Control and Coordination Quiz

Which two parts make up the central nervous system?

• Brain and spinal cord

• Brain and peripheral nerves

• Spinal cord and sensory receptors

• Motor neurones and sensory neurones

What is the role of the peripheral nervous system?

• To store information

• To connect CNS with receptors and effectors

• To control higher thought processes

• To generate action potentials

Which type of neurone carries information from receptors to the CNS?

• Motor neurone

• Relay neurone

• Sensory neurone

• Interneurone

In motor neurones, the cell body is usually located:

• At the centre of the axon

• At one end of the neurone

• Outside the axon

• Within the receptor

Which feature is unique to sensory neurones compared to motor neurones?

• Presence of dendrites

• Long dendron carrying impulses to the cell body

• Long axon carrying impulses away from the cell body

• Presence of myelin sheath

Which structure insulates axons and speeds up impulse transmission?

• Synaptic vesicle

• Myelin sheath

• Sarcoplasmic reticulum

• Node of Ranvier

Where is the synaptic knob found?

• At the dendrites

• At the axon terminals

• Along the myelin sheath

• At the cell body

What is the typical resting membrane potential of a neurone?

• +70 mV

• –70 mV

• –55 mV

• 0 mV

Which ion influx causes depolarisation?

• Sodium (Na⁺)

• Potassium (K⁺)

• Calcium (Ca²⁺)

• Chloride (Cl⁻)

Which ion efflux restores repolarisation?

• Sodium (Na⁺)

• Potassium (K⁺)

• Calcium (Ca²⁺)

• Chloride (Cl⁻)