Nervous System and Muscle Function Quiz

What are the two main components of the nervous system?

• Central nervous system and peripheral nervous system

• Autonomic nervous system and somatic nervous system

• Sympathetic nervous system and parasympathetic nervous system

• Sensory nervous system and motor nervous system

Which part of the neuron is responsible for receiving signals from other neurons?

• Axon

• Dendrites

• Myelin sheath

• Synapse

What is a motor unit composed of?

• A single neuron and all the muscle fibres it innervates

• Multiple neurons and a single muscle fibre

• A single neuron and a single muscle fibre

• Multiple neurons and multiple muscle fibres

What does the 'all or nothing' law of muscle contraction state?

• A muscle fibre will partially contract if the stimulus is weak

• A muscle fibre will fully contract or not contract at all

• A muscle fibre will contract only if the stimulus is above a certain threshold

• A muscle fibre will contract in proportion to the stimulus strength

What is the primary function of muscle spindles?

• To detect changes in muscle tension

• To detect changes in muscle length

• To provide energy to muscles

• To protect muscles from excessive stretching

Which of the following best describes autogenic inhibition?

• A reflex that causes a muscle to contract in response to stretching

• A reflex that causes a muscle to relax in response to its own tension

• A reflex that causes a muscle to contract in response to tension in the opposing muscle

• A reflex that causes a muscle to relax in response to stretching

What is the role of Golgi tendon organs?

• To detect changes in muscle length

• To detect changes in muscle tension

• To initiate muscle contraction

• To provide nutrients to muscles

What is the size principle of motor unit recruitment?

• Smaller motor units are recruited before larger ones

• Larger motor units are recruited before smaller ones

• All motor units are recruited simultaneously

• Motor units are recruited in a random order

Which of the following describes reciprocal inhibition?

• A process where a muscle relaxes in response to its own tension

• A process where a muscle contracts in response to stretching

• A process where a muscle relaxes when the opposing muscle contracts

• A process where a muscle contracts when the opposing muscle relaxes

How do neuromuscular adaptations from resistance training benefit athletic performance?

• By increasing muscle endurance and flexibility

• By improving muscle strength and power

• By enhancing cardiovascular endurance

• By reducing muscle size and strength