You searched for air_sac - Biology Articles, Tutorials & Dictionary Online

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

Definition noun, plural: bladders (1) (anatomy) A distensible membranous sac or organ that can hold liquid or gas (2)... Read More

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

Air bladder 1. (Science: anatomy) An air sac, sometimes double or variously lobed, in the visceral cavity of many fishes. It... Read More

Air cell 1. (Science: botany) a cavity in the cellular tissue of plants, containing air only. 2. (Science: anatomy) a... Read More

Definition noun, plural: pneumatophores (botany) A specialized aerial root, such as in certain mangrove species, that stick... Read More

Aves Definition What are birds classified as? Birds constitute the class Aves of the kingdom Animalia. How to define Aves?... Read More

Definition noun, plural: alveoli (1) pulmonary alveolus; air sac (2) (general) A concave cavity or pit alveolar,... Read More

Definition noun (1) (anatomy) The part of the otolith organ found in the inner ear of vertebrates (2) (anatomy) The small... Read More

There are two main subdivisions of seed plants—the ones without covered seeds, the gymnosperms, and the ones with covered... Read More

Ear 1. The organ of hearing; the external ear. in man and the higher vertebrates, the organ of hearing is very complicated,... Read More

Flowering plants grow in a wide variety of habitats and environments. They can go from germination of a seed to a mature... Read More

Definition noun, plural: syphosomes The region comprised of the feeding, reproductive, and defensive zooids in a... Read More

Definition noun, plural: alveolar cells The cell lining the pulmonary alveolus; the cell of the air sac of the... Read More

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