vesicle
/'vesikl/
Definition
Noun: 1. A small sac or bladder-like structure, especially one containing fluid: In anatomy and biology, a vesicle is a small, membrane-bound sac within a cell or organism, typically used for storage or transport of substances. 2. A small blister or fluid-filled elevation on the skin: In medicine and dermatology, a vesicle is a small, circumscribed elevation of the skin containing serous fluid. 3. A small cavity in a rock, formed by the expansion of gas: In geology, a vesicle is a small, rounded cavity within a volcanic rock, formed by the expansion of a gas bubble during solidification.
Examples of Usage
- The cell uses a vesicle to transport proteins from the Golgi apparatus to the cell membrane.
- The rash was characterized by numerous small, clear vesicles.
- The basaltic lava rock is highly vesicular, containing many gas vesicles.
Advanced Usage
- "To form a vesicle": The process by which a membrane pinches off to create a small sac.
- During endocytosis, the cell membrane invaginates to form a vesicle around the external material.
- "Vesicular transport": The cellular process of moving materials within vesicles.
- Intracellular cargo is moved via vesicular transport along the cytoskeleton.
Variants and Related Words
- Vesicular (adj): Of, relating to, or characterized by vesicles; having the form or structure of a vesicle.
- The doctor noted the vesicular nature of the rash.
- Pumice is a vesicular volcanic rock.
- Vesiculate (v): To form or become vesicular; to make into vesicles.
- The heat caused the material to vesiculate.
Synonyms
- Blister: Specifically for a skin vesicle.
- Sac: A more general term for a pouch or bag-like structure.
- Cyst: A closed sac that may contain fluid, but is typically larger or pathological.
- Bulla: A large vesicle (in dermatology).
Related Phrases
- Seminal vesicle: (Anatomy) One of a pair of glandular sacs that secrete a component of semen.
- The seminal vesicles contribute fructose to the seminal fluid.
- Synaptic vesicle: (Neurobiology) A small vesicle in the presynaptic neuron that contains neurotransmitters.
- Neurotransmitters are released from synaptic vesicles into the synaptic cleft.
Noun
-
a small anatomically normal sac or bladderlike structure (especially one containing fluid)
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