When the doctor shines his light into your eyes or uses his reflex hammer, this action, unpleasant in itself, has the goal of checking your reflexes and thus the state of your nervous functions, because the multitude of bodily reactions, most of which are unconscious to us, shows exactly how our brain performance is doing. … Importance of Reflexes in the Body
An intrinsic reflex is characterized by the fact that the stimulus site and the responding organ are identical. Most intrinsic reflexes are muscle stretch reflexes that protect us, in which brief muscle stretch-whether caused by a reflex hammer or a sudden buckling of the knee joint, for example-leads to contraction and thus twitching of the … Reflexes: Intrinsic Reflex and Extrinsic Reflex
Pathological reflexes occur when there is nerve or brain damage. The best known pathological reflex is the Babinski reflex, which causes extension of the big toe and flexion of all other toes when the sole of the foot is brushed. It is one of the early childhood reflexes and is usually not triggerable after 12 … Reflexes: Pathological, Conditioned, Conditioned Reflex
The patellar tendon connects the lower end of the kneecap to the upper part of the tibia and is therefore, strictly speaking, not a tendon but a ligament. This is because, by definition, a tendon connects a muscle to a bone. However, because the patellar tendon is an extension of the quadriceps tendon that ends … What is the Patellar Tendon Reflex?
The patellar tendon reflex corresponds to the monosynaptic patellar reflex and is triggered by pressure on the patellar tendon. The hamstring muscles contract as part of the involuntary intrinsic reflex movement, and the lower leg springs upward. An exaggerated patellar reflex is a pyramidal tract sign. What is the patellar tendon reflex? The patellar tendon … Patellar Tendon Reflex: Function, Tasks, Role & Diseases
What is the patellar tendon reflex? The patellar tendon reflex (PSR) or “knee-cap reflex” is a reflex of its own that is frequently used in everyday clinical practice. This reflex is triggered by a light blow with the reflex hammer on the ligamentum patellae, a broad and strong ligament just below the patella, which represents … Patellar Tendon Reflex
Segments of the spinal column In humans, the sensitive neurons (afferences) move to the lumbar segments (lumbar vertebrae) L2-L4, in smaller animals to L3-L6. There the excitation is switched to the motor neurons (efferences) via one synapse each. These neurons pass through the plexus lumbalis and back to the muscle in the femoral nerve, where … Segments of the spinal column | Patellar Tendon Reflex
What reflexes are there on the arm? You can trigger different reflexes on your arm. The starting position is the patient in the supine position, who places his arms loosely on the groin. As a rule, the following four are tested: Biceps tendon reflex: in the biceps tendon reflex, one of the examiner’s fingers is … What reflexes are there on the arm? | Reflexes
What is reflex epilepsy? Reflex epilepsy is a rather rare disease of the brain, in which certain signals or stimuli are reacted to with a seizure. These stimuli are very differently pronounced, but they are often processes that place a particularly high strain on the brain, i.e. complex performances. Often visual stimuli are the triggers … What is reflex epilepsy? | Reflexes
Definition Reflexes are uncontrollable, fast and always the same reaction to certain stimuli. Reflexes are mediated by our nervous system, consisting of nerve fibers that communicate with each other via so-called synapses. A reflex always involves a sensor/receptor on which the stimulus acts. Also always involved is an effector, on which the reflex response takes … Reflexes
Task of the reflexes Reflexes are reactions of the body to external stimuli that occur immediately and do not require any special control or readiness. This is possible as quickly as possible because the reflexes are based on a simple circuitry that directly causes a reaction to a stimulus. The strength and duration of the … Task of the reflexes | Reflexes
Reflexes in babies Newborn children and infants have a variety of reflexes that differ from those of an adult due to their different life situation. Infants move almost exclusively reflexively. This is helpful because they do not yet have the motor skills to maintain their balance, for example. Thus, these reflexes serve, among other things, … Reflexes in babies | Reflexes
