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Where does the nerve impulse travel from the reflex arc?
The nerve impulse travels through the reflex arc. It travels from the sensor through the sensory neurone, through the spinal cord and motor neurone to the effector muscle.
What neurons are involved in a reflex?
3 neurons are included in the reflex arc. They are: Afferent neurons (take the message to the spinal cord) (sensory) Association neurons (directs message to the efferent neuron and the brain) (report reflex to the brain) Efferent neurons (takes message to effector) (motor) Not all reflexes have interneurons.
What are the type of nerve cells?
There are three different types of neurone: sensory, relay and motor - which are involved in a reflex arc.
What is the smallest functional unit of the nervous system?
The neuron is the smallest functional unit of the nervous system. It is responsible for transmitting information through electrical and chemical signals. Neurons make up the basic building blocks of the nervous system and are essential for communication within the brain and between the brain and the rest of the body.
How may you Explain the role of sensory and motor neurones in a reflex arc.?
what is the role of sensory and motor neurones in a reflex arc
The sensory receptor sensory neuron motor neuron and effector involved in a reflex form a?
A reflex arc.
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.
Which of these is not one of the essential compponents of a reflex arc?
output to upper motor neuron
Describe the reflex arc?
A reflex arc is the neural pathway that mediates a reflex action. In higher animals, most sensory neurons do not pass directly into the brain, but synapse in the spinal cord. This characteristic allows reflex actions to occur relatively quickly by activating spinal motor neurons without the delay of routing signals through the brain, although the brain will receive sensory input while the reflex action occurs.
How does effector relate to reflex arc?
An effector is at the end of a reflex arc as it is the muscle or gland that 'does' the reflex. What the effector does is the outcome of the reflex arc.
Last step of a reflex arc?
PNS delivers motor response from CNS to effectors...
What is the sequence of events in a typical reflex arc?
receptor detects a stimulus - change in the environmentsensory neurone sends signal to relay neuronemotor neurone sends signal to effectoreffector produces a response
