NERVOUS SYSTEM SPECIAL SENSE
SPINALCORD
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
A reflex arc takes the same path as a voluntary action
|
|
|
A reflex a travels from a sensory neuron to the spinal cord then to a motor neuron, skipping the brain
|
|
|
A reflex arc takes longer than a voluntary action
|
|
|
There is no difference between a reflex arc and a voluntary action
|
Detailed explanation-1: -A reflex arc is a neural pathway that controls a reflex. In vertebrates, most sensory neurons do not pass directly into the brain, but synapse in the spinal cord. This allows for faster reflex actions to occur by activating spinal motor neurons without the delay of routing signals through the brain.
Detailed explanation-2: -Voluntary action are under control of ones will, whereas reflex action are spontaneous involuntary, nerve-mediated activity produced at the unconscious level by stimulating specific receptors.
Detailed explanation-3: -Answers: A reflex, or reflex action, is an involuntary and nearly instantaneous movement in response to a stimulus. Reflex actions happen through the reflex arc, which is a neural pathway that controls the reflexes. The receptor here is the sense organ that senses danger.
Detailed explanation-4: -Reflex action is rapid and spontaneous action in response to any stimulus which doesn’t involve the brain. Reflex action is a sudden, involuntary response to stimuli. It helps organisms to quickly adapt to adverse circumstances that could have the potential to cause bodily harm or even death.
Detailed explanation-5: -Reflexes are automatic responses to harmful stimuli around us. These are executed by special pathways involving a sensory and a motor neuron. These reflex arcs bypass the brain and occur mostly in the spinal cord. Due to this, these actions are faster than typical movements and don’t require conscious control.