proventriculus
/ˌprəʊvɛnˈtrɪkjʊləs
/noun (plural proventriculi) Zoology
1The narrow glandular first region of a bird’s stomach between the crop and the gizzard.The proventriculus and gizzard are small, and the lower esophagus is sacculated, which delays passage of particles into the lower gut where additional fermentation occurs in the paired ceca....
- Ingesta from the proventriculus and gizzard were preserved in 75% alcohol and examined under a dissecting scope.
- Parents sustain themselves during incubation on energy stored as body fat and lipid-rich stomach oil in the proventriculus.
1.1The thick-walled muscular expansion of the oesophagus above the stomach of crustaceans and insects.Enhanced levels of expression are seen in older embryos adjacent to the segmental involutions (C, arrowheads) and in the salivary glands, proventriculus, and somatic musculature....
- Four tunnels off the lumen of the proventriculus of the carpenter bee, Xylocopa virginica virginica, have been discovered.
- The proventriculus of the worker honeybee is an organ which effects a highly efficient separation of pollen grains from the medium in which they are suspended.
Origin
Mid 19th century: from pro-2 'before' + Latin ventriculus 'small belly', diminutive of venter, ventr- 'belly'.
- the fat is in the fire
- The Federalist
- the Federal Union
- the female of the species
- the Fenland
- the Fens
- the Few
- the Fifteen
- the final straw
- the finer points of
- the finished article
- the firing line
- (the) first among equals
- (the) first cab off the rank
- the Flat
- the Fleet
- the Flemish
- the Flood
- the fog of war
- the forbidden degrees
- the Forties
- the fortunes of war
- the Forty-five
- the fountain of youth
- the four freedoms