Definition The papilla is an area on the retina of the eye. This is where all the nerve fibers of the retina converge and leave the eyeball as a bundled nerve cord in order to be able to transmit the sensory impressions of the eye to the brain. Anatomy The papilla is a circular area … Papilla
Papilloedema Papilledema, also called congestion pupil, is a pathological bulge of the optic nerve head, which is normally slightly convex. Unlike optic disc excavation, pressure from behind on the optic nerve is increased, causing it to bulge forward. The causes of papilledema can be very diverse. In addition to the optic nerve, numerous arteries and … Papilloedema | Papilla
Synonyms Medical: Neuron, ganglion cell Greek: Ganglion = node brain, CNS (central nervous system), nerves, nerve fibers Declaration Ganglia are nodular accumulations of nerve cell bodies outside the central nervous system (= brain and spinal cord). They therefore belong to the peripheral nervous system. A ganglion usually serves as the last switch point before the … Spinal GanglionGanglion Cell
Synonyms in a broader sense vegetative nervous system, spinal cord, nervous systemThe parasympathetic nervous system is the antagonist of the sympathetic nervous system and is – like the latter – a part of the vegetative (also: autonomous) nervous system. The autonomic nervous system is important for the control of our organs and glands, it is … Parasympathetic nervous system
Definition An abscess on a tooth is an encapsulated accumulation of pus in the tissue of the oral mucosa, which occurs in the course of an inflammation. The origin of the inflammatory process can be the tooth itself or the surrounding tissue. An abscess can only be treated surgically. Symptoms – An overview These symptoms … Abscess on tooth
Therapy In order to be able to completely treat an abscess on a tooth, a surgical intervention is necessary in any case. In case of teeth sensitive to knocking, with bone loss visible in the x-ray, the tooth is opened as a first measure to stop the pain, in order to let the pus flow … Therapy | Abscess on tooth
Causes – An overview Possible causes for an abscess on the tooth are Untreated severe inflammation of the gums Deep, untreated gum pockets Periodontitis Root Cancer Alveolar inflammation Deep, untreated caries Inflammation in the dental pulp (pulpitis) In order to be able to determine the exact cause of an abscess in the oral cavity, a … Causes – An overview | Abscess on tooth
Diagnosis On an x-ray, an accumulation of pus at the root tip due to a shadowing can be seen. The area with the pus appears darker than the surrounding area and the tooth. However, not all pus shading occurs, caries and the pulp, for example, are also darker in the X-ray. There are different types … Diagnosis | Abscess on tooth
Synonyms brain, CNS, nerves, nerve fibers Digestion of food Breathing or Reproduction The cerebrospinal nervous system and The autonomic nervous system. The brain (= lat. Cerebrum) and The spinal cord (= Latin medulla spinalis).
Synonyms in a broader sense vegetative nervous system, sympaticus Definition The sympathetic nervous system is the antagonist of the parasympathetic nervous system and is – like the latter – a part of the vegetative (also: autonomous) nervous system. The autonomic nervous system is important for the control of our organs and glands, it is called … Sympathetic nervous system
Effect The effect of the sympathetic nervous system has already been mentioned above and will be summarized here once again in tabular form: Eye Pupil dilation Heart Faster beating (increased frequency and increased contraction force) Lung Dilatation of the airways Salivary glands Decreased salivation Skin (includes sweat glands) Increased sweating; erection of hairs; narrowing of … Effect | Sympathetic nervous system
Tasks of the sympathetic nervous system The sympathetic nervous system is part of the autonomous nervous system, i.e. the nervous system that functions independently of the brain. It represents the activating part. This means that it reacts in situations that can be potentially dangerous and adjusts all body functions to a possible fight. Nowadays, humans … Tasks of the sympathetic nervous system | Sympathetic nervous system
