What is a simple reflex?

Simple reflex is an automatic reaction to the stimulus. It does not include any idea, but it is simply an involuntary action. People and animals use simple reflexes to escape from danger and in some basic situations of survival. Doctors often use reflexes to control neurological disorders, paralysis and other health problems.

One of the most common examples of simple reflex is a patellar test or a response to a knee twitch. When someone hits a specific location on the knee, the sensory cells in the knee act as receptors. These receptors send the spinal cord signal through the sensory nerve cell. Inside the spinal cord, the reflective arch sends the signal directly back to the effectors in the leg muscles through the intermediate and motor nerve cells. At that time, the muscles of the foot pulled and the lower legs jerk or kick up.

Interesting on a simple reflex is that there are only three types of nerve cells that are: sensory nerve cell, medium nerve cell and motorizedKé nerve cells. The brain only realizes the reaction after it occurs. In the case of a patellar test, the brain only realizes that the lower leg kicked up after the event is completed.

There are many other examples of simple reflexes that also occur in the human body. For example, if insects, a piece of dust or other foreign object flies into the eye of a person, it blinks into a millisecond. Also, if she has bright light into her eyes, pupils expand or shrink. In general, one cannot control whether its pupils will expand in bright light. These things happen involuntarily and each is an example of a simple reflex.

Usually the child will have simpler reflexes than older people. Simple reflexes in the newborn are designed to help newborns survive. For Examples, the child will involuntarily hold the breath when it is placed under water. Most newborns also inherently know how to suck and spice mléko. It's not something that learns, but it's a simple reflex.

Sometimes a simple reflex can help doctors diagnose problems in human neurological pathways. For example, if a doctor uses the Plantar Simple Reflex test, he will show him whether a person older than six months has abnormality of the spinal cord or brain. With the Plantar Reflex test, the outer side of the foot of the person's foot is stunned by a hard object such as the key. If the large finger of the person turns up and the rest of the fingers extends, damage may occur. If they have their fingers down, it is a sign that there may be no damage.