Anatomy and Physiology of the Muscular System Quiz

Test your knowledge of muscle physiology with these questions on muscle types, functions, and anatomy. Find out more about skeletal, smooth, and cardiac muscles.

Practice Learn Test

Which muscle is responsible for flexing the forearm?

Biceps brachii

Triceps brachii

Deltoid

Pectoralis major

What is the primary function of the muscular system?

Support and protection

Generation of body heat

Production of blood cells

Movement

Which muscle is responsible for breathing?

Diaphragm

Rectus abdominis

Latissimus dorsi

Serratus anterior

Which type of muscle tissue is involuntary and found in the walls of hollow organs?

Skeletal muscle

Cardiac muscle

Smooth muscle

Striated muscle

Which muscle is responsible for extension of the knee joint?

Hamstrings

Quadriceps

Adductors

Gastrocnemius

Which muscle is responsible for abducting the arm at the shoulder joint?

Pectoralis major

Latissimus dorsi

Deltoid

Trapezius

Which of the following is NOT a type of muscle tissue?

Skeletal muscle

Cardiac muscle

Smooth muscle

Dermal muscle

What is the functional unit of a muscle fiber called?

Myofibril

Myofiber

Sarcomere

Myosin filament

What is the medical term for a muscle cell?

Myofibril

Myofiber

Sarcomere

Myocyte

#10

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

Maintaining posture

Regulating body temperature

Stabilizing joints

Producing voluntary movements

#11

What is the structural protein that forms thin filaments in muscle fibers?

Myosin

Actin

Troponin

Tropomyosin

#12

Which structure stores and releases calcium ions required for muscle contraction?

Sarcoplasmic reticulum

Golgi apparatus

Endoplasmic reticulum

Mitochondria

#13

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

Acetylcholine

Dopamine

Serotonin

Norepinephrine

#14

Which neurotransmitter is primarily responsible for muscle relaxation?