Reflex Arc Formative Check

Front

What is a reflex arc?

Back

A reflex arc is a neural pathway that controls a reflex action. It involves sensory neurons, interneurons, motor neurons, and effectors.

Front

What role does the stimulus play in a reflex arc?

Back

The stimulus is the initial trigger that activates the sensory neurons, leading to a reflex action.

Front

Define sensory neuron in the context of a reflex arc.

Back

A sensory neuron is a type of neuron that transmits sensory information from receptors to the central nervous system.

Front

What is the function of the motor neuron in a reflex arc?

Back

The motor neuron carries signals from the central nervous system to the effector, causing a response.

Front

What is an effector in a reflex arc?

Back

An effector is a muscle or gland that responds to the signals from motor neurons, resulting in a reflex action.

Front

What is the role of interneurons in a reflex arc?

Back

Interneurons connect sensory and motor neurons within the central nervous system, facilitating communication between them.

Front

Identify the pathway of a reflex arc.

Back

The pathway of a reflex arc typically follows this order: stimulus → sensory neuron → interneuron → motor neuron → effector.

Front

What happens when a reflex arc is activated?

Back

When a reflex arc is activated, it results in an immediate, involuntary response to a stimulus, bypassing conscious thought.

Front

Explain the difference between voluntary and involuntary actions.

Back

Voluntary actions are controlled consciously, while involuntary actions, like reflexes, occur automatically without conscious control.

Front

What is the significance of reflex arcs in the human body?

Back

Reflex arcs are crucial for protecting the body from harm by enabling quick responses to potentially dangerous stimuli.