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What reflex does a a sensory neuron synapses directly on a motor neuron?
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∙ 11y ago
Monosynaptic reflex
Wiki User
∙ 11y ago
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The sensory receptor sensory neuron motor neuron and effector involved in a reflex form a?
A reflex arc.
What are the first and last elements in a spinal reflex?
motor neuron and sensory neuron
Which reflex arcs contain no association neuron?
The patellar reflex is an example of a 2-neuron reflex arc. It has 1 sensory neuron and 1 motor neuron. It does not contain an association neuron and so is considered the most simple reflex in humans.
What connects the sensory neurons to motor neurons?
What connects sensory and motor neuron is the impulse called interneuron or connector neuron are connected by means of electrical impulse called synape from sensory to motor neuron.
How many synapses occur in this reflex arc?
there are 2 - one between the sensory and relay neurones; the other between the relay and motor neurones.
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.
The sensory receptor sensory neuron motor neuron and effector involved in a reflex form a?
A reflex arc.
A withdrawal reflex employs what neurons?
Withdrawal reflex or flexor reflex employs sensory neuron, interneuron and motor neuron.
What type of neuron begins a reflex arc?
A sensory receptor is the type of neuron that begins a reflex arc.
What is the pathway called that signals travel along during a reflex?
Sensory neurons which trigger reflexes are called nociceptive neurons. After entering the dorsal root of the spinal cord, the nociceptive neuron branches into two terminals: one terminal synapses with an interneuron - a localised neuron which is located entirely within the grey matter of the spinal cord, and this in turn synapses with a motor neuron which then triggers the fast reflex action. The reflex is initiated solely within the spinal cord & doesn't involve the brain at all, but at the same time, the second branch of the nociceptive neuron synapses with a sensory neuron which goes to the brain; the brain then registers the sensation of pain, and can also initiate further motor action if necessary.
What are the first and last elements in a spinal reflex?
motor neuron and sensory neuron
Which reflex arcs contain no association neuron?
The patellar reflex is an example of a 2-neuron reflex arc. It has 1 sensory neuron and 1 motor neuron. It does not contain an association neuron and so is considered the most simple reflex in humans.
What connects the sensory neurons to motor neurons?
What connects sensory and motor neuron is the impulse called interneuron or connector neuron are connected by means of electrical impulse called synape from sensory to motor neuron.
How many synapses occur in this reflex arc?
there are 2 - one between the sensory and relay neurones; the other between the relay and motor neurones.
Why are reflex actions very fast?
The impulse in a reflex action goes directly from the sensory neuron to the inter neuron to the spinal cord, which allows for faster actions.
What is the pathway of an impulse in a reflex arc?
Sensory receptor, sensory neuron, interneuron, motor neuron, and muscle.
You hit your knee a rubber hammer and it jerks?
Striking the patellar ligament with a tendon hammer just below the patella stretches the quadriceps muscles in the thigh. This stimulates stretch sensory receptors (most importantly, muscle spindles) that trigger an afferent impulse in a sensory nerve fiber of the femoral nerve leading to the lumbar region of the spinal cord. There, the sensory neuron synapses directly with a motor neuron that conducts an efferent impulse to the quadriceps femoris muscle, triggering contraction. This contraction, coordinated with the relaxation of the antagonistic flexor hamstring muscle causes the leg to kick. This reflex helps maintain posture and balance, allowing one to walk without consciously thinking about each step. The patellar reflex is a clinical and classic example of the monosynaptic reflex arc. There is no interneuron in the pathway leading to contraction of the quadriceps muscle. Instead the bipolar sensory neuron synapses directly on a motor neuron in the spinal cord' However, there is an inhibitory interneuron used to relax the antagonistic hamstring muscle. http://en.wikipedia.org/wiki/Knee_jerk
