SECRETORY VESICLES Meaning and
Definition
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Secretory vesicles are membrane-bound sacs or compartments found within cells that contain various substances for release from the cell. These vesicles are primarily involved in the process of exocytosis, which is the mechanism through which cells secrete molecules such as proteins, hormones, neurotransmitters, and enzymes into the extracellular space.
Secretory vesicles are formed through a complex process of membrane budding and trafficking within the cell's endomembrane system. Initially, these vesicles are either derived from the Golgi apparatus or endosomes. They then undergo maturation and accumulate specific cargo molecules, depending on the type of cell they are present in. The cargo molecules can be synthesized within the cell or can be taken up from the extracellular environment.
Once the secretory vesicles are fully loaded, they are transported to the plasma membrane where they fuse and release their contents into the extracellular space. This fusion process is facilitated by various proteins present on the vesicle and plasma membrane, including SNARE proteins.
The secretion of molecules from secretory vesicles plays a critical role in numerous physiological processes, including cell signaling, immune response, digestion, nerve transmission, and hormonal regulation. Malfunctioning secretory vesicles can result in various diseases and disorders, such as diabetes, neurodegenerative diseases, and endocrine disorders.
In summary, secretory vesicles are specialized compartments within cells that store and transport specific molecules for secretion. They are essential for the proper functioning of cells and play a crucial role in maintaining overall organismal homeostasis.
Common Misspellings for SECRETORY VESICLES
- aecretory vesicles
- zecretory vesicles
- xecretory vesicles
- decretory vesicles
- eecretory vesicles
- wecretory vesicles
- swcretory vesicles
- sscretory vesicles
- sdcretory vesicles
- srcretory vesicles
- s4cretory vesicles
- s3cretory vesicles
- sexretory vesicles
- sevretory vesicles
- sefretory vesicles
- sedretory vesicles
- seceetory vesicles
- secdetory vesicles
- secfetory vesicles
- sectetory vesicles
Etymology of SECRETORY VESICLES
The etymology of the word "secretory vesicles" can be explained as follows:
1. Secretory: The term "secretory" comes from the Latin word "secretus", meaning "to set apart" or "to keep separate". In English, it is primarily used to refer to the process of releasing or producing a secretion, which could be a substance produced by cells and used elsewhere in the body.
2. Vesicles: The word "vesicles" originates from the Latin term "vesicula", meaning "small bladder" or "little bag". In biology, vesicles often refer to small membrane-bound sacs or pouches found within cells that are involved in various cellular processes, such as the storage, transport, or release of substances.
