Describe the structure and function of the alveoli

What will be an ideal response?


The alveoli are clusters of thin-walled, inflatable, grapelike sacs at the terminal branches of the conducting airways. The alveolar walls consist of a single layer of flattened, Type I alveolar cells. Each alveolus is surrounded by a network of pulmonary capillaries, the walls of which are also only one cell thick. The interstitial space between an alveolus and the surrounding capillary network is extremely thin. Thus, only a 0.5 mm barrier known as the alveolar–capillary membrane separates air in the alveoli from blood in the pulmonary capillaries.

Anatomy & Physiology

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The most ancient deuterostomes are

A) Annelids. B) Echinoderms. C) Mollusks. D) Arthropods.

Anatomy & Physiology

If someone's blood pressure were listed as 110/65 mmHg, then their mean arterial pressure (MAP) would be

A.  70 mmHg. B.  80 mmHg. C.  90 mmHg. D.  100 mmHg. E.  110 mmHg.

Anatomy & Physiology

As the concentration of red blood cells increases in the blood, the viscosity of the blood increases

Indicate whether the statement is true or false

Anatomy & Physiology

For better retention of material, it is better to break up study sessions into multiple smaller chunks (e.g. 30 minutes each) rather than fewer, longer sessions (e.g. several hours each).

Answer the following statement true (T) or false (F)

Anatomy & Physiology