletal muscle
B) Cardiac muscle
C) Smooth muscle
D) Voluntary muscle
Answer: B) Cardiac muscle
What is the purpose of creatine phosphate in muscle cells?
A) Store oxygen
B) Break down glucose
C) Store energy
D) Transmit nerve impulses
Answer: C) Store energy
Which muscle type is found in the walls of hollow organs such as the stomach and intestines?
A) Skeletal muscle
B) Cardiac muscle
C) Smooth muscle
D) Striated muscle
Answer: C) Smooth muscle
What is the function of myofibrils in muscle cells?
A) Store calcium ions
B) Transmit nerve impulses
C) Generate force during contraction
D) Produce ATP
Answer: C) Generate force during contraction
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