Reflex Viscerocutaneous

Viscerocutaneous reflex: what is it and how does it work?

The viscerocutaneous reflex, also known as the viscerodermal reflex, is an automatic response of the body to irritation of internal organs, which manifests itself in a change in the condition of the skin. This reflex is one of many reflexes that regulate the functioning of internal organs and ensure homeostasis of the body.

The viscerocutaneous reflex occurs through the connection between the internal organs and the skin. Internal organs and skin are innervated by the same nerves, which transmit information about the state of the internal organs to the central nervous system. When internal organs are irritated, the central nervous system reacts to this signal and transmits information along the same nerves to the skin, which leads to a change in its condition.

Changes in the condition of the skin can manifest themselves in various ways, for example, in the form of changes in color, tone or temperature of the skin in the corresponding area. Such changes can be noticeable both visually and by palpation.

The viscerocutaneous reflex can be used to diagnose various diseases of internal organs. For example, with diseases of the stomach and intestines, a change in the condition of the skin on the abdomen may be observed. With heart disease, changes in skin condition may appear on the chest. This reflex can also be used to assess the effectiveness of treatment of diseases of internal organs.

In conclusion, the viscerocutaneous reflex is an important mechanism for regulating the functioning of the internal organs of the body. The use of this reflex in the diagnosis and treatment of diseases of the internal organs can help improve the quality of life of patients.

The viscerocrural reflex (p. viscerocruralis from the Latin viscera - internal organs and crus - knee) is an anastomosis between the nerve of the II lumbar plexus (L2-L4) and the posterior tibial vein and popliteal artery. Reflex participation of the lower (internal) and upper (external) parts of the thoracic and lumbar nerve plexuses. It is carried out to ensure the outflow of venous blood from the lower extremities and maintain venous outflow from the pool of the posterior internal iliac veins and pelvic veins. The motor act is carried out in the calf muscle, extensors of the knee and ankle joints. When the nerve is damaged, the venous and lymphatic drainage from the lower leg and foot is disrupted.

Below is a **description of the reflex** of the viscero-wrapped one:

The topographically modified visceromuscular reflex, or anastomotic visceral reflex Janisch (Descemet's membrane), proposed by academician A.V. Janisch (1941), is studied. There is no specific sign of biopotentials. Instead, hyperpolarizing changes in the membrane potential with a predominance of depolarization are determined, the presence of a paradoxical reaction, which is not reflected when using electrical stimulation. Despite the pronounced disturbances in cardiac activity against the background of expansion of the aorta and heart, norepinephrine is indifferent. It is believed that as a result of stimulation of the neurons of the anterior roots of the spinal cord, the parasympathetic ganglia of the pelvic viscera are excited. From there, increased blood formation occurs. However, when the posterior trunk of the vagus nerve is paralyzed, blood flow is reduced. This reaction manifests itself reliably after 60 s (P < 0,05)