Reflex Arc Components Quiz

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Questions and Answers

What is a receptor?

A receptor is a specialized cell or structure that detects and responds to specific stimuli.

What is a sensory neuron?

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

What is a spinal nerve?

A spinal nerve is a mixed nerve that transmits sensory and motor signals to and from the spinal cord.

What is an interneuron?

An interneuron is a type of neuron that connects sensory and motor neurons within the central nervous system. Signup and view all the answers

What is a motor neuron?

A motor neuron is a neuron that transmits signals from the central nervous system to effectors like muscles and glands. Signup and view all the answers

What is an effector?

An effector is a muscle or gland that performs a response based on signals from motor neurons. Signup and view all the answers

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Study Notes

Reflex Arc Components

Receptor: A specialized cell or structure that detects changes in the environment (stimuli) and converts them into electrical signals.
Sensory Neuron: Transmits sensory information from the receptor to the central nervous system (CNS), facilitating the reaction process.
Spinal Nerve: A mixed nerve that carries both sensory and motor information to and from the spinal cord; connects the CNS to the peripheral nervous system.
Interneuron: A type of neuron that connects sensory and motor neurons within the CNS; plays a key role in reflex actions and processing information.
Motor Neuron: Relays signals from the CNS to effectors, enabling movement or action in response to stimuli.
Effector: Any organ or cell that responds to signals from motor neurons; typically includes muscles or glands that carry out the response.