The steps involved in a reflex arc start with a stimulus at a sensory neuron, travel of the stimulus by way of the sensory neuron to the spinal cord. At a relay or interneuron in the cord, the stimulus now travels by way of a motor neuron to a muscle (or gland). The muscle responds. A good example of this is what happens if a person touches a very hot surface. They will rapidly pull the hand away.
Most reflex arcs have three parts: sensory info in via sensory neuron, synapsis at an interneuron (in the spinal cord), synapsis out of interneuron to a motor neuron and a motor response. The interneuron also sends info to the brain and the person become aware of it. This is a more common reflex.
Some reflex arcs have only the sensory neuron info in and the motor out. The knee jerk reflex is an example. These are more rapid.
receptor, sensory neurone, CNS, motor neurone, and effector
Receptor; Effector
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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.
A reflex arc does not pass through the brain. The somatic reflex arc and autonomic reflex arc are two types.
spinal cordautotomicspinal cord in the central nervous system controls reflex arc and reflex action.
Damage to the spine can affect the reflex arc by delaying the nerve pathway or making it so you are unable to move a muscle.
A 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.
In a typical reflex arc, the 3 kinds are: # sensory # interneuron # and motor.
Hormones have nothing to do in reflex arc.
reflex arc
Muscles and glands are the possible effectors of a reflex arc
A reflex arc does not pass through the brain. The somatic reflex arc and autonomic reflex arc are two types.
A sensory receptor is the type of neuron that begins a reflex arc.
Reflex Arc
Reflex Arc
what is the role of sensory and motor neurones in a reflex arc
Reflexes are uncontrollable movements that happen almost instantly in response to a stimuli. A reflex arc, a neuronal circuit that controls reflexes, is where reflex activities takes place.
reflex arc