The oral cavity represents the first part of the digestive tube. Its primary function is to serve as the entrance of the alimentary tract and to initiate the digestive process by salivation and propulsion of the alimentary bolus into the pharynx.
What are the structures and functions of the oral cavity?
The structure of the oral cavity consists of the teeth, tongue, salivary glands, lips, and palate. This vital anatomical structure is the first step in the digestion process. The adult mouth has 32 teeth that sit inside the oral cavity working to breakdown food.
What are the four functions of the mouth?
- Eating, speaking, breathing, digesting food, and smiling. Your mouth does it all and then some. …
- Lips and Cheeks. This dynamic duo is made up of strong muscles. …
- Tongue. …
- Teeth, Gums, and Alveolar Bone. …
- Salivary Glands. …
- Temporomandibular Joint. …
- Keeping Your Oral Cavity Healthy.
What is oral cavity?
Listen to pronunciation. (OR-ul KA-vih-tee) Refers to the mouth. It includes the lips, the lining inside the cheeks and lips, the front two thirds of the tongue, the upper and lower gums, the floor of the mouth under the tongue, the bony roof of the mouth, and the small area behind the wisdom teeth.
Which are functions of the oral cavity quizlet?
better known as the mouth, is the start of the alimentary canal. It has 3 major functions: –Digestion – receives food, preparing it for digestion in the stomach &, small intestine. -Communication – modifies the sound produced in the larynx to create a range of sounds.
How does oral cavity happen?
Cavities form when acids in the mouth wear down, or erode, a tooth’s hard outer layer (enamel). Anyone can get a cavity. Proper brushing, flossing and dental cleanings can prevent cavities (sometimes called dental caries).
What are two major roles of the oral cavity?
The major structures of the oral cavity are the lips, teeth, tongue, oral mucosa and salivary glands. The primary function of the oral cavity is in prehending, masticating, and moistening of food. The latter two functions prepare food for deglutition (swallowing).
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What is oral cavity quizlet?
Oral cavity proper. Area within the boundary of the teeth and gums– extends from the vestibule to the fauces. Lips. Important in speech and eating.
Which is considered one of the main jobs of the oral cavity quizlet?
Which is considered one of the main jobs of the oral cavity? Mastication in the oral cavity involves this action.
What is the oral cavity and what does it contain what is the function of the salivary glands?
The oral cavity is the first part of the digestive tract known as the mouth. It contains teeth, tongue, lips, tonsils, uvula, and the cheeks. What is the function of the salivary glands? The salivary glands produce saliva, which keeps the mouth and other parts of the digestive system moist.
What are the boundaries of oral cavity?
The oral cavity is bounded anteriorly by the lips, laterally by the cheeks, superiorly by the hard palate, and inferiorly by the mucosa covering the superior surface of the tongue and the sheet of muscles attaching to the inner side of the mandible, including geniohyoid, mylohyoid, and digastric.
Which bones compose the oral cavity quizlet?
the maxillae form the upper jaw, supporting the upper teeth. The hard palate is created from the maxilla. Posterior to the maxilla is the horizontal plate of palatine bone. TMJ is divided into two cavities by a disc.
What is found in saliva quizlet?
This helps moisten the food and makes it easier to chew. Saliva also contains an enzyme called amylase that begins to break chemical bonds in starches forming sugars. Saliva contains salivary amylase which breaks down Starch and moistures food to make it softer. Chemical Digestion.
Where is bile juice produced?
Bile is a fluid that is made and released by the liver and stored in the gallbladder. Bile helps with digestion.
Which of the following is an enzyme found in the saliva?
Answer: The enzyme found in human’s saliva is ptyaline. Ptyaline is also known as salivary amylase. Secreted ptyaline in the mouth causes starch digestion in the mouth itself.
What is the digestive system quizlet?
The system of organs and structures responsible for the digestion, absorption, and elimination of food. The digestive system includes Teeth, Mouth, Esophagus, Stomach, Small, Intestine, Large Intestine. … The process of breaking down food into nutrients that can be used by cells.
What is the function of saliva secreted by the salivary glands quizlet?
Salivary glands: Secrete saliva, a digestive fluid, into the oral cavity. Saliva: Moistens food and tissues in the oral space, facilitates chewing and ingestion, aids digestion of starches, and normalizes water balance.
What is another name for oral cavity?
Oral cavity is sometimes used synonymously with buccal cavity, another scientific term for the inside of the mouth (buccal can mean the same thing as oral). However, the buccal cavity is sometimes more technically defined as the entry area of the oral cavity.
What is the space between the lips and teeth called?
The vestibule – the space between the soft tissue (lips and cheeks), and the teeth and gums. The vestibule is kept moist by secretions from the parotid salivary glands, which are located in front of the ears and behind the angle of the jaw.
What is the name of the cavity between the lip and teeth quizlet?
The vestibule (ves′ti-bool, entry) is the space between the lips or cheeks and the teeth, and the oral cavity proper lies medial to the teeth.
Which bones compose the oral cavity?
The basic bony framework of the oral cavity is formed by three main bones, the mandible or the lower Jaw bone, the maxilla or the upper jaw bone, and the palatine bones.
Which are the stimuli for defecation?
Defecation is elicited by the presence of fecal material in the rectum due to peristaltic propagation of colonic motility. Consequently, sensory stimuli in the anal canal provoke a sudden drop in the tone of the internal anal sphincter.
Which is not a job of saliva?
The correct option is a. Hardening of tooth enamel by the presence of fluoride is not the function of saliva.
Which are functions of the cheeks and lips?
The lips and cheeks help hold food in the mouth and keep it in place for chewing. They are also used in the formation of words for speech. The lips contain numerous sensory receptors that are useful for judging the temperature and texture of foods.
What is the duodenum?
(DOO-ah-DEE-num) The first part of the small intestine. It connects to the stomach. The duodenum helps to further digest food coming from the stomach. It absorbs nutrients (vitamins, minerals, carbohydrates, fats, proteins) and water from food so they can be used by the body.
What is your gallbladder?
The gallbladder is a storage pouch for bile, a liquid that aids digestion. The liver continually makes bile, which is stored in the gallbladder until you eat. When you consume food, the stomach releases a hormone that causes the muscles around the gallbladder to contract and release the bile.
Which is not digest by human?
Cellulose is a fibre which is not digestible by the human digestive system.
What is the pH of the mouth?
Saliva has a pH normal range of 6.2-7.6 with 6.7 being the average pH. Resting pH of mouth does not fall below 6.3. In the oral cavity, the pH is maintained near neutrality (6.7-7.3) by saliva.
Can saliva change your DNA?
“Your saliva is you, distilled into fluid form,” Smith explained. “When we kiss, we’re essentially sharing a tiny bit of our ecosystems — we’re swapping genetic information that our bodies unconsciously process — and in doing so, we learn more about each other in an instant than we ever could consciously.”
What is the role of saliva in the digestion of food answer?
The digestive functions of saliva include moistening food, and helping to create a food bolus, so it can be swallowed easily. Saliva contains the enzyme amylase that breaks some starches down into maltose and dextrin. Thus, digestion of food occurs within the mouth, even before food reaches the stomach.