Muscular System

Front

What is the role of calcium in muscle contraction?

Back

Calcium is needed for myosin to attach to actin, which is essential for muscle contraction.

Front

What is the power stroke in muscle contraction?

Back

The power stroke is the action of myosin pulling on the actin chain, leading to the shortening of muscle cells.

Front

What type of muscle is found in your organs?

Back

Smooth muscles are found in your organs.

Front

What are involuntary movements?

Back

Involuntary movements are actions that you cannot control, such as the beating of your heart.

Tags

NGSS.MS-LS1-3

Front

What type of neuron activates muscles?

Back

Motor neurons activate muscles.

Front

What is the sliding filament theory?

Back

The sliding filament theory explains how muscles contract by the sliding of actin and myosin filaments past each other.

Front

What are skeletal muscles?

Back

Skeletal muscles are muscles that are attached to bones and are under voluntary control.

Front

What is the function of cardiac muscle?

Back

Cardiac muscle is responsible for pumping blood throughout the body and is involuntary.

Front

What is the difference between voluntary and involuntary muscles?

Back

Voluntary muscles are under conscious control, while involuntary muscles operate without conscious control.

Front

What is the function of motor neurons?

Back

Motor neurons transmit signals from the brain and spinal cord to muscles, causing them to contract.