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What type of neuron that detects bright light and provides high resolution color vision?
The type of neuron that detects bright light and provides high-resolution color vision is called a cone cell. Cone cells are photoreceptors found in the retina of the eye, and they are responsible for color discrimination and sharp visual acuity in well-lit conditions. There are three types of cone cells, each sensitive to different wavelengths of light, corresponding to blue, green, and red colors. This allows for the perception of a wide spectrum of colors and detailed images in bright environments.
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When does the activation of a motor neuron occur in a stretch flex?
The activation of a motor neuron in a stretch reflex occurs when a muscle spindle detects a quick stretch in a muscle. This sensory information is relayed to the spinal cord, where it synapses with the motor neuron corresponding to the stretched muscle. The motor neuron is then activated, causing the muscle to contract and counteract the stretch, leading to the reflexive response. This process happens rapidly, often without conscious thought, to protect the muscle from excessive stretching.
What connects a motor and a sensory neurone in the central nervous system and is involved in a reflex arc?
An interneuron connects a motor neuron and a sensory neuron in the central nervous system and plays a crucial role in a reflex arc. When a sensory neuron detects a stimulus, it sends a signal to the interneuron, which processes the information and relays the response to the motor neuron, triggering an appropriate reaction. This rapid communication allows for quick reflexive actions without the need for conscious thought.
What is the portion of the neuron that accepts incoming impulses?
The receptor is the part of the neuron (usually a dendrite) that detects a stimulus. Dendrites are extensions of the main cellular body of the neuron called the soma; the impulse is passed on to another neuron at the other end, which is called the axon. Neurons transmit impulses to each other via electro-chemical connections to each other that are known as synapses.
What structure transmits impulses from a receptor organ to an interneuron?
The structure that transmits impulses from a receptor organ to an interneuron is the sensory neuron. When a receptor organ detects a stimulus, it generates an electrical signal that travels along the sensory neuron's axon. This signal then reaches the synapse with the interneuron, facilitating the transmission of the impulse to the central nervous system for processing.
What occurs during the reflex arc.?
The pathway that an impulse travels from your foot back to your leg is an example of a reflex arc. A reflex arc includes a sensory receptor (in this case, a receptor in your toe), sensory neuron, motor neuron, and effector (leg muscle). Some reflex arcs include interneurons. In other reflex arcs, a sensory neuron communicates directly with a motor neuron.
Structure at the end of a neuron that detects information?
receptor
When you touch something hot, a neuron in your finger senses the temperature. Which happens first?
an action potential moves along the neuron
What are the first and last elements in a spinal reflex?
The first element in a spinal reflex is the sensory receptor, which detects a stimulus. The last element is the effector, which carries out a response to the stimulus.
How does reflex occur?
This is what happens:a receptor detects a stimulus (change in the environment)a sensory neuron sends a signal to the relay neuronthe relay neuron sends the signal to the motor neuronthe motor neuron sends a signal to the affected partthe affected part produces a response
What is a Specialized area of sensory neuron that detects a specific stimulus?
A specialized area of sensory neuron that detects a specific stimulus is called a sensory receptor. These receptors are designed to respond to specific forms of stimulation, such as touch, light, or sound, and convert the energy from these stimuli into electrical signals that the nervous system can interpret.
What happends at the synapse during the reflex?
During a reflex, the synapse serves as the critical junction where neurotransmitters are released from the presynaptic neuron, allowing communication with the postsynaptic neuron. When a sensory neuron detects a stimulus, it transmits an electrical signal to the spinal cord, where it synapses with an interneuron or motor neuron. This rapid transmission enables a quick response, often bypassing the brain for immediate action. Ultimately, the motor neuron then sends a signal to the muscles, initiating a reflexive action.
A fiber tract that provides for communication between different parts of cns is called?
Neuron
When does the activation of a motor neuron occur in a stretch flex?
The activation of a motor neuron in a stretch reflex occurs when a muscle spindle detects a quick stretch in a muscle. This sensory information is relayed to the spinal cord, where it synapses with the motor neuron corresponding to the stretched muscle. The motor neuron is then activated, causing the muscle to contract and counteract the stretch, leading to the reflexive response. This process happens rapidly, often without conscious thought, to protect the muscle from excessive stretching.
What connects a motor and a sensory neurone in the central nervous system and is involved in a reflex arc?
An interneuron connects a motor neuron and a sensory neuron in the central nervous system and plays a crucial role in a reflex arc. When a sensory neuron detects a stimulus, it sends a signal to the interneuron, which processes the information and relays the response to the motor neuron, triggering an appropriate reaction. This rapid communication allows for quick reflexive actions without the need for conscious thought.
Mechanism of reflex arch?
A reflex arc is a neural pathway that controls a reflex action. It involves a sensory neuron that detects a stimulus, sends a signal to the spinal cord or brain, where it is processed, and then a motor neuron sends a signal back to muscles or glands to produce a response. This process allows for rapid, automatic responses to stimuli without conscious thought.
What is the portion of the neuron that accepts incoming impulses?
The receptor is the part of the neuron (usually a dendrite) that detects a stimulus. Dendrites are extensions of the main cellular body of the neuron called the soma; the impulse is passed on to another neuron at the other end, which is called the axon. Neurons transmit impulses to each other via electro-chemical connections to each other that are known as synapses.
What is the flow of information in a spinal reflex arc in the correct order?
The reflex arc includes the sensory neuron (sensory intake) to the motor neuron (motor response). This two neuron arc is the fastest. Many times an interneuron at the level of the spinal cord is involved. It passes information to the brain more slowly. It is like an "incident report".
