Anatomy Muscular System Quiz

What muscles are labeled?

a

b

c

d

e

Pectoralis major

Abdominals

External obliques

Frontalis

Latissimus dorsi

Deltoid

Soleus

Trapezius

Triceps

What is the primary function of the muscular system?

• To provide the body with its shape

• To protect internal organs

• To produce movement

• To store minerals

Which type of muscle tissue is under voluntary control?

• Smooth muscle

• Cardiac muscle

• Skeletal muscle

• Elastic muscle

Identify the highlighted muscle

• BIceps

• Triceps

• Oblique

• Trapezius

What is the basic unit of a muscle called?

• Myofibril

• Sarcomere

• Muscle fiber

• Fascicle

Which protein is primarily responsible for muscle contraction?

• Keratin

• Myosin

• Actin

• Collagen

What is the role of calcium ions in muscle contraction?

• They activate myosin heads

• They break down ATP

• They bind to troponin, changing its shape

• They decrease the pH of the muscle cell

What is the term for the attachment site of a muscle that remains relatively fixed during muscular contraction?

• Origin

• Insertion

• Ligament

• Tendon

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

• Producing heat

• Maintaining posture

• Filtering blood

• Facilitating movement

Which of the following muscles is involved in the breathing process?

• Biceps brachii

• Gastrocnemius

• Diaphragm

• Gluteus maximus