SCIENCE
NERVOUS SYSTEM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
starts off with receptors being excited. They then send signals along a sensory neuron to your spinal cord, where the signals are passed on to a motor neuron.
|
|
|
starts off with the person being excited they then send signals to the brain to your spinal cord, where the signals are passed on to a ventricle neuron.
|
|
|
A muscular organ that pumps blood out to the body to make you energized.
|
|
|
when there is a sudden interruption of blood to the brain.
|
Detailed explanation-1: -A reflex action often involves a very simple nervous pathway called a reflex arc . A reflex arc starts off with receptors being excited. They then send signals along a sensory neuron to your spinal cord, where the signals are passed on to a motor neuron. As a result, one of your muscles or glands is stimulated.
Detailed explanation-2: -In a reflex, the information is first detected in the sensor and travels along sensory neurons to the spinal cord. Once the action potential reaches the spinal cord, the information is transmitted across the synapse to the motor neuron.
Detailed explanation-3: -So the reflex arc consists of these five steps in order-sensor, sensory neuron, control center, motor neuron, and muscle. These five parts work as a relay team to take information up from the sensor to the spinal cord or brain and back down to the muscles.
Detailed explanation-4: -The stimulus could be in the form of pressure, temperature or chemicals. This is followed by the sensory neuron sending a signal to the relay neuron. The relay neuron then sends the signal to the motor neuron. The motor neuron sends a signal to the organ or a cell that acts to the stimuli called the effector.
Detailed explanation-5: -Spinal cord reflexes are simple behaviors produced by central nervous system (CNS) pathways that lie entirely within the spinal cord. The sensory afferent fibers that evoke these reflexes enter the spinal cord and activate spinal motor neurons directly or through a chain of one or more spinal interneurons.