The Amazing Nervous System: Types of Neurons and Reflex Arcs

The video explains the complex process of how the nervous system responds to stimuli, focusing on the roles of different types of neurons: sensory neurons, motor neurons, and interneurons. It describes how these neurons work together in a reflex arc to produce an automatic response, such as pulling your hand away from a hot object. The reflex arc involves sensory neurons detecting pain, interneurons processing the impulse in the spinal cord, and motor neurons triggering a muscle response.

What is the primary role of sensory neurons in the nervous system?

• To trigger muscles to respond

• To respond to stimuli and transmit information to the central nervous system

• To conduct impulses away from the central nervous system

• To carry impulses within the central nervous system

Which type of neuron is responsible for conducting impulses away from the central nervous system?

• Motor neurons

• Interneurons

• Sensory neurons

• Receptor neurons

How do interneurons function within the nervous system?

• They respond to environmental stimuli

• They carry impulses within the central nervous system and interact with other neurons

• They conduct impulses away from the central nervous system

• They transmit information to the central nervous system

What is a reflex arc?

• A pathway of neurons for an automatic, involuntary response

• A voluntary response to a stimulus

• A type of sensory neuron

• A group of motor neurons

In a reflex arc, what is the sequence of neuron activation?

• Motor neuron, sensory neuron, interneuron

• Interneuron, motor neuron, sensory neuron

• Sensory neuron, interneuron, motor neuron

• Sensory neuron, motor neuron, interneuron