18 results found

Search Results for: air sac

Air sac

Air sac (Science: zoology) Thin-walled sacs or spaces which function as a part of the respiratory system in birds, fishes,... Read More

Respiration

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

Air bladder

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

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

Pneumatophore

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

Respiratory system

Definition noun An organ system comprised of organs and structures associated for respiration or gas exchange Supplement An... Read More

Alveolus

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

Bladder

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

Swim-up fry

Swim-up fry (Science: marine biology) life stage that begins when the alevin (larval salmonid) has absorbed its yolk sac,... Read More

Sack

sack To plunder or pillage, as a town or city; to devastate; to ravage. The romans lay under the apprehension of seeing... Read More

Utricle

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

Hydrophyte

Definition noun, plural: hydrophytes (botany) Any plant adapted to grow wholly or partly submerged in water or wet habitats;... Read More

Siphosome

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

Alveolar cell

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

Ear

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

Seed Plants

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

Fruits, Flowers, and Seeds

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

Pouch

pouch 1. A small bag; usually, a leathern bag; as, a pouch for money; a shot pouch; a mail pouch, etc. 2. That which is... Read More