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Questions and Answers
Where are proprioceptors located?
Where are proprioceptors located?
What type of neurons carry input signal from proprioceptors to the CNS?
What type of neurons carry input signal from proprioceptors to the CNS?
What are the effectors of the input signal from the CNS?
What are the effectors of the input signal from the CNS?
Which of the following is NOT an example of proprioceptors?
Which of the following is NOT an example of proprioceptors?
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What type of nerve fibers are associated with proprioceptors?
What type of nerve fibers are associated with proprioceptors?
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Study Notes
Reflexes
- A reflex is an involuntary and nearly instantaneous movement or action in response to a stimulus.
- Reflexes are rapid and automatic responses to specific stimuli.
Reflex Arc
- Consists of five components: receptor, afferent fibers, integrating center, efferent fibers, and effector organ.
- The receptor detects the stimulus and sends a signal through the afferent fibers to the integrating center.
- The integrating center processes the information and sends a response signal through the efferent fibers to the effector organ.
- The effector organ produces the reflex response.
Somatic Motor Reflexes
- There are two types of somatic motor reflexes: monosynaptic and polysynaptic.
- Monosynaptic reflexes have one synapse between the sensory neuron and the motor neuron.
- Polysynaptic reflexes have multiple synapses between the sensory neuron, interneurons, and the motor neuron.
Autonomic Reflexes
- All autonomic reflexes are polysynaptic, with at least one synapse in the CNS and another in the autonomic ganglion.
- Autonomic reflexes involve the autonomic nervous system, which controls involuntary functions such as heart rate, digestion, and respiration.
- The pathway of an autonomic reflex includes: stimulus, receptor, sensory neuron, preganglionic autonomic neuron, autonomic ganglion, postganglionic autonomic neuron, and target cell.
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Description
Test your knowledge on reflex arcs with this quiz. Explore the components of a reflex arc, including receptors, afferent and efferent fibers, integrating centers, and effector organs.
