Reflex actions are sudden responses, which do not involve any thinking. For example,
when we touch a hot object, we withdraw our hand immediately without thinking as
thinking may take time which would be enough to get us burnt.
The sensory nerves that detect the heat are connected to the nerves that move the
muscles of the hand. Such a connection of detecting the signal from the nerves (input)
and responding to it quickly (output) is called a reflex arc. The reflex arcs −connections
present between the input and output nerves − meet in a bundle in the spinal cord. Reflex arcs are formed in the spinal cord and the information (input) reaches the brain.
The brain is only aware of the signal and the response that has taken place. However,
the brain has no role to play in the creation of the response.
The Human Reflex Physiology Review Sheet states that "Conversely, other reflexes require the involvement of the brain, since many different inputs must be evaluated before the appropriate reflex is determined. Superficial cord reflexes and pupillary responses to light are in this category" (p. 342).
The Hering-Breuer reflexes are also known as the "inflation reflex" and "deflation reflex." These reflexes help regulate breathing by preventing over-inflation of the lungs during inhalation and promoting exhalation when the lungs are deflated. They play a crucial role in maintaining respiratory rhythm and ensuring efficient gas exchange.
it is a reasoning that doesn"t make sense , false reasoning.
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Protection(?)
Reflex actions are sudden responses, which do not involve any thinking.
The brain initiates a reflex response by sending signals down the spinal cord to the specific muscle or organ involved. However, the actual reflex action occurs at the level of the spinal cord, without the need for input from the brain. This allows for a quicker and more automatic response to potentially harmful stimuli.
i think its the brain...
brain and the spinal cord will reaction
because it is the cells
It is then possible for the brain to modify or 'condition' some reflexes
The brain needs to be informed of a reflex action to coordinate and modulate the response accordingly. This information allows the brain to adjust the reflex response based on the circumstances, ensuring appropriate reactions to stimuli and maintaining overall control of motor functions.
eating
No, it is by definition involuntary. The neural impulses which cause the action do not go through the brain at all.
yes brain i s involved in reflex actions as it makes a pathway for sensory neuron to connect with and brain then directs the motor neuron to take a particular action which is given by effector !(muscles)
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.