Muscles & Muscle Contraction

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

Synaptic vesicles store acetylcholine.

A bundle of muscle fibers is called a fascicle.

Skeletal muscle is found attached to bones throughout the body.

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

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

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

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

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

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