
	Where results make sense

Topic: Alveolar sac

Related Topics

alveolar consonant

alveolar ridge

voiceless alveolar fricative

alveolar trill

alveolar flap

voiced alveolar fricative

voiceless alveolar plosive

lateral alveolar approximant

voiced alveolar plosive

alveolar nasal

lateral voiced alveolar fricative

alveolar approximant

In the News (Mon 13 Feb 12)

EXECUTIVE POWER

Iran

ANALYSIS

Pakistan

Family compact

	XI. Splanchnology. 1e. The Lungs. Gray, Henry. 1918. Anatomy of the Human Body.
		The primary lobule consists of an alveolar duct, the air spaces connected with it and their bloodvessels, lymphatics and nerves.
		Each alveolar duct is connected with a variable number of irregularly spherical spaces, which also possess alveoli, the atria.
		With each atrium a variable number (2–5) of alveolar sacs are connected which bear on all parts of their circumference alveoli or air sacs.
	bartleby.com /107/240.html (2952 words)

	Histology IJS (1)
		Alveolar sacs are collections of alveoli which arise from a short alveolar duct.
		The alveolar duct is the terminal division of a respiratory bronchiole.
		The alveolar walls are shared with either a neighbouring alveolus arising from the same alveolar duct or with an alveolus of an adjacent alveolar sac.
	www.abdn.ac.uk /~bms027/TH1.H2.4.html (199 words)

	[No title]
		Alveolar Ducts: These are simply the distal extensions of the respiratory bronchioles where the alveoli are so dense that the wall consists almost entirely of these sacs, and the lining has been reduced to small knobs of smooth muscle covered by cilia-free simple cuboidal cells.
		Atria and Alveolar Sacs: Atria are the distal terminations of alveolar ducts.
		Put simply, the difference between atria and alveolar sacs is that the atria open into alveolar ducts, alveoli, and alveolar sacs, while the alveolar sacs open only into alveoli and atria.
	www.loyno.edu /~chood/histnotesresp.html (4258 words)

	Alveolus (Site not responding. Last check: 2007-10-31)
		The alveolar carbon dioxide pressure is higher because carbon dioxide enters the alveoli from the pulmonary capillaries.
		Infant respiratory distress syndrome (IRDS) is a syndrome caused by lack of surfactant in the lungs of premature infants.
		In asthma, the bronchioles, or the "bottle-necks" into the sac are restricted causing the amount of air flow into the lungs to be greatly reduced.
	alveolus.area51.ipupdater.com (1190 words)

	RSPT 1207 lecture on lower airways
		Each alveolar duct containing 10- 16 alveoli terminates into the blind end of an Alveolar sac that is a cluster of 16-20 single alveoli.
		The wide disparity between the gas diffuse which occurs in the alveolar duct verses that done in the sac is secondary to the difference between the surface area available for gas exchange found in the alveolar sac.
		Interstitium between the alveolar wall and the capillary wall is the "tight" space.
	kcweb.nhmccd.edu /programs/respcare/1207low.html (6090 words)

	The Respiratory System
		It consists of respiratory bronchioles, alveolar ducts and alveolar sacs.
		Other alveolar sacs can be seen in the surrounding tissue, one (at left) is labelled as such.
		When you look at the alveolar septa, you will be able to identify (some of the) type II cells, capillaries if well-sectioned, and (if they are filled with carbon particles or some other material) dust cells.
	courseweb.edteched.uottawa.ca /medicine-histology/English/Respiratory/Default.htm (4511 words)

	Respiratory System
		There, in the thousands of tiny alveolar chambers, oxygen is transferred through the membrane of the alveolar walls to the blood cells in the capillaries within.
		The right and left lung are each enclosed in a pleural sac and are separated by the mediastinum, a membrane which extends from the vertebral column in back to the sternum in front.
		The parietal pleura is the exterior layer of this pulmonary pleural sac, which connects to the thorax wall, the mediastinal membrane, and the diaphragm muscle.
	thefitnessfirm.freehosting.net /respirat1.htm (2182 words)

	The Lungs
		Two types of cells in the alveolar epithelium are type I pneumocytes (squamous epithelial cells) and type II (cuboidal cells that synthesize surfactant that is secreted onto the alveolar luminal surface to reduce surface tension).
		The round spaces with a variety of radiating projections form alveolar sacs and the compartments formed by the respective projections are called alveoli.
		If it looks like a sac, like the ones in the image do, than you can safely call it an alveolar sac, but if it look like it has several sacs along it, it is probably a Alveolar duct.
	www3.umdnj.edu /histsweb/lab10/lab10lung.html (863 words)

	Histology-World! Histology Test Bank-Respiratory 3a
		At the end of the alveoli duct is an alveoli sac.
		An alveoli sac is a cluster of alveoli, much like a cluster of grapes.
		Alveoli are individual sacs where gas exchange occurs.
	www.histology-world.com /testbank/resp3a.htm (735 words)

	Dictionary of Medical Derivations by Bill Casselman sample words "sac" and "aneurysm"
		In anatomy, a sac is a pouch or bag-like part of a structure or organ.
		The outer one is the chorion or chorionic sac.
		Each pouchlike alveolar sac, also called an air sac, is connected by a small duct to a bronchiole.
	www.billcasselman.com /dictionary_of_medical_derivations/dmd_eight.htm (507 words)

	LUNG ALVEOLI
		Protruding from the thin walls of the alveolar ducts and respiratory bronchioles are numerous cup-shaped alveoli, each measuring about 0.2 to 0.5 mm in diameter.
		When two or more alveoli share a common opening to an alveolar duct, they are referred to as an alveolar sac.
		About 95% of the alveolar surface consists of simple squamous epithelial type I cells, and the remaining 5% is occupied by type II cells (or septal cells).
	www.getbodysmart.com /ap/respiratorysystem/lungs/alveoli/animation.html (243 words)

	Microdomain Arrangement of the SERCA-type Ca2+ Pump (Ca2+-ATPase) in Subplasmalemmal Calcium Stores of Paramecium Cells ...
		alveolar sac membrane region and the cell membrane.
		Inner and outer regions of membrane of alveolar sacs (IM-AS, OM-AS) are the regions facing the inside or the outside of the cell, respectively.
		Immunogold labeling of alveolar sacs on ultrathin cryosections using anti-SERCA 3 Abs and pA-Au Note presence of label predominantly on the IM-AS region (particularly in a tangentially cut region at asterisk) and absence from extracellular regions, cilium (CI), alveolar sac lumen, and particularly from the OM-AS/cell membrane (CM) complex.
	www.jhc.org /cgi/content/full/47/7/841 (5048 words)

	Lab Exercises-Lung
		In this photograph, the alveoli are arranged in a long duct and then they expand to form an alveolar sac.
		The Type I alveolar cells are the extremely thin (0.2 microns) squamous cells.
		Identify terminal and respiratory bronchioles, alveolar ducts and alveolar sacs.
	www.cytochemistry.net /microanatomy/respiratory/lung.htm (735 words)

	Alveoli:
		Gases that reach equilibrium before the blood leaves the alveolar capillaries are 'perfusion limited', since the amount of the gas exchanged depends solely on the volumetric flow rate of blood past the alveoli.
		The rest of the difference is due to the continual uptake of oxygen by the pulmonary capillaries, and the continual diffusion of CO out of the capillaries into the alveoli.
		The magnitude of the difference between the alveolar PO and arterial PO can be used to detect the presence of certain lung diseases.
	www.winelib.com /wiki/Alveoli (1511 words)

	General Biology 2, Respiration in Vertebrates with Lungs
		The walls of the alveolar sacs are composed of highly vascularized, semicircular outpocketing called alveoli.
		Carbon dioxide diffuses in the reverse direction and enters the alveolar sac for elimination from the lungs.
		The air sacs act like bellows to for movement of air in and out of the lung and are not directly involved in gas exchange.
	www.usd.edu /biol/genbio/153/ken/kr6.html (1062 words)

	Mammalian Lung TEM (Site not responding. Last check: 2007-10-31)
		Transmission electron microscope image of a thin section cut through the alveolar sac region of the lung(mouse).
		The alveolar cell shown has vesicles which contain surfactant, a macroaggregate of phosolipids and proteins which help with breathing.
		The surfactant is released by exocytosis and forms a thin monolayer on the wall of the alveoli.
	remf.dartmouth.edu /images/mammalianLungTEM/source/14.html (115 words)

	Alveoli
		The alveoli are the final branchings of the respiratory tree and act as the primary gas exchange units of the lung.
		The gas-blood barrier between the alveolar space and the pulmonary...
		Protruding from the thin walls of the alveolar ducts and respiratory bronchioles are numerous cup...
	www.logicjungle.com /wiki/Alveoli (278 words)

	Blood Gas Text
		Air is drawn into the air sacs of the lungs, where oxygen from the air can enter the blood.
		At the alveolar membrane, each gas diffuses in the direction where the partial pressure of that gas is less.
		The deep rapid breathing mixes alveolar air with increased amounts of low-CO2 air, leading to a decrease in the carbon dioxide in the blood as it passes by the alveolus.
	www.madsci.com /manu/gas_gas.htm (2322 words)

	Laboratory Ten: Respiratory System
		Understand the structure and function of the alveolar wall, (as seen in the light and electron microscopes), with special emphasis on the air-blood barrier, surfactant producing cells, and distribution of connective tissue fibers.
		Identify the respiratory portion of the bronchial tree (formed by respiratory bronchioles, alveolar ducts, alveolar sacs, and alveoli).
		This is a good slide for observing the distribution of collagen near the visceral pleura, alveolar wall, and branches of the bronchial tree.
	medinfo.ufl.edu /year1/histo/review/lab10.html (1494 words)

	Pulmonary Function -- Recommendations and Resources (Site not responding. Last check: 2007-10-31)
		Type II cells that secrete surfactant to lower the surface tension The alveoli have an innate tendency to collapse because of their spherical shape, small size, and surface tension.
		During labor, early respiratory movements facilitate filling of alveolar ducts and alveolar lumens with elements of amniotic fluid: amniotic cells, squames and squamous cells from fetal skin, lanugo, meconium.
		The diagnosis is confirmed on X-ray of the lungs, which shows increased vascular filling and fluid in the alveolar walls.
	www.becomingapediatrician.com /health/123/pulmonary-function.html (1031 words)

	Demonstrations
		Alveolar ducts are the passages which lead into clusters of alveoli called alveolar sacs (pointer).
		These alveolar sacs make up by far the greatest part of the lung and have a major role in the exchange of O2 and CO2.
		One major difference is the presence of concretions in alveolar ducts of the prostate (pointer), which are solidified accumulations of prostatic secretion.
	neuromedia.neurobio.ucla.edu /campbell/demonstrations.html (12210 words)

	[No title]
		Pleural Sacs Enclose the Lungs Lungs are light, spongy tissue mostly occupied by air-filled spaces..
		In some pathologies, there may also be alveolar dead space, that is, alveoli that are being ventilated but not being perfused.
		Alveolar ventilation is more accurate indicator of ventilation efficiency.
	www.miramar.sdccd.cc.ca.us /faculty/mmcmahon/docs/physam/LecResp.doc (3691 words)

	Turkish Respiratory Journal
		A total number of 100 cells were counted in each BAL fluid sample and the percentage of neutrophils and alveolar macrophages were calculated [2].
		Examination of the samples prepared from the right lung included examinations of the alveolar septa, alveolar sac, bronchioles, extraparenchymal tissues (nerve, blood vessels, connective tissue) and pleura.
		Alveolitis was seen in the alveolar septa in all groups which had received anaesthesia, but was more notable in the chemotherapy applied groups.
	www.turkishrespiratoryjournal.com /text.php3?id=275 (2274 words)

	Opposing views on the alveolar surface, alveolar models, and the role of surfactant -- Scarpelli and Hills 89 (2): 408 ...
		Schematic drawings of part of the alveolar surface network that is in an alveolar sac (A) and details of foam films with surfactant molecules at gas interfaces (cell surface molecules not shown) (B-E).
		Continuous channels of alveolar surface liquid (thickness exaggerated in drawing, e.g., see [3]) extend to the other sacs and ducts of the acinus.
		Alveolar lining layer is thin and continuous: low-temperature scanning electron microscopy.
	jap.physiology.org /cgi/content/full/89/2/408 (3337 words)

	[No title]
		Confluent with respiratory bronchiole by means of alveolar duct and alveolar sac
		Alveolar ducts - airways with alveoli as peripheral boundary
		Occasional alveolar macrophages may be seen on alveolar surfaces or within the
	www.urmc.rochester.edu /smded/Histology/Manuals/Respiratory.html (817 words)

	Histology-World! Histology Test Bank-Respiratory 2a
		The respiratory portion of the airway is where gas exchange occurs.
		The respiratory bronchioles, alveolar ducts, alveolar sacs and alveoli are all part of the respiratory portion.
		The pharynx is lined by both stratified squamous epithelium and ciliated pseudostratified epithelium with goblet cells.
	www.histology-world.com /testbank/resp2a.htm (641 words)

	Respiratory Physiologu: Gas Exchange (Site not responding. Last check: 2007-10-31)
		DIFFUSION: All gases move across the alveolar wall according to the principle of simple diffusion: gas moves from areas of higher concentration to lower concentration.
		The rate of diffusion across the membrane is directly proportional to the partial pressure gradient (the primary factor influencing gas exchange) and most rapid over short distances.
		Normal alveolar PO2 is 100 mm Hg, whereas PO2 of systemic venous blood is 40 mm Hg.
	www.healthsystem.virginia.edu /Internet/Anesthesiology-Elective/airway/gasexchange.cfm (567 words)

	[No title] (Site not responding. Last check: 2007-10-31)
		Type II alveolar cells appear between 20-25 wk and start producing surfactant between 24-25 wk; however, normal intra-airway concentrations are not reached until approximately 34 wk.
		A constant flow of this fluid is secreted into the alveolar spaces throughout development, which contributes to the fetal amniotic fluid.
		Gastroschisis is an abdominal wall defect lateral to the umbilicus that does not have a sac or membrane covering the bowel.
	www.medceu.com /course-no-test.cfm?CID=973 (11792 words)

	pores of Kohn - General Practice Notebook (Site not responding. Last check: 2007-10-31)
		Pores of Kohn are channels running between two adjacent alveoli across the alveolar wall within a lobule of the lung.
		They are distinct from the connections alveoli make with each other by their common opening onto one alveolar sac or alveolar duct; in these cases, the alveolar wall is not breached.
		Oxbridge Solutions Ltd® is an independent company owned by the authors which does not receive income from any other organisation or individual.
	www.gpnotebook.co.uk /cache/-563412933.htm (171 words)

Try your search on: Qwika (all wikis)