cisterna
Học thuậtThân thiện
Definition
- Noun:
- A sac or cavity containing fluid, especially lymph or cerebrospinal fluid: In biology and anatomy, a 'cisterna' refers to a membrane-bound, fluid-filled space or compartment within a cell or body.
Usage
- The term is primarily used in scientific and medical contexts, specifically in cell biology, neurology, and anatomy.
- It describes specific anatomical structures, such as the cisternae within the endoplasmic reticulum of a cell or the subarachnoid cisterns in the brain.
Examples
- Noun:
- The Golgi apparatus is composed of a stack of flattened membrane sacs called cisternae.
- Cerebrospinal fluid is stored in the cisterna magna, a large space at the base of the brain.
Advanced Usage
- "Subarachnoid cistern": A space within the subarachnoid layer of the meninges where cerebrospinal fluid accumulates.
- The lumbar puncture needle is often guided into a subarachnoid cistern.
- "Golgi cisterna": One of the flattened, pouch-like membranes that make up the Golgi apparatus.
- Proteins are modified as they move from one Golgi cisterna to the next.
Variants and Related Words
- Cisternal (adj): Pertaining to or of the nature of a cisterna.
- The cisternal puncture is a diagnostic procedure.
- Cisternae (n, plural): The plural form of 'cisterna'.
- The endoplasmic reticulum is a network of tubules and cisternae.
Synonyms
- Sac: A general term for a pouch or bag-like structure in an animal or plant, often containing fluid.
- Reservoir: A place where fluid collects, especially in a biological context.
- Cavity: An empty space within a solid object, which can contain fluid.
Notes
- The word is of Latin origin, meaning 'box' or 'cistern'.
- It is a specialized term rarely used in everyday conversation but is fundamental in scientific descriptions of cellular and anatomical structures.
Noun
- a sac or cavity containing fluid especially lymph or cerebrospinal fluid