Essays Tagged: "alveoli"

An essay on the mechanism of breathing and its control.

ase in intrapulmonary pressure. A pressure gradient is therefore established from the atmosphere to alveoli, hence air being suck into the lower pressure in the lungs called inspiration or breathing i ... of the thorax leads to an increase intrapulmonary pressure. A pressure gradient is established from alveoli to atmosphere, with air being pushed out to the atmosphere into the lower pressure. We call ...

(4 pages) 87 0 4.4 Jan/2003

Subjects: Science Essays > Biology > Human Biology

Biochemical warfare

chemical travels through the respiratory tract, from the mucosam of the nose and mouth down to the alveoli and begins to damage the lungs". Another way chemicals affect the human body is, they can be ...

(5 pages) 67 0 3.4 Feb/2003

Subjects: Law & Government Essays > Military & International Conflicts & Security

Pollution

es. The damage begins when the particulates are inhaled into the small air sacs of our lungs called alveoli. The particulate causes the inflation of the alveoli, which causes the body to produce agent ...

(7 pages) 93 0 5.0 Apr/2003

Subjects: Science Essays > Earth Sciences > Geography

Lung Cancer.

ubes to carry air through the lungs into the bloodstream. All the carbon dioxide then passed to the alveoli tubes and then is breathed out by the lungs. But you have a hard time doing this if you have ...

(2 pages) 33 1 5.0 Oct/2005

Subjects: Humanities Essays > Health & Medicine > Diseases

Breathing in Humans.

tercostals muscles pull up the ribs to expand the rib cage and further increasing the volume of the alveoli (Blake, 2001). The increase of volume in the alveoli lowers the air pressure below the atmos ... region of lower pressure. Because of this the air rushes in through the respiratory system into the alveoli (Blake, 2001). In contrast to inspiration, during expiration the diaphragm and intercostals ...

(2 pages) 18 0 0.0 Nov/2005

Subjects: Science Essays > Biology > Human Biology

Emphysema

Emphysema Human lungs contain 300 million alveoli, or tiny elastic air sacs, through which oxygen is added to the blood and carbon dioxide is ... lastic air sacs, through which oxygen is added to the blood and carbon dioxide is removed. When the alveoli lose their natural elasticity, become overstretched, or rupture, emphysema may occur. Severa ... e their natural elasticity, become overstretched, or rupture, emphysema may occur. Several adjacent alveoli may rupture, forming one large air sac that is less able to exchange oxygen and carbon dioxi ...

(3 pages) 29 0 0.0 Mar/2002

Subjects: Humanities Essays > Health & Medicine > Diseases

Untitled

nervation controls constriction and dilation of bronchioles Alveolar ducts open to alveolar sacs to alveoli made of simple squamous epith. 150 million Alveolar macrophages- engulfing dust and particle ... n Alveolar macrophages- engulfing dust and particles- surfactant reduces surface tension within the alveoli to keep them inflated in exhal Squamous epith of a- basement mem- endoth cap Lungs- right 3 ...

(2 pages) 535 0 0.0 Feb/2008

Subjects: Science Essays > Biology > Human Biology

How the Heart Works

, and some blood goes into the right lung.The oxygen and carbon dioxide exchange takes place in the alveoli. Alveoli are little sacs at the end of the bronchial tubes. Each alveolus is served by tiny ...

(2 pages) 21 0 5.0 Feb/2008

Subjects: Science Essays > Biology > Human Biology

Human Body

dpipe. The lower section includes the lungs and two structures within the lungs the bronchi and the alveoli. The two lungs are the main organs of breathing. Lungs are elastic bodies one on each side o ... elastic bodies one on each side of the heart. They are filled with millions of tiny air sacs called alveoli. The alveoli are at the end of the bronchi. The diaphragm is an important part to breathing. ...

(2 pages) 44 0 4.0 Feb/2008

Subjects: Humanities Essays > Health & Medicine > Diseases

Human Body

dpipe. The lower section includes the lungs and two structures within the lungs the bronchi and the alveoli. The two lungs are the main organs of breathing. Lungs are elastic bodies one on each side o ... elastic bodies one on each side of the heart. They are filled with millions of tiny air sacs called alveoli. The alveoli are at the end of the bronchi. The diaphragm is an important part to breathing. ...

(2 pages) 19 0 5.0 Feb/2008

Subjects: Humanities Essays > Health & Medicine > Diseases

Human Body

dpipe. The lower section includes the lungs and two structures within the lungs the bronchi and the alveoli. The two lungs are the main organs of breathing. Lungs are elastic bodies one on each side o ... elastic bodies one on each side of the heart. They are filled with millions of tiny air sacs called alveoli. The alveoli are at the end of the bronchi. The diaphragm is an important part to breathing. ...

(2 pages) 19 0 0.0 Feb/2008

Subjects: Humanities Essays > Health & Medicine > Diseases

Fawzy

lly. However, they were found to inhibit proliferation of lung cells and to impair formation of new alveoli, suggesting that endogenous glucocorticoids may modulate cell development in the postnatal l ...

(1 pages) 7 0 0.0 Feb/2008

Subjects: Science Essays > Biology

Pollution and the Diminishing Quality of Life

ir. The damage begins when the particulates are inhaled into the small air sacs of our lungs called alveoli. With densities such as 100,000 per milliliter a single alveolus may receive 1,500 particula ... e alveolus may receive 1,500 particulates per day. These particulates cause the inflammation of the alveoli; this causes the body to produce agents in the blood that in crease clotting ability, which ...

(2 pages) 31 0 0.0 Feb/2008

Subjects: Science Essays > Environmental Science

Circulation in animals

n the lungs which than passes through bronchioles which defuse through a thin layer of cells called alveoli. This is where gas exchange occurs.3. Quantum MechanicsFour basic principles of quantum mech ...

(2 pages) 393 0 0.0 May/2008

Subjects: Science Essays > Biology

Describe, compare, and contrast the pathway of air in amphibians, Birds, Fish, and Humans.

an branches out into many different passages called the bronchioles. The bronchioles is attached to alveoli which is surrounded by capillaries. The alveoli diffuse oxygen into the capillaries who take ... uman and a fish. First, humans use lungs, and fish use gills. Human “air sacs” are called alveoli, and fish “air sacs” are called lamellae. Fish cannot make their air moist, unlike ...

(5 pages) 4895 0 0.0 Jun/2009

Subjects: Science Essays > Biology

Study of lung capacity of an individual by using spirometer

directly into the lungs where they divide into many smaller tubes which connect to tiny sacs called alveoli. The average adult's lungs contain about 600 million of these spongy, air-filled sacs that a ... hese spongy, air-filled sacs that are surrounded by capillaries. The inhaled oxygen passes into the alveoli and then diffuses through the capillaries into the arterial blood. Meanwhile, the waste-rich ...

(9 pages) 1 0 0.0 Mar/2012

Subjects: Science Essays > Biology > Human Biology