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What is the location of an interneuron in a spinal reflex pathway?
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What is the most simple nervous system pathway?
The reflex arc is the simplest neural circuit.
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.
Why does reflex reinforcement work?
Instead of being processed in the brain, a reflex arc is processed in the vertebra, this allows for faster reflexes. Example of when the reflex arc is used is when a person touches a hot stove. The immediate response (which the reflex arc causes) is to pull away, but it doesn't really hurt till a few seconds after. This is because the brain was first bypassed, but has now had time to process what happened.
Is a response made automatically called a reflex?
yes and the spinal cord controls the action of that reflex
What part of the nervous system is responsible for the reflex arc?
The peripheral nerves and the spinal cord. When a reflex starts, the peripheral nerves in the arms or legs send a signal to the spinal cord. Normally that signal is sent on to the brain for processing. In a reflex, the spinal cord itself sends a response back to the arm or leg to move immediately.
What is the pathway of an impulse in a reflex arc?
Sensory receptor, sensory neuron, interneuron, motor neuron, and muscle.
Is the knee-jerk reflex a simple reflex stretch reflex or a spinal reflex?
spinal reflex
What is the difference between a simple spinal reflex and a complex reaction?
Simple spinal reflex is when the afferent receptor synapses directly with an efferent neuron and subsequently an effector cell/tissue. This will all take place in the spinal cord. A complex reaction will involve an intermediary interneuron or even the brain for 'processing' before synapsing with an efferent neuron and target tissue.
Which is the correct sequence in a typical reflex?
Receptor ---> sensory neuron----> interneuron (at spinal cord)---->motor neuron---->effector. The Achelles tendon reflex is a good example of how this happens. You do send infromation to the brain in the form of an "incident report" but his is much slower.
What is the most simple nervous system pathway?
The reflex arc is the simplest neural circuit.
what type of reflex is the knee?
The knee reflex is also called the knee-jerk reflex by tapping the patellar tendon with a reflex hammer. This sends sensory information to the spinal cord at L4 and motor information back to the Quadriceps in the thigh (relaxing the hamstrings). This is reflex requires only two neurons. No interneuron. And so is very rapid. It is important in balance and posture.
The knee jerk reflex is an example of a?
A reflex is a rapid, involuntary response to a stimulus. A reflex arc is the pathway traveled by the nerve impulses during a reflex.Most reflexes are spinal reflexes with pathways that traverse only the spinal cord. During a spinal reflex, information may be transmitted to the brain, but it is the spinal cord, and not the brain, that is responsible for the integration of sensory information and a response transmitted to motor neurons.Information is sent to the brain but that takes awhile longer. It is best if you remove your hand from the fire as fast as possible and not wait until the brain yells "hot, hot!".
What is the stimulus for the knee jerk reflex?
Striking the patellar tendon with a tendon hammer just below the patella stretches the muscle spindle in the quadriceps femoris muscle. This produces a signal which travels back to the spinal cord and synapses (without interneurons) at the level of L4 in the spinal cord, completely independent of higher centres. From there, an alpha-motor neuron conducts an efferent impulse back 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 is a reflex of proprioception which helps maintain posture and balance, allowing to keep one's balance with little effort or conscious thought.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.
What is spinal reflex therapy?
Spinal reflex therapy is a neurological soft tissue procedure that gets powerful and reliable results. You can learn more at Spinal Reflex Institute's website.
What part of the central nervous system controls reflexes?
The spinal cord controls reflexes. When a sensory stimulus is detected, the signal is sent to the spinal cord, which then produces a reflex action without needing input from the brain. This allows for quick responses to potential threats or dangers.
What control reflex?
spinal cord
What type of reflex does not involve the brain?
A spinal reflex does not involve the brain. This type of reflex is controlled by the spinal cord and does not require the brain to initiate a response. Examples include the knee-jerk reflex and the withdrawal reflex.
