The meaning of MOUTH is the natural opening through which food passes into the body of an animal and which in vertebrates is typically bounded externally by the lips and internally by the pharynx and encloses the tongue, gums, and teeth. How to use mouth in a sentence.

In vertebrates, the first part of the digestive system is the buccal cavity, commonly known as the mouth. The buccal cavity of a fish is separated from the opercular cavity by the gills. Water flows in through the mouth, passes over the gills and exits via the operculum or gill slits.

Our mouths help us chew, speak, breathe and connect to the world around us. Without your mouth, you couldn’t taste freshly baked bread, smile at your neighbor or tell the people you love how much they mean to you. Taking good care of your mouth is essential for both dental health and whole-body health.

2025年1月14日 · mouth, in human anatomy, orifice through which food and air enter the body. The mouth opens to the outside at the lips and empties into the throat at the rear; its boundaries are defined by the lips, cheeks, hard and soft palates, and glottis.

In human anatomy, the mouth is the first portion of the alimentary canal that receives food and produces saliva. [2] . The oral mucosa is the mucous membrane epithelium lining the inside of the mouth. In addition to its primary role as the beginning of the digestive system, the mouth also plays a significant role in communication.

My teeth ended up in another part of my mouth. They also talk with their mouths full. Your mouth is your lips, or the space behind your lips where your teeth and tongue are. He covered his mouth with his hand. If you mouth something, you form words with your lips without making any sound.

We looked down into the mouth of the volcano. The mouth of a river is the place where it flows into the sea. The opening of a bottle or jar is also called a mouth. I mouthed a single word, …

When he starts talking about politics, I just keep my mouth shut. They can't afford another child. They already have too many (hungry) mouths to feed. She was just mouthing the usual meaningless platitudes about the need for reform. The librarian mouthed “quiet.” He got in trouble again for mouthing off to his teacher.

In humans and many other animals, the mouth is the place where food is chewed and mixed with a clear liquid called saliva. The mouth is a way for air to enter the body, too. Human beings also use their mouths for speaking and for making facial expressions.

plural mouths [mou, th, z]. Anatomy, Zoology. the opening through which an animal or human takes in food. the cavity containing the structures used in mastication. the structures enclosing …