The herb Indian spikenard is another effective home remedy for low blood pressure. It should be taken in doses of thirty to forty grains with a pinch of a little camphor and cinnamon (cinnamon). An infusion can also be prepared by steeping 15 to 20 gm of the herb in 250 ml of boiling water, and taking it thrice a day.
Alveoli. Alveoli are the functional units of the lungs that permit gas exchange between the air in the lungs and the blood in the capillaries of the lungs. Alveoli are found in small clusters called alveolar sacs at the end of the terminal bronchiole.
Lungs ensure that efficient gas exchange takes place between the air and the person's blood. The lungs are a pair of lobed s â¦ tructures made up of a series of highly branched tubules called bronchioles, which end in tiny air sacs called the alveoli (the alveolar membrane is the site of gas exchange).  Lungs allow us to take in oxygen from the external air and allow us to get rid of excess carbon dioxide. alveolar = air sac   simple squamous epithelium; single layer of flattened cells with disc-shaped central nuclei and sparse cytoplasm; the simplest of the epithelium.