Muscles & Muscle Contraction

Front

What type of muscle is found in the heart?

Back

Cardiac muscle is the type of muscle found in the heart.

Front

What do synaptic vesicles store in the neuromuscular junction?

Back

Synaptic vesicles store acetylcholine.

Front

What is one bundle of muscle fibers called?

Back

A bundle of muscle fibers is called a fascicle.

Front

What type of muscle is found attached to bones throughout the body?

Back

Skeletal muscle is found attached to bones throughout the body.

Front

What is the sliding filament theory?

Back

The sliding filament theory is a model that describes how actin and myosin filaments slide over each other during muscle contraction.

Front

What are the three types of muscle tissue?

Back

The three types of muscle tissue are skeletal, cardiac, and smooth.

Front

What is the primary function of skeletal muscle?

Back

The primary function of skeletal muscle is to facilitate movement by contracting and pulling on bones.

Front

What role does acetylcholine play in muscle contraction?

Back

Acetylcholine is a neurotransmitter that transmits signals from nerve cells to muscle cells, triggering muscle contraction.

Front

What is the function of myofibrils in muscle cells?

Back

Myofibrils are the contractile threads found in striated muscle cells, responsible for muscle contraction.

Front

What is the difference between voluntary and involuntary muscles?

Back

Voluntary muscles are controlled consciously (e.g., skeletal muscles), while involuntary muscles operate without conscious control (e.g., cardiac and smooth muscles).