Anatomy

The triceps are called the triceps brachii muscle, a muscle on the back of the upper arm. This muscle can stretch the forearm in the elbow joint. Both overload and inactivity can lead to complaints

The so-called quadriceps femoris muscle is located on the abdomen (front or ventral side) of the thigh and consists of four different muscle heads. Therefore, it is more colloquial as a four-headed thigh extensor than

Every cell in the human organism needs oxygen. This enters the body from outside with the help of breathing, where it is processed directly.

The nucleus tractus solitarii is the neural nucleus of human taste and is located in the diamond pit in the brain stem. Its nerve fibers connect the brain with the taste buds of the tongue as well as with the vagus nerve. Damage to the solitary nucleus

The photoreceptors of the retina responsible for light-sensitive monochromatic night vision and for peripheral vision are called rods. The main concentration of the rods is outside the central area of ​​the retina

The photoreceptors on the retina of the eye responsible for color and sharp vision are called cones. They are strongly concentrated in the yellow spot, the area of ​​colored and at the same time sharpest vision. Man has

The capillary is the finest human blood vessel. It is essential for the supply of nutrients and oxygen to the organs and an important part of the bloodstream.

The lower legs of humans are not only important tools for the human gait, they are often also an optical feature: they can be tight or hairy, they are tanned or have varicose veins. All of this often has to do with the

The pulmonary valve regulates the flow of blood from the heart to the lungs. Illnesses can significantly impair performance.

The umbilical cord connects mother and child in the womb during pregnancy. The fetus is connected to the mother's bloodstream via the placenta. After birth, it loses its meaning.

Microtubules are protein filaments that have a tubular structure and, together with the actin and intermediate filaments, form the cytoskeleton of eukaryotic cells. They stabilize the cell and also affect the transports and movements within

Myelin is a special, particularly lipid-rich, biomembrane which, as the so-called myelin sheath or myelin sheath, encloses axons of the nerve cells of the peripheral nervous system and the central nervous system and the nerve fibers contained therein

The pancreas (medically, pancreas) is a gland that belongs to the digestive organs of humans and also of all vertebrates. Lying in the upper abdomen of humans, it is one of the vital organs.

The pylorus (stomach gatekeeper) represents the transition between the stomach outlet and the duodenum. It is responsible for the fact that the stomach contents only reach the small intestine and do not return from there in the homogenized state. The vast majority

The motor or neuromuscular endplate is the contact point between a motor neuron and a muscle cell. It is also known as a neuromuscular synapse and is used to transmit excitation between a motor nerve fiber and a

When a bone fractures, a callus develops as the fracture heals. This tissue ossifies over time and ensures a complete restoration of function and stability. Under certain conditions, the

Nerve tissue is organized in a network of glial cells and neurons. While the nerve cells serve as the conduction of excitation, the glial cells take on organizational functions. Inflammation, necrosis and masses in the nervous system can

The sinus node is the electrical clock generator of the heart, which is responsible for the generation of excitation or the heart rate. A pacemaker cell can discharge itself, so it dictates the heart's rhythm. A malfunction of the

The bundle of His consists of special heart muscle cells and, together with the sinus node and the atrioventricular node (AV node), is part of the excitation conduction of the heart muscles. The bundle of His provides the only electrical connection from the atria

The heart consists of a right and a left half and is divided into four chambers. The heart septum, also known as the septum cordis, runs lengthways between the two halves of the heart. The septum separates the four chambers of the heart