Cupula
Cupula
Cupula (pronounced: /ˈkjuːpjʊlə/) is a term used in various fields of medicine, particularly in anatomy and physiology.
Etymology
The term "cupula" is derived from the Latin word "cupula", which means "a small cup". It is used to describe structures in the body that are dome-shaped or cup-like.
Anatomy
In anatomy, the term "cupula" is used to refer to a part of the inner ear known as the crista ampullaris. The crista ampullaris is a sensory organ in the semicircular canals of the inner ear that detects rotational movements of the head. The cupula is a gelatinous dome-shaped structure that sits on top of the crista ampullaris. It plays a crucial role in the sense of balance and spatial orientation.
Physiology
In physiology, the term "cupula" is used to describe a similar structure in the respiratory system. The pleural cupula is an extension of the pleural cavity that extends into the root of the neck, above the level of the first rib. It is covered by a layer of parietal pleura.
Related Terms
- Crista ampullaris: A sensory organ in the semicircular canals of the inner ear that detects rotational movements of the head.
- Semicircular canals: Three fluid-filled tubes in the inner ear that play a key role in maintaining balance.
- Pleural cavity: The potential space between the two layers of pleura (the visceral and parietal pleura) that surround each lung.
- Parietal pleura: The outer layer of the pleura that lines the inside of the chest wall and diaphragm.
External links
- Medical encyclopedia article on Cupula
- Wikipedia's article - Cupula
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