A fluid-filled blister more than 5 mm (about 3/16 inch) in diameter with thin walls. A bulla on the skin is a blister. A bulla on the pleura (the membrane covering the lung) is also called a bleb. In Latin a bulla was a "bubble, stud or knob." It referred to any rounded protrusion, particularly one that was hollow or cystic.
* * *
1. A fluid-filled blister greater than 100 cm in diameter appearing as a circumscribed area of separation of the epidermis from the subepidermal structure (subepidermal b.) or as a circumscribed area of separation of epidermal cells (intraepidermal b.) caused by the presence of serum, or occasionally by an injected substance. 2. [NA] A bubblelike structure. [L. bubble]
- ethmoidal b. [TA] a bulging of the inner wall of the ethmoidal labyrinth in the middle meatus of the nose, just below the middle nasal concha; it is regarded as a rudimentary concha. SYN: b. ethmoidalis [TA].
- b. ethmoidalis [TA] SYN: ethmoidal b..
- pulmonary b. air-filled emphysematous space larger than one centimeter, usually located in the lung periphery; can reach large diameter and cause symptoms by compression of normal lung tissue. Cf.:pulmonary bleb.

* * *

bul·la 'bu̇l-ə n, pl bul·lae 'bu̇l-.ē, -.ī
1) a hollow thin-walled rounded bony prominence
2) a large vesicle or blister compare BLEB

* * *

n. (pl. bullae)
1. a large blister, containing serous fluid.
2. (in anatomy) a rounded bony prominence.
3. a thin-walled air-filled space within the lung, arising congenitally or in emphysema. It may cause trouble by rupturing into the pleural space (see pneumothorax), by adding to the air that does not contribute to gas exchange, and/or by compressing the surrounding lung and making it inefficient.
bullous adj.

* * *

bul·la (bulґə) pl. bulґlae [L.] 1. a large blister; called also bleb. 2. in anatomy, a rounded, projecting structure. bullate, bullous adj


Medical dictionary. 2011.

Look at other dictionaries:

  • Bulla — ist der Name folgender Personen: Bulla (Felix) (Rebellenführer, um 200 n. Chr. in Italien) Carl Oswald Bulla (1855–1929), Fotograf; gilt als Gründer der russischer Fotoreportage Gisela Bulla (* 1932), Autorin und Politikerin Hans Georg Bulla (*… …   Deutsch Wikipedia

  • Bulla — may refer to: In geography *Bulla, Victoria, a town in Australia *Bulla Island, an island in the Caspian Sea In science and nature * Bulla (genus), a group of marine snails *Bulla (plural bullae ), the medical term for a large blister In… …   Wikipedia

  • bulla — sustantivo femenino 1. (no contable) Ruido y confusión de voces, gritos y risas: No metáis tanta bulla. ¡Que no armen bulla! A ver si con tanta bulla se despierta el niño. Sinónimo: jaleo. 2. Reunión desordenada de mucha gente: Había una bulla… …   Diccionario Salamanca de la Lengua Española

  • Bulla — Bul la, n.; pl. {Bull[ae]}. [L. bulla bubble. See {Bull} an edict.] 1. (Med.) A bleb; a vesicle, or an elevation of the cuticle, containing a transparent watery fluid. [1913 Webster] 2. (Anat.) The ovoid prominence below the opening of the ear in …   The Collaborative International Dictionary of English

  • Bulla [1] — Bulla, 1) (röm. Ant.), goldene runde od. halbmondförmige, nach Andern herzförmige Kapsel mit Amuletten; bei den Etruskern Ehrenzeichen der Könige u. Lukumonen, bei den Römern, nebst der Toga praetexta, Auszeichnung früher der Rittersöhne, nachher …   Pierer's Universal-Lexikon

  • bulla — f. anat. Vesícula de gran dimensión repleta de líquido seroso, inflamatorio o serohemorrágico que se sitúa entre las capas cutáneas. Medical Dictionary. 2011 …   Diccionario médico

  • bulla — 1876, from L. bulla (pl. bullae), lit. bubble (see BULL (Cf. bull) (2)) …   Etymology dictionary

  • bulla — (De bullir). 1. f. Gritería o ruido que hacen una o más personas. 2. Concurrencia de mucha gente. 3. And. Prisa, apresuramiento. meter a bulla. fr. coloq. p. us. Impedir que se prosiga en un asunto, introduciendo muchas especies extrañas …   Diccionario de la lengua española

  • Bulla [2] — Bulla, so v.w. Blasenschnecke …   Pierer's Universal-Lexikon

  • Bulla — (lat., »Kapsel«), bei den alten Römern eine runde oder herzförmige Kapsel, die ein Amulett enthielt, und die zur Abwehrung bösen Zaubers von den Knaben bis zur Annahme der männlichen Toga, von den Mädchen bis zur Verheiratung am Hals getragen… …   Meyers Großes Konversations-Lexikon

  • Bulla — (lat.), s. Bulle. Bullarĭum, Sammlung von päpstl. Bullen …   Kleines Konversations-Lexikon

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.