Nervous System Quiz

Grace is studying the human body and wonders where the nerves of the peripheral nervous system extend to. Can you help her find the answer?

• Only the brain

• Only the spinal cord

• All parts of the body

• Only the heart

What is the basic unit of the nervous system?

• Neuron

• Cell

• Atom

• Tissue

Approximately how many neurons does the human brain contain?

• 10 million

• 100 billion

• 1 trillion

• 50 billion

During a biology class, Benjamin learned about the primary function of motor neurons. What is their main role?

• Detecting light and sound

• Transmitting messages from brain to muscles

• Sending messages to the brain about taste

• Detecting pressure and heat

Sensory neurons send messages about detected stimuli to which part of the body?

• Muscles

• Brain

• Heart

• Lungs

Anika is enjoying a delicious meal. What type of neurons would be involved in detecting the taste of the food?

• Motor neurons

• Sensory neurons

• Relay neurons

• Interneurons

Which of the following is a function of sensory neurons?

• Transmitting messages to muscles

• Detecting light and sound

• Generating movement

• Controlling heart rate

What is the main difference between motor and sensory neurons?

• Motor neurons detect stimuli, sensory neurons generate movement

• Motor neurons send messages to the brain, sensory neurons send messages to muscles

• Motor neurons generate movement, sensory neurons detect stimuli

• Motor neurons control reflexes, sensory neurons control heart rate

What is the function of the axon in a neuron?

• To send chemical signals

• To send electrical signals

• To send thermal signals

• To send magnetic signals

What is the main function of the axon terminal?

• To receive signals

• To send signals

• To store signals

• To convert signals