Emphysema
as it moves through blood vessels capillaries in the alveoli walls, your blood takes oxygen from the alveoli and gives off carbon dioxide to the alveoli
The alveoli is just one cell layer thick so that diffusion of gasses between the capillaries and the alveoli is easy. Simple squamous epithelium are found in the capillary walls and the alveolar walls. They are thin so diffusion is easy.
—Bronchi, bronchioles and alveoli - looks like an upside down tree.◦Trachea is the main trunk that divides into◦Right bronchus and left bronchus. As the bronchi enter the lungs they divide into smaller and smaller branches.◦The smallest tubes whose walls are made only of smooth muscle are called bronchioles.◦Bronchioles further divide into microscopic tubes called alveolar ducts which resemble the main stem of a bunch of grapes.◦Alveolar ducts end in several alveolar sacs arranged like a clusters of grapes.◦The walls of the alveolar sacs are made up of numerous alveoli each of which resembles a single grape.
alveoli
fibrosis
Emphysema or Pulmonay emphysema
as it moves through blood vessels capillaries in the alveoli walls, your blood takes oxygen from the alveoli and gives off carbon dioxide to the alveoli
The alveoli is just one cell layer thick so that diffusion of gasses between the capillaries and the alveoli is easy. Simple squamous epithelium are found in the capillary walls and the alveolar walls. They are thin so diffusion is easy.
The respiratory membrane is formed by a combination of the walls of alveoli and walls of capillaries. It consists of type 1 alveolar cells, a basement membrane, capillary endothelium, alveolar epithelium and macrophages.
—Bronchi, bronchioles and alveoli - looks like an upside down tree.◦Trachea is the main trunk that divides into◦Right bronchus and left bronchus. As the bronchi enter the lungs they divide into smaller and smaller branches.◦The smallest tubes whose walls are made only of smooth muscle are called bronchioles.◦Bronchioles further divide into microscopic tubes called alveolar ducts which resemble the main stem of a bunch of grapes.◦Alveolar ducts end in several alveolar sacs arranged like a clusters of grapes.◦The walls of the alveolar sacs are made up of numerous alveoli each of which resembles a single grape.
Yes, capillaries form a network around the alveoli. It is through the alveolar walls and into the capillaries that oxygen enters the blood stream. Carbon dioxide leaves the blood by the reverse route.
Alveoli are the tiny sacs in the lungs that are the powerhouses of the respiratory system. That is where oxygen-spent blood gives up its carbon dioxide and becomes re-charged with oxygen. Lung alveoli are the ends of the respiratory tree, branching from either alveolar sacs or alveolar ducts, which like alveoli are both sites of gas exchange with the blood as well. Alveoli are particular to mammalian lungs.
Silicosis. Very fine particles of dust were inhaled, these lodged in the terminal alveoli where they interfered with the transfer oxygen. They also caused inflammation which led to chronic thickening of the alveolar walls.
pulmonary embolism
The alveolus (plural = alveoli) is the tiny air sac in the lung where gas exchange occurs. Oxygen from the inhaled air diffuses through the walls of the alveoli and adjacent capillaries into the red blood cells. The oxygen is then carried by the blood to the body tissues. Carbon dioxide produced by the body's metabolism returns to the lung via the blood. It then diffuses across the capillary and alveolar walls into the air to be removed from the body with expiration.The alveoli have a structure specialized for efficient gaseous exchange:Walls are extremely thin.They have a large surface area in relation to volume.They are fluid lined enabling gases to dissolve.They are surrounded by numerous capillaries.
alveoli
That sounds like a general description of the LUNGS.The lungs are loaded with 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.