Krperprozesse

Mechanoreception in humans includes all senses that are excited by mechanical stimuli. They are important for the perception and control of life processes.

Sympathetic tone summarizes the not precisely measurable and constantly changing state of excitation of the sympathetic nervous system. An increased sympathetic tone puts the body into a kind of reaction mode such as flight or attack. He makes

Ribonucleic acid synthesis is a prerequisite for protein synthesis. The ribonucleic acids transfer the genetic information from the DNA to the proteins. In some viruses, ribonucleic acids even represent the entire genome.

The osmotic erythrocyte resistance is a measure of how strongly the membranes that surround the erythrocytes withstand an osmotic pressure gradient. An osmotic partial pressure arises on the semipermeable membranes of the erythrocytes when they are released from

The cytotoxicity characterizes the degree of the toxic effect of chemical substances and living cells on the body cells. Their influence damages or even kills the human cell. There are many different processes involved

The osmotic pressure corresponds to the pressure that is present on the more highly concentrated side of a semipermeable or selectively permeable membrane in the solvent. The pressure drives the flow of the solvent through the membrane and gives its direction

Cell proliferation is a biological process in which the cell grows on the one hand and divides on the other. Cell division is also known as cytokinesis and completes the previous mitosis, the nucleus division. This

Mitosis takes place in several phases. The prophase represents the beginning of mitosis. Disturbances in the course of the prophase prevent the initiation of cell division.

The nuclear division (mitosis) of cells of eukaryotic organisms with replication of the DNA can be divided into four main phases. The second main phase is called the metaphase, in the course of which the chromosomes contract in a spiral and

The renin-angiotensin-aldosterone system controls the salt and water balance in the human body and also regulates blood pressure to a certain extent. Various organs, hormones and enzymes are involved in this control cycle.

Photopic vision describes normal color vision via the so-called M, L and S cones, which are photosensory optimized for the green, red and blue areas. Photopic vision sets a minimum brightness of about 3 to

In the legislation of the ancient Greek settlement of Sybaris (600 BC) we read: "Since the noises have an unfavorable effect on the nerves, no craft involving hammering may be practiced within the city walls

A gesture tells more than a thousand words, as the saying goes. Body language is the language of gestures, facial expressions and posture. It usually happens unconsciously and says a lot about us. Those who can correctly interpret non-verbal communication will find out

Memory takes on numerous tasks in everyday life. For example, it is used to differentiate and store information. However, some illnesses and ailments can limit the function of memory. Further consequences

Feelings are the result of various chemical messenger substances and hormones and control certain behavior in humans towards others. However, the sense of touch can also be meant. Actual feelings are not to be confused with complex ones

Visual acuity is the acuity with which a visual impression from the environment is reproduced on the retina of a living being and processed in its brain. Factors such as the receptor density, the size of the receptive field and the anatomy of the dioptric

Osteolysis is the process of breaking down bone. This usually takes place within the framework of normal metabolism. However, if the balance between bone loss and bone formation is disturbed, pathological loss can result

Human memory can be divided into different types. The short-term memory, which is of great importance for humans, is a type of it and is different from the long-term memory. Short-term memory is particularly important

The cardiac conduction system consists of glycogen-rich, specialized cardiac muscle cells. They bundle the contraction signals generated by the arousal system and direct them to the muscles of the atria in a specific rhythm

The vasomotor system includes all movement processes in the arteries and arterioles. These movements correspond to either a contraction or a relaxation of the vascular muscles and cause a change in the lumen of the vessels. Raynaud's syndrome patients