Muscle Types and Functions Quiz

What are the three main types of muscles in the human body?

• Smooth, Rough, Skeletal

• Skeletal, Cardiac, Smooth

• Cardiac, Voluntary, Involuntary

• Skeletal, Ligament, Tendon

What is the primary function of skeletal muscle?

• Pumping blood

• Lining internal organs

• Attaching to bones and enabling movement

• Storing oxygen

Which type of muscle is found only in the heart?

• Skeletal

• Smooth

• Cardiac

• Ligament

What is the defining characteristic of skeletal muscle under a microscope?

• Smooth, elongated cells

• Single nucleus per cell

• Striations due to sarcomeres

• No visible patterns

Which muscle type is involuntary and does not appear striated?

• Skeletal

• Smooth

• Cardiac

• Tendon

Tendons connect:

• Bone to bone

• Muscle to muscle

• Muscle to bone

• Ligament to cartilage

What is the functional unit of skeletal muscle contraction?

• Myosin

• Sarcomere

• Myofibril

• Mitochondria

Which protein filament moves during muscle contraction?

• Myosin

• Actin

• Myoglobin

• Collagen

What is the role of calcium in muscle contraction?

• Provides energy

• Binds to myosin

• Triggers actin-myosin interaction

• Stores oxygen

The 'Sliding Filament Theory' explains:

• How smooth muscles relax

• How actin and myosin interact for muscle contraction

• Why cardiac muscles beat rhythmically

• Why tendons are strong