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Search Results for: blood-air barrier

Blood-air barrier The barrier between capillary blood and alveolar air comprising the alveolar epithelium and capillary... Read More

Organization of the Respiratory System Each lung is composed of air sacs called alveoli - the sites of gas exchange with... Read More

Integumentary System Definition The integumentary system is the outermost layer of the body. The animal body, in... Read More

Chorion Definition The chorion is a membrane that develops around the developing fertilized egg. It begins to develop... Read More

Definition noun plural: nitrogens ni·tro·gen, ˈnɐɪtʰɹədʒən (biochemistry) A colorless, odorless, gaseous... Read More

Lined with moist tissue, the pharynx is like a bustling biological highway that directs food and air to their respective... Read More

Definition of Alimentary canal What is the alimentary canal? The alimentary canal is a muscular hollow continuous tubular... Read More

It only takes one biological cell to create an organism. In fact, there are countless species of single-celled organisms,... Read More

Parenchyma Definition What does parenchyma mean? Let's define the word "parenchyma". Most of the functional tissues in... Read More