Definition noun, plural: orifices An opening or aperture; any external opening in the body of an animal. Supplement In a typical mammalian body such as the human body, the body orifices are: nostrils, eyes, mouth, ear canals, anus, urethra, vagina, orifices of nipples, orifices of sweat glands, navel. Other animals may have some other body orifices: cloaca in birds, reptiles, amphibians, and some other animals, and siphon in mollusca, arthropods, and some other animals. Word origin: Middle English, from Old French, from Late Latin orificium, compound of os, mouth + -ficium. Related forms: orificial (adjective). Related terms:


anal orifice aortic orifice cardiac orifice orifice of external acoustic meatus orifice of inferior vena cava tricuspid orifice
*

Population Growth and Survivorship

This lesson looks at population attributes, regulation, and growth. It also covers population genetics, particularly gen..

You are watching: How many orifice in the human body


*

Biological Cell Introduction

It only takes one biological cell to create an organism. A single cell is able to keep itself functional through its "mi..


*

Sensory Systems

A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the inner ..


*

Takahē (Porphyrio hochstetteri)

Meet the colorful takahē, an extremely rare flightless bird. Find out more about its unique features and why they matte..


*

A Balanced Diet – Minerals and Proteins

Proteins and minerals can be derived from various dietary sources. They are essential for the proper growth and developm..


Adaptive Radiation

The diversification of several new species from a recent ancestral source, each adapted to utilize or occupy a vacant ad..

See more: How Many Inches Are In A Meter Stick ? Meters To Inches Converter


The content on this website is for information only. It is not intended to provide medical, legal, or any other professional advice. Any information here should not be considered absolutely correct, complete, and up-to-date. Views expressed here do not necessarily reflect those of Biology Online, its staff, or its partners. Before using our website, please read our Privacy Policy.