alveolus


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Related to alveolus: respiratory system, alveoli

alveolus

 [al-ve´o-lus] (pl. alve´oli) (L.)
a little hollow, as the socket of a tooth, a follicle of an acinous gland, or a pulmonary alveolus. adj., adj alve´olar.
dental alveoli the cavities or sockets of either jaw, in which the roots of the teeth are embedded.
pulmonary alveoli small outpouchings along the walls of the alveolar sacs and alveolar ducts; through them, gas exchange takes place between alveolar gas and pulmonary capillary blood.

al·ve·o·lus

, gen. and pl.

al·ve·o·li

(al-vē'ō-lŭs, -ō-lī), Avoid the mispronunciation alveo'lus. A small cell, cavity, or socket.
1. Synonym(s): pulmonary alveolus
2. One of the terminal secretory portions of an alveolar or racemose gland.
3. One of the honeycomb pits in the wall of the stomach.
4. Synonym(s): tooth socket
[L. dim. of alveus, trough, hollow sac, cavity]

alveolus

/al·ve·o·lus/ (al-ve´o-lus) pl. alve´oli   [L.] a small saclike dilatation; see also acinus.
dental alveolus  one of the cavities or sockets of the jaw, in which the roots of the teeth are embedded.
pulmonary alveoli  small outpocketings of the alveolar ducts and sacs and terminal bronchioles through whose walls the exchange of carbon dioxide and oxygen takes place between the alveolar air and capillary blood.

alveolus

(ăl-vē′ə-ləs)
n. pl. alveo·li (-lī′)
1. A small angular cavity or pit, such as a honeycomb cell.
2. A tooth socket in the jawbone.
3. A tiny, thin-walled, capillary-rich sac in the lungs where the exchange of oxygen and carbon dioxide takes place. Also called air sac.

alveolus

[alvē′ələs] pl. alveoli
Etymology: L, alveolus, little hollow
1 a small outpouching along the walls of the alveolar sacs through which gas exchange between alveolar air and pulmonary capillary blood takes place. Also called acinus, pulmonary alveolus.
2 a tooth socket. See also dental alveolus. alveolar, adj.
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Alveoli

alveolus

A hollow cavity that is an outpouching of the respiratory bronchioles and the alveolar ducts; there are an estimated 150 million alveoli, which are the primary site of gas exchange between the blood and environment, covering a surface area of 75m2. Alveoli are lined by type-1 (squamous) alveolar cells, type-2 (great) alveolar cells, the latter of which secrete surfactant and macrophages.

al·ve·o·lus

(al-vē'ō-lŭs, -lī) [TA]
1. Synonym(s): pulmonary alveoli.
2. One of the terminal secretory portions of an alveolar or racemose gland.
3. One of the honeycomb pits in the wall of the stomach.
4. Synonym(s): tooth socket.
[L. dim. of alveus, trough, hollow sac, cavity]

alveolus

(al-ve'o-lus ) (al-ve'o-li?, -le?) plural.alveoli [L. alveolus, small hollow, cavity]
1. A small hollow.
2. The bony socket of a tooth.
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ALVEOLUS OF LUNGS
3. An air sac of the lungs. See: illustration
4. Any of the honeycombed depressions of the gastric mucous membrane.
5. A follicle of a racemose gland.

alveoli of the breast

Glandular structures arranged in clusters throughout the breast and the site of milk synthesis.

alveolus dentalis

A tooth socket.

pulmonary alveolus

Any of the terminal epithelial sacs of an alveolar duct where gases are exchanged in respiration. It is informally called an “air sac.” Synonym: alveolar sac

alveoli pulmonis

Pulmonary alveoli.

alveolus

1. One of the many million tiny, thin-walled, air sacs in the lungs.
2. A tooth socket in the jaw bone.
3. Any small cavity or sac.

alveolus

(pl. alveoli)
  1. a small air-filled sac which occurs in large numbers in the LUNGS of vertebrates and whose function is to increase surface area for gaseous exchange (see AERIAL RESPIRATION).
  2. groups of secretory cells found at the internal ends of ducts of mammary and other glands.
  3. an inflated area of the follicle which surrounds the depressions from which cilia (see CILIUM arise in some ciliates, e.g. Paramecium.
  4. a tooth cavity in the jaw bone.

Alveolus (plural alveoli)

The terminal air sacs of the lungs where gas exchange occurs.
Mentioned in: Surfactant

al·ve·o·lus

(al-vē'ō-lŭs, -lī) [TA]
1. Synonym(s): tooth socket.
2. A small cell, cavity, or socket.
[L. dim. of alveus, trough, hollow sac, cavity]

alveolus (alvē´əlus),

n 1. an air sac of the lungs formed by terminal dilations of the bronchioles.
n 2. the socket in the bone in which a tooth is attached by means of the periodontal ligament.

alveolus

pl. alveoli.
1. a small cavity.
2. one of the thousands of tiny sacs borne on the terminal parts of the bronchial tree.
3. a tooth socket.
4. the dilated saclike part of the secretory unit of an alveolar gland such as a lactating mammary gland.
See also alveolar.

mammary alveolus
because its epithelia produce milk the alveolus is the basic functioning unit of the lactating mammary gland.
References in periodicals archive ?
The announcement of the Thoracic Medical Advisory Board is especially poignant with the latest FDA submission by Alveolus for its esophageal stent product.
This new advancement in stent technology further validates Alveolus as an innovator in the rapidly growing non-vascular stent market," stated Eric Mangiardi, President & CEO of Alveolus.
We are pleased with the EU's approval of the Alveolus Stent Technology System (STS)," said Eric K.
Through its contracted advisory board of gastroenterologists, Alveolus will design the next generation of stent technology and delivery device applications in the emerging field of non-vascular stenting.
Alveolus was created to develop advanced stenting technology to address these areas of the body and improve the quality of life for those patients suffering from lumen obstruction.
Alveolus is developing and marketing a next-generation stent for use in the lungs.
collacone[R] max is an innovative, biomimetic composite cone designed for socket preservation, which supports the osseous regeneration of the alveolus and prevents soft tissue collapse.
The answer lies in examples such as the relationships between villus structure and nutrient absorption in the small intestine (Figure 1), nephron structure and water retention in the kidneys (Figure 2), alveolus structure and gas exchange in the lungs (Figure 3), root-hair structure and nutrient absorption in plants, leaf ventation and nutrient transport (Figure 4), and any other function in which surface area is key to life support.
Alveolus produces stents for esophageal, tracheobronchial, and biliary stenting procedures.
The Food and Drug Administration staff reminded a "wide breadth" of companies that make bile-duct stents of the agency's marketing rules, said Eric Mangiardi, president of stent maker Alveolus Inc.
This product launch is yet another piece of our existing product portfolio growth initiative and demonstrates Alveolus' continued commitment to developing novel products specifically for non-vascular interventions," said Eric Mangiardi, president and chief executive officer of Alveolus.
Intranasal tooth as a complication of cleft lip and alveolus in a four year old child: Case report and literature review.