endocytosis

Excitatory Postsynaptic Potential: Function, Role & Diseases

The excitatory postsynaptic potential is an excitatory potential in the postsynaptic membrane of neurons. The individual potentials are summed spatially and temporally and can give rise to an action potential. Transmission disorders such as myasthenia gravis or other myasthenias disrupt these processes. What is the excitatory postsynaptic potential? The excitatory postsynaptic potential is an excitatory … Excitatory Postsynaptic Potential: Function, Role & Diseases

Endocytosis: Function, Role & Diseases

Endocytosis is the uptake of liquid or solid substances by a cell. In this process, phagocytosis is used by the cell to take up solid particles, whereas pinocytosis is used to internalize dissolved molecules. What is endocytosis? Endocytosis is the uptake of liquid or solid substances by a cell. Eukaryotic cells have a semipermeable cell … Endocytosis: Function, Role & Diseases

Lysosome: Function & Diseases

Lysosomes are organelles in the cells of living organisms with formed nuclei (eukaryotes). Lysosomes are vesicles of a cell that are enclosed by a membrane and contain digestive enzymes. The function of lysosomes, which are maintained in an acidic environment, is to break down endogenous and exogenous substances and to initiate cellular destruction (apoptosis) when … Lysosome: Function & Diseases

Eccrine Secretion: Function, Role & Diseases

Eccrine secretion is a mode of exocrine secretion, such as that followed in the salivary glands. Eccrine secretion is released via exocytosis without any cell loss. Overproduction or underproduction of eccrine secretions refers to various primary diseases. What is eccrine secretion? The large sweat glands in the genital and axillary areas also perform eccrine secretion. … Eccrine Secretion: Function, Role & Diseases

Pinocytosis: Function, Role & Diseases

The term pinocytosis derives from the Greek word “pinein,” which translates to the German verb “to drink,” and “kytos,” which means “cavity” or “cell.” Cells take up liquids (pinocytosis) and solids (phagocytosis) in the form of small vesicles from their surrounding medium. What is pinocytosis? Cells take up liquids (pinocytosis) and solids (phagocytosis) in the … Pinocytosis: Function, Role & Diseases

Transcytosis: Function, Role & Diseases

Transcytosis is a type of mass transfer in which a specific substance is taken up into the cell via endocytosis and released back into the extracellular space by exocytosis. Transcytosis is receptor-driven and occurs primarily in the epithelium of the intestine, at the blood–brain barrier, and in the placenta. The consequences of disruption of transcytosis … Transcytosis: Function, Role & Diseases

Membrane Flow: Function, Tasks, Role & Diseases

Membrane flux is the term used to summarize all processes of intercellular mass transport across the endomembrane system. This primarily includes endo-, exo-, and transcytosis, which allow cells to take up and release substances by displacing the membrane. Disruption of membrane flux can cause cell death (apoptosis). What is membrane flux? Membrane flux is the … Membrane Flow: Function, Tasks, Role & Diseases

Membrane Permeability: Function, Role & Diseases

Membrane permeability characterizes the permeability of molecules through cell membranes. All cells are demarcated from intercellular space by biomembranes and simultaneously contain cell organelles that are themselves surrounded by membranes. The permeability of membranes is necessary for the smooth flow of biochemical reactions. What is membrane permeability? Membrane permeability characterizes the permeability of molecules through … Membrane Permeability: Function, Role & Diseases

Membrane Transport: Function, Role & Diseases

In membrane transport, substances pass through a biological membrane or are actively transported through membranes. Unlike active transport, diffusion is the simplest membrane transport pathway and requires no additional provision of energy. Disorders of membrane transport are associated with a variety of different diseases. What is membrane transport? Membrane transport is when substances pass through … Membrane Transport: Function, Role & Diseases