A Level PE - Neuromuscular System

What is the first level of structure in a muscle?

What is the second level of structure in a muscle?

What is the third level of structure in a muscle?

What is a single muscle fibre composed of?

What are myofibrils?

How does movement happen?

Why do muscles get smaller as they contract?

What are three different types of muscle fibres?

Slow oxidative muscle fibres are most suitable for which type of performers?

Fast oxidative glycolytic muscle fibres are most suitable for which type of performers?

Fast twitch glycolytic muscle fibres are most suitable for which type of performers?

What are the characteristics of phosphocreatine?

Which muscle fibre type consists of the most phosphocreatine? Provide an example of a sport/event that would benefit this.

Why don't slow oxidative muscle fibres need lots of PC stores?

Describe what myoglobin is and its function.

What gives muscle fibres their red colour?

Which muscle fibres need oxygen as a critical element and why?

What are mitochondria?

What is the neuromuscular system?

What are the stages involved in the chain of command?

What is the function of dendrites?

What is the function of the axon?

What is the function of the myelin sheath?

What is the function of the nodes of ranvier?

What is the neuromuscular junction?

When the electrical impulse reaches the motor end plate, it is converted into what?

What is the all or none law?

What is a motor unit?

Name the four types of the motor neuron firing patterns.

What is Tetanic/Absolute Contraction?

What is Wave Summation?

What is Spatial Summation?

What is Graduation of Contraction?

What is the structure of a muscle fibre?

What is the function of transverse tubules?

What is a sarcomere?

Name and describe the different bands found in a sarcomere.

Explain how actin and myosin filaments in the sarcomere bind together to cause muscular contraction.

Define the term 'power stroke'.

Define the term 'ratchet mechanism'.