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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.
How many times do you test a reflex?
Typically, a reflex is tested a few times to ensure accuracy in the assessment. The number of tests can vary depending on the specific reflex being evaluated and the individual's response.
Why cant the tongue be swallowed?
The tongue is attached to the bottom of the mouth by the lingual frenulum, which prevents it from being swallowed. Additionally, the swallowing reflex is controlled by the brain to prevent this from happening.
What is reflex action's why are they useful?
Reflex actions are automatic responses to stimuli without conscious thought, controlled by the spinal cord. They are useful for protecting the body from harm by allowing quick responses to potential dangers, such as pulling your hand away from a hot stove before you even feel the pain.
Why would such a response be of significant value in pupillary reflex?
Clinical significance[edit]In addition to controlling the amount of light that enters the eye, the pupillary light reflex provides a useful diagnostic tool. It allows for testing the integrity of the sensory and motorfunctions of the eye.[1]Under normal conditions, the pupils of both eyes respond identically to a light stimulus, regardless of which eye is being stimulated. Light entering one eye produces a constriction of the pupil of that eye, the direct response, as well as a constriction of the pupil of the unstimulated eye, the consensual response. Comparing these two responses in both eyes is helpful in locating a lesion.[1][5]For example, a direct response in the right pupil without a consensual response in the left pupil suggests a problem with the motor connection to the left pupil (perhaps as a result of damage to the oculomotor nerve or Edinger-Westphal nucleus of the brainstem). Lack of response to light stimulation of the right eye if both eyes respond normally to stimulation of the left eye indicates damage to the sensory input from the right eye (perhaps to the right retina or optic nerve).[1]Emergency room physicians routinely assess the pupillary reflex because it is useful for gauging brain stem function. Normally, pupils react (i.e. constrict) equally. Lack of the pupillary reflex or an abnormal pupillary reflex can be caused by optic nerve damage, oculomotor nerve damage, brain stem death and depressant drugs, such as barbiturates.Normally, both pupils should constrict with light shone into either eye alone. On testing each reflex for each eye, several patterns are possible.[6]Optic nerve damage on one side: (Example in parens.: Left optic nerve lesion) The ipsilateral direct reflex is lost (Example: when the left eye is stimulated, neither pupil constricts, as no signals reach the brain from the left eye due to its damaged optic nerve)The ipsilateral consensual reflex is intact (because light shone into the right eye can signal to the brain, causing constriction of both pupils via the normal oculomotor nerves)The contralateral direct reflex is intact (because light shone into the right eye can signal to the brain, causing constriction of both pupils via the normal oculomotor nerves)The contralateral consensual reflex is lost (because light shone into the eye on the damaged side cannot signal to the brain; therefore, despite the right eye's motor pathway (oculomotor nerve) being intact, no signals from the left eye are able to stimulate it due to the damage to the sensory pathway (optic nerve) of the left eye)Oculomotor nerve damage on one side: (Example in parens: Left oculomotor lesion) The ipsilateral direct reflex is lost (Example: when the left eye is stimulated, only the right pupil constricts)The ipsilateral consensual reflex is lost (Example: when the right eye is stimulated, only the right pupil constricts)The contralateral direct reflex is intact (because light shone into both eyes can still signal to the brain, and the pupil on the undamaged side will still be able to constrict via its normal oculomotor nerve)The contralateral consensual reflex is intact (because light shone into the left eye can still signal to the brain via the normal optic nerve, causing attempted constriction of both pupils; the contralateral pupil constricts via its normal oculomotor nerve, but the ipsilateral pupil is unable to constrict due to its damaged oculomotor nerve)
What is cranial reflex?
A cranial reflex is a fast, involuntary response to a stimulus. It uses the brain stem as an integrating center (the brain receives sensory information and generates a response). This is contrasted to a spinal reflex, when the response is generated in the spinal cord itself, and the brain only finds out a reflex has occurred after the fact.An example of a cranial reflex would be the tracking movements of your eyes as you are reading this sentence. The dilation and contraction of your pupils in response to different levels of light is another cranial reflex.--------------An example of a spinal reflex would be standing on a pin or touching a hot object.
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.
The letter P in combination with what number indicates a brain dead patient?
P6 - Declared brain-dead patient whose organs are being removed for donor purposes
Why do cats' skin twitch when they are touched in certain areas?
When cats' skin twitches when touched in certain areas, it is a natural reflex called the "scratch reflex." This reflex is triggered by the nerves in their skin, which send signals to their brain to react to the sensation of being touched. It is a protective response that helps cats quickly remove potential irritants or pests from their fur.
What is deep reflex?
The phrase deep reflex refers to being hit in the muscle tendon by something. An example is when the doctor checks your reflex on your knee.
Why do cats' backs twitch when they are being petted?
Cats' backs twitch when being petted because of a reflex called the "scratch reflex." This reflex is a response to the sensation of touch on their skin, causing their muscles to twitch involuntarily.
Why do you laugh while being tickled?
Laughter when being tickled is a reflex response triggered by the brain's attempt to protect sensitive areas of the body. Tickling activates a part of the brain associated with anticipation and touch, leading to a reaction that is often interpreted as being ticklish and laughing.
Can a stretch reflex be elicited in a pithed animal?
No, a stretch reflex cannot be elicited in a pithed animal because the central nervous system has been removed, including the brain and spinal cord which are necessary for the reflex to occur. The absence of a functional central nervous system prevents the sensory information from being processed and the motor response from being generated.
Does Honda still manufacture the Reflex?
The Honda Reflex is no longer being manufactured. The last year they were made was 2007.
Why would you have no abdominal reflexes?
An abdominal reflex is a polysynaptic reflex (as being superficial reflex) that is stimulated by the stroking of the abdomen around umbilicus. If thereÕs no abdominal reflex, it is the effect of a physiological absence due to tolerance or obesity.
Why does my cat's ear twitch when I touch it?
When you touch your cat's ear, the nerves in the ear send a signal to the brain, causing a reflex action that makes the ear twitch. This is a natural response to the sensation of being touched.
Why do doctors consider a person dead when the brain is not working but the heart is still beating?
This is because being dead is defined as stoppage in the functioning of brain and it is not having any relation with the functioning of heart. If the heart stops beating then there is no supply of oxygen rich blood to the brain and hence the brain dies and henceforth the person is declared dead.
