Nervous System Quiz

What is the main control and communication centre of the body?

• Endocrine system

• Nervous system

• Respiratory system

• Circulatory system

Which part of the nervous system is responsible for all voluntary actions?

• Parasympathetic system

• Sympathetic system

• Autonomic system

• Somatic system

What is the role of the motor neurons in the nervous system?

• Carry messages to the CNS from the sensory receptors

• Control voluntary functions

• Carry messages from the CNS to the muscles

• Control involuntary functions

According to the 'all or none law', what happens when an impulse is sent down to a motor neuron to stimulate a motor unit?

• Only a few muscle fibres within that unit are innervated

• None of the muscle fibres within that unit are innervated

• All muscle fibres within that unit are innervated

• Some muscle fibres within that unit are innervated

What determines the strength of muscle contractions?

• The length of the muscle fibres

• The frequency of neuron impulses to motor units

• The number of motor units

• The size of the motor neuron

Which part of the nervous system is responsible for speeding up functions of the body?

• Sympathetic system

• Parasympathetic system

• Somatic system

• Autonomic system

What is the role of the sensory neurons in the nervous system?

• Control voluntary functions

• Control involuntary functions

• Carry messages from the CNS to the muscles

• Carry messages to the CNS from the sensory receptors

What is the function of the Central Nervous System (CNS)?

• Control voluntary actions

• Control involuntary actions

• Interpret and respond to sensory input

• Speed up functions of the body

Which part of the nervous system is responsible for slowing down functions of the body?

• Sympathetic system

• Parasympathetic system

• Somatic system

• Autonomic system

What is the function of the Peripheral Nervous System (PNS)?

• Speed up functions of the body

• Interpret and respond to sensory input

• Control involuntary actions

• Control voluntary actions