The external opening of the mouth is usually much longer in the horizontal plane, but may be extended through the movement of the jaw to become nearly as wide in the vertical plane as well.
The external opening of the mouth is usually much longer in the horizontal plane, but may be extended through the movement of the jaw to become nearly as wide in the vertical plane as well. The lips are soft, fleshy structures that form the anterior border of the external opening of the mouth. The lips are very elastic and elastic structures and contain many collagen and elastin fibers and adipose tissue covered by a thin layer of stratify squamous epithelium. The outside of the lips is continuous with the skin and is covered by keratinize epithelium, while the inner surface is continuous with the mucous membrane of the mouth and is covered by nonkeratinized epithelium.
Reading: Mouth – Human Mouth Anatomy
lateral to the lips are the cheek, which are fleshy structures that form the sides of the sass. alike to the lips, the outside of the cheek is covered in keratinized stratify squamous epithelium continuous with the hide and the department of the interior is covered in nonkeratinized stratified squamous epithelium continuous with the mucous membrane. Between the epithelium layers are layers of conjunction tissues, nerves, and muscles. In particular the muscles of the cheek include the buccinator, orbicularis oris and zygomaticus major, which move the lips and cheeks.
The natural language forms the inferior share of the mouth, but frequently moves throughout the talk to occupy about any region of the empty cavity. While many people think of the tongue as a muscle, it is actually an organ make of epithelium, several bony muscles, nerves, and connection tissues. The tongue contains many small ridges known as papilla that help it to grip and move food around the mouthpiece. taste buds are hidden in valley around some of the papilla and produce the smell of taste by detecting chemicals found in food. The tongue besides helps to produce actor’s line by altering or stopping the flow of publicize through the mouthpiece to produce the sounds of many consonants.
The unvoiced and soft palates form the roof of the mouth. On the front tooth end of the mouth, the hard palate is formed by the inferior surface of the upper jaw and palatine bones. These bones are covered with a thin layer of connective tissues and mucous membranes, which form modest wrinkles. The roof of the sass continues posteriorly as the soft palate, a flexible fleshy mass of tissues that ends in the uvula. The hard and cushy palates work together to separate the mouth from the rhinal cavity. The cushy palate moves superiorly during swallowing to cover the nasopharynx of the throat, preventing food from entering the nasal consonant cavity .
The throat, or throat, is a funnel-shaped metro located in the back tooth of the mouthpiece. The throat connects the rhinal cavity and mouth to the esophagus and larynx in the neck. The region of the throat behind the mouth is known as the oropharynx and forms the posterior wall of the mouth. food in the talk is swallowed into the oropharynx and passed on to the esophagus and the rest of the gastrointestinal tract. Air inhaled through the mouth or nuzzle besides passes through the throat on its manner to the larynx, and then passes through the throat on its way out of the soundbox during exhalation .
Inside the mouth are respective structures that aid in the digestion of food. Teeth are hard structures specialized for the sting and grinding of food ( known as chew, or chewing ). They form a continuous row in the bottom of the mouthpiece surrounding the tongue on the lateral pass and anterior sides, adenine well as another closely identical course extending from the roof of the mouth. Teeth shape deep roots into the bones of the upper jaw and the lower jaw, but grow out through the gums of the mouth to form bite surfaces. The gums, or gingiva, are soft mucous membranes surrounding the tooth, protecting the roots from decay and helping to hold the teeth in position. last, many salivary glands surround the mouth and release their secretion, saliva, into the talk through many bantam ducts. Saliva helps to moisten and chemically digest food in the mouthpiece before it is swallowed. Saliva besides protects the tooth from decay by digesting and washing away bantam bits of food that become cling to the tooth .