AnaPhy Muscular System

Which type of muscle is responsible for body movement?

• Skeletal muscle

• Cardiac muscle

• Smooth muscle

• Adipose tissue

What is the characteristic of smooth muscle?

• Has striations

• Found in the heart

• Single nucleus

• Voluntary control

Where are cardiac muscles found?

• Only in the heart

• Attached to bones

• Under conscious control

• In the walls of hollow organs

What is the function of the sarcomere?

• Storage of calcium

• Contractile unit of a muscle fiber

• Specialized plasma membrane

• Synaptic cleft

What is the neurotransmitter for skeletal muscle?

• Acetylcholine

• Adrenaline

• Dopamine

• Serotonin

What causes muscle contraction according to the Sliding Filament Theory?

• Sodium rushing out of the cell

• Myosin heads detach from actin

• Myosin heads attach to binding sites on the thin filament

• Muscle relaxation

What is the direction of muscle fibers in the naming of skeletal muscles?

• Circular

• Straight

• Curved

• Spiral

What is the role of the endomysium in skeletal muscles?

• Connects muscle to bone

• Around a single muscle fiber

• Covers the entire muscle

• Stores calcium

What is the function of the Z-disc in a sarcomere?

• Anchor for thin filaments

• Storage of calcium

• Specialized plasma membrane

• Site of neurotransmitter release

Which type of muscle is striated and involuntary?

• Skeletal muscle

• Cardiac muscle

• Smooth muscle

• Adipose tissue