Nerve pathways from the head and neck converge in the superior cervical ganglion or upper neck ganglion. Anatomically, four broad areas can be distinguished, each of which includes several branches; these rami belong to different nerve tracts

Uracil is a nucleic base that forms a base pair with adenine in the RNA and forms the counterpart to the similarly structured thymine in the DNA.

Muscle pain or myalgia can have many causes. After all, people have around 650 different muscles in their bodies that serve very different functions. Each of these muscles can become acutely or chronically tense and permanently harden

The infant phase is the first phase of a child's life from birth to the first year of life. It goes through a very eventful physical and mental development and is mostly suckled by the mother during this period.

The canine guidance is part of the occlusion (closure, closure), the contact between the teeth of the lower and upper row of teeth. The canines form the slideway for the antagonistic (opposite) teeth and guide the lower jaw

In hyperoxaluria, there is an increased excretion of oxalic acid in the urine. The oxalic acid precipitates with calcium to form the poorly soluble calcium oxalate and leads to the formation of calculus in the kidneys. The disease can be kidney failure and systemic

Bacterial infection is a disease caused by bacteria entering the human body. The skin, respiratory and digestive tracts are most commonly affected. When treating a bacterial infection

All malignant tumors that can be present in bone tissue are summarized under the term bone cancer. The most common bone cancer is called osteosarcoma and occurs in both adults and adolescents. Bone cancer

Corneal opacity is a disease of the cornea that occurs comparatively frequently. Nevertheless, it is relatively unknown, which is due to the numerous causes. Treatment is also difficult.

The peristaltic reflex is a movement reflex in the intestine. The reflex is triggered by pressure on the mechanoreceptors located in the intestine. The nervous system of the intestine is relatively autonomous, so that the reflex can still be observed in an isolated intestine

The coupling ability coordinates partial body movements in the context of an overall movement or an action goal. This learned skill is one of seven coordinative skills. Coupling ability can be trained, but can be done through the central nervous system

Colds are one of the most common infectious diseases. In poorer countries they are high on the list of causes of death. This is due to the tiny rhinoviruses, which have special properties.