Understanding the Nervous System

What is the primary function of the nervous system?

• To process and communicate information

• To control voluntary movements only

• To digest food

• To pump blood throughout the body

What are the two main parts of the central nervous system?

• Brain and Spinal Cord

• Somatic and Autonomic Systems

• Heart and Lungs

• Liver and Kidneys

Which system controls involuntary actions like heartbeat and digestion?

• Somatic Nervous System

• Autonomic Nervous System

• Peripheral Nervous System

• Central Nervous System

What does the sympathetic nervous system activate?

• Rest and Digest response

• Fight or Flight response

• Sensory perception

• Voluntary muscle movements

Which nervous system is thought to operate independently of the CNS in some instances?

• Somatic Nervous System

• Sympathetic Nervous System

• Enteric Nervous System

• Parasympathetic Nervous System

What is the longest nerve in the human body?

• The vagus nerve

• The radial nerve

• The sciatic nerve

• The optic nerve

What is the role of oligodendrocytes in the nervous system?

• To sense external stimuli

• To regulate heartbeat

• To provide insulation to neurons in the CNS

• To digest food

Which type of neuron transmits signals from sensory receptors to the CNS?

• Interneurons

• Efferent Neurons

• Afferent Neurons

• Glial Cells

What happens in a reflex action?

• The heart rate increases

• The digestive system is activated

• The spinal cord directly processes and responds to stimuli

• The brain processes the information before responding

Why are neuroscientists interested in understanding neural circuits?

• To enhance computer processing speeds

• To improve internet connectivity

• To create smarter robots

• To increase human lifespan