Exploring the Nervous System: Functions and Anatomy

Who first used the phrase 'getting on my nerves'?

• Virginia Woolf

• Charles Dickens

• James Joyce

• William Shakespeare

What is the longest neuron in the human body?

• Optic nerve

• Spinal cord

• Axon of a giraffe

• Sciatic nerve

What are the receivers in the neuron structure called?

• Axon terminals

• Dendrites

• Myelin sheath

• Soma

Which system controls voluntary body movements?

• Autonomic nervous system

• Somatic nervous system

• Peripheral nervous system

• Central nervous system

What does the central nervous system consist of?

• Spinal cord and nerves

• Brain and nerves

• Brain and heart

• Brain and spinal cord

Which neurons carry signals towards the CNS?

• Motor neurons

• Effector neurons

• Sensory neurons

• Interneurons

What happens when you smell chocolate chip cookies?

• Interneurons block the signal

• Motor neurons move towards the cookies

• Efferent neurons activate

• Afferent neurons carry the signal

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Which cells form the myelin sheath in the CNS?

• Astrocytes

• Oligodendrocytes

• Schwann cells

• Microglia

What is the function of astrocytes?

• Conducting nerve impulses

• Forming the myelin sheath

• Providing nutrients to neurons

• Destroying pathogens

How do electrical impulses travel in myelinated nerve fibers?

• Jumping from node to node

• Slower than in unmyelinated fibers

• At the speed of light

• In a continuous flow without interruption