egestion

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Digestive vacuole

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Ahura Mazda - relief of the Zoroastrian god Ahura Mazda at the ancient ruins of Persepolis in Iran. Also known as Ormazd Zoroastrianism,

Which Religion Is the Oldest?

Titanic infographic. The 30th anniversary of its discovery is September 1, 2015. SPOTLIGHT VERSION.

Timeline of the Titanic’s Final Hours

Small, white rat (genus Rattus) on a glass table. (rodent, laboratory, experiment)

Cruel and Unusual Punishments: 15 Types of Torture

Two chicks near an egg with a white background (poultry, chick, chickens, birds).

What Do Eggs Have to Do with Easter?

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

July, 2006, Launch of Space Shuttle Discovery STS-121. See attached for full caption information.

Will Light-Speed Space Travel Ever Be Possible?

Easter Procession of Maria Santisima del Sacromonte in Granada, Spain. This statue is known as Virgen de los Gitanos or The Virgin of the Gypsies.

What is Holy Week?

egestion

physiology

Learn about this topic in these articles:

digestion

In digestion: Egestion
Animals that ingest bulk food unavoidably take in some matter that they are incapable of using. In the case of unicellular organisms that form food vacuoles, the vacuoles eventually fuse with the cell membrane and then rupture, releasing indigestible wastes to the outside. Substances…
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excretion and excretory systems

In excretion
Egestion is the act of excreting unusable or undigested material from a cell, as in the case of single-celled organisms, or from the digestive tract of multicellular animals.
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