Krperprozesse

Hyperpolarization is a biological process in which the membrane tension increases and exceeds the resting value. This mechanism is important for the function of muscle, nerve and sensory cells in the human body. Actions are possible through him

Repolarization is the regression of excitation in a cell that has previously built up an action potential through a stimulus. The resting membrane potential of the cell is restored.

The saltatory conduction of excitation ensures that the conduction speed of nerve tracts is sufficiently fast for vertebrates. Action potentials jump from one unisolated ring to the next on the isolated axons. For demyelinating diseases

Muscle tension refers to the state of tension in the muscles, also called "tone". This is caused by the stimuli of the nervous system and the elasticity of the tissue. The muscle tension can be divided into active and passive

The membrane permeability characterizes the permeability of molecules through the cell membrane. All cells are separated from the intercellular space by biomembranes and at the same time contain cell organelles that are in turn surrounded by membranes

All processes of intercellular substance transport via the endomembrane system are summarized as membrane flow. These include, above all, endocytosis, exocytosis and transcytosis, which allow the cells to absorb and release substances by shifting the membrane

Active substance transport is a form of transport of substrates through a biomembrane. Active transport takes place against a concentration or charge gradient and takes place with energy consumption. This process is disturbed in mitochondrial disease.

Passive mass transport is the diffusion of substrates through a biomembrane. This diffusion takes place along the concentration gradient and does not require any energy. The diffusion process can, for example, be disturbed in the intestines of HIV patients

Hydrolysis is the splitting of a chemical compound into smaller molecules with the absorption of water. Hydrolyses play an important role in the inorganic area as well as in biology. In living organisms takes place the hydrolytic

The growth is different from person to person and the increase in body length occurs continuously. Many factors play a role in growing. The growth can be divided into three phases. People don't always grow in a species-appropriate manner

In biology, the process of transcription includes the process of replicating a section of a DNA strand into a messenger RNA strand (mRNA). The mRNA then contains the nucleic base sequence which is complementary to the part of the DNA. The then

Everyone is plagued by nightmares sooner or later. Research is therefore increasingly devoted to this unpleasant phenomenon of the resting phases. However, they can also indicate existing ailments.

The cell cycle is a regularly occurring sequence of different phases in a body cell. The cell cycle always begins after the cell divides and ends when the next cell division is completed.

The entire cell cycle is controlled by a control system. At a cell cycle checkpoint, critical processes and phase transitions that take place within a cell cycle are regulated.

The appearance of an organism is called a phenotype. The phenotype is shaped both genetically and by the environment. Natural phenotypic changes in an organism are usually caused by environmental influences

Competitive inhibition is the inhibition of an enzyme or receptor by so-called antagonists or inhibitors. These are substances whose chemical structure is similar to the body's own substance that binds to the target structure

In the case of allosteric or non-competitive inhibition, inhibitors bind to the allosteric center of an enzyme and in this way reduce its activity. The bond results in a change in the conformation that affects the function

Life expectancy is calculated on a statistical basis and always relates to a population in the same geographical area with the same living conditions. It is determined using mortality tables. Besides, life expectancy is

The physician understands cell regeneration to be the body's own ability to reject irreparable cells and thus heal damaged tissue with the help of newly produced cells. This process takes place in the course of cell division

Reproduction is part of human and animal life and ensures the preservation of the species. Reproduction takes place when two people have a child together.