Skeletal Muscle and NMJ Review after project

Front

What is a fascicle in muscle anatomy?

Back

A fascicle is a bundle of muscle fibers.

Front

What connective tissue sheath surrounds each muscle fiber?

Back

Endomysium.

Front

What is the scientific name for a muscle fiber bundle?

Back

Fascicle.

Front

Which connective tissue surrounds a group of fascicles?

Back

Perimysium.

Front

What is the outermost connective tissue layer surrounding a muscle?

Back

Epimysium.

Front

What are the contractile units of a muscle fiber?

Back

Sarcomeres.

Front

What ions are primarily involved in generating an action potential in muscle fibers?

Back

Sodium (Na) and Potassium (K).

Front

What is the role of calcium ions in muscle contraction?

Back

Calcium ions trigger the interaction between actin and myosin, leading to muscle contraction.

Front

What is the neuromuscular junction (NMJ)?

Back

The NMJ is the synapse or junction between a motor neuron and a muscle fiber.

Front

What neurotransmitter is released at the NMJ to initiate muscle contraction?

Back

Acetylcholine (ACh).