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Questions and Answers
Which neuron is responsible for transmitting signals from the sensory receptor to the spinal cord?
Which neuron is responsible for transmitting signals from the sensory receptor to the spinal cord?
- Motor Neuron
- Relay Neuron
- Effector Neuron
- Sensory Neuron (correct)
What happens immediately after the sensory neuron transmits a signal to the spinal cord?
What happens immediately after the sensory neuron transmits a signal to the spinal cord?
- The muscle contracts.
- The receptor is reset.
- The brain processes the signal for awareness.
- The signal is relayed to a motor neuron. (correct)
Which of the following best describes a reflex response?
Which of the following best describes a reflex response?
- It is an automatic and rapid response to stimuli. (correct)
- It requires complex processing in the brain.
- It occurs after the individual becomes aware of the stimulus.
- It is under conscious control at all times.
What is the role of the motor neuron in the reflex arc?
What is the role of the motor neuron in the reflex arc?
How does awareness of a reflex action occur in relation to the response?
How does awareness of a reflex action occur in relation to the response?
Flashcards
Reflex Arc
Reflex Arc
The pathway by which a reflex action occurs, involving sensory, relay, and motor neurons.
Sensory Neuron
Sensory Neuron
Neurons that transmit signals from sensory receptors to the spinal cord.
Relay Neuron
Relay Neuron
Neurons in the spinal cord that connect sensory and motor neurons, facilitating reflex actions.
Motor Neuron
Motor Neuron
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Involuntary Response
Involuntary Response
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Study Notes
Reflex Arc
- Reflex responses are involuntary and don't involve the conscious part of the brain.
- Awareness of the reaction happens after it occurs.
- This makes responses automatic and quick, helping to prevent damage to the body.
- A reflex arc involves sensory neurons, relay neurons, and motor neurons.
Neuron Types
- Sensory Neuron: Carries the impulse from the receptor to the spinal cord.
- Relay Neuron: Connects the sensory neuron to the motor neuron in the spinal cord.
- Motor Neuron: Carries the impulse from the spinal cord to the effector (e.g., muscle).
Reflex Arc Pathway
- Impulse starts at a receptor in the body.
- Transmitted along the sensory neuron to the spinal cord.
- Signal goes to relay neuron within the spinal cord.
- Transmitted along the motor neuron to an effector (muscle).
- A signal is also sent to the brain.
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