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Ampulla


ampulla
saclike structure of the ambulacral system of starfishes
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
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ampulla
Any small vesicle or sac-like offshoot. Some examples include the dilation at the end of the semicircular canal of the ear, or the internal expansion of the echinoderm tube foot.
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ampulla - upper region of the mammalian oviduct, near the ovary. Fertilization typically takes place in this region.
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ampullary organ A receptor that can detect electrical currents. These electroreceptors are found in most fishes, some amphibians, and the platypus.
amygdaloid A part of the brain.
amylase An enzyme that breaks down starch into smaller units.
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The capacitated spermatozoon and the oocyte meet and interact in the ampulla of the fallopian tube. In mammals, binding of the spermatozoon to the zona pellucida, an extracellular layer surrounding the oocyte, initiates the acrosome reaction.
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The radial canals feed into lateral canals extending into tube feet, each of which has an ampulla.
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4065. Crura membranacea ampullaria ductus saemicirculari
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4066. Crura ossea canalium saemicircularium ...
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The spermatophore contains the ampulla, which contains the sperm, and the spermatophylax, which the female eats.
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The common bile duct and the pancreatic duct enter the duodenum together at the Ampulla of Vater. The branchings of the bile ducts resemble those of a tree, and indeed the term "biliary tree" is commonly used in this setting.
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