Quiz on the Nervous System

What type of neurons carry impulses from sense organs to the brain?

• Sensory neurons

• Interneurons

• Efferent neurons

• Motor neurons

What are the three main functions of the nervous system?

• Detecting stimuli, Responding to environment, Maintaining homeostasis

• Collecting information, Processing information, Creating a response

• Storing information, Analyzing data, Generating impulses

• Transmitting signals, Regulating hormones, Controlling muscles

What is the role of interneurons?

• Carry impulses to muscles

• Insulate the axon

• Process information and send commands

• Receive impulses from sensory organs

What is the function of the myelin sheath?

• To connect neurons

• To insulate the axon

• To generate electrical signals

• To receive impulses

What is the resting potential of a neuron?

• +30 millivolts

• -70 millivolts

• -50 millivolts

• 0 millivolts

What happens when a neuron is stimulated?

• It becomes permanently depolarized

• It remains at resting potential

• It generates a nerve impulse

• It releases neurotransmitters

What is the role of sodium ions (Na+) during a nerve impulse?

• They flow into the cell

• They are not involved in nerve impulses

• They stabilize the resting potential

• They flow out of the cell

Which part of the nervous system includes the brain and spinal cord?

• Somatic nervous system

• Central nervous system

• Autonomic nervous system

• Peripheral nervous system

What does the somatic nervous system control?

• Skeletal muscle movements

• Digestive processes

• Heart rate

• Involuntary actions

What is the function of the autonomic nervous system?

• Transmits signals to the brain

• Processes sensory information

• Controls involuntary activities

• Regulates voluntary movements