BIOL 2302 Exam 4 Review Kasparian Questions and Answers

The tube that runs through the entire body from mouth to anus is called the.... - Answer-alimentary canal What are the four functions of the digestive system? - Answer-Ingestion Digestion Absorption Elimination This layer of the alimentary canal is the most superficial lined with epithelium, a lamina propria and muscular layer. - Answer-mucosa This layer consists of exocrine glands, blood vessels and nerve endings - Answer-submucosa This layer consists of a circular and longitudinal layer of smooth muscle. - Answer-Muscularis externa This layer consists of a layer continuous with the tissue that lines the body cavity that is the deepest layer of the alimentary canal. - Answer-Serosa The anterior opening of the oral cavity is the.... - Answer-mouth Posterior opening to the oropharynx is called... - Answer-fauces What tissue lines the oral cavity? What advantage does this tissue have that benefits the oral cavity? - Answer-non-keratinized stratified squamous epithelium; resists abrasion of food Which functions of the digestive system occur at the oral cavity? - Answer-ingestion - take in of food digestion - break down of starch by amylase enzyme in salivaWhich skeletal muscles are found at the lips and cheeks that assist in chewing and speech production? - Answer-Lips: orbicularis oris Cheeks: Buccinators The area bound by lips and cheeks externally and teeth and gums internally is called... - Answer-vestibule The median fold that joints the internal aspect of each lip to gums is called.... - Answer-labial frenulum The part of the oral cavity underlain by the palatine bone and palatine process that assist in chewing is..... - Answer-hard palate The mobile fold of skeletal muscle that closes off the nasopharynx during swallowing is called - Answersoft palate The soft palate projection that projects downward into oropharynx is called... - Answer-uvula The organ in the oral cavity that grips and repositions food during chewing, mixes food with saliva, forms bolus, and initiates swallowing and forms speech sounds is called the.... - Answer-tongue These muscles alter the shape of the tongue to form sounds and more precise repositioning of food - Answer-intrinsic muscles These muscles alter the tongues position in the oral cavity - Answer-extrinsic muscles The structure under the tongue that secures tongue to the floor of the oral cavity is called... - Answerlingual frenulum The type of papillae that gives the tongue its roughness to provide friction is called.... - Answer-filiform The type of papillae that are scattered over the tongue and gives it a reddish hue are.... - AnswerfungiformThis type of papillae forms a V-shaped row in the back of the tongue - Answer-Circumvallate Which structure on the tongue divides the tongue between the 2/3 in the oral cavity and the remaining third in the oropharynx? - Answer-sulcus terminalis What is the function of the salivary glands? - Answer-secretion of saliva What are the four roles of saliva in digestion and maintaining the oral cavity? - Answer-1) cleansing mouth of bacteria 2) Moisten and dissolve food chemicals 3) aid in bolus formation 4) Amylase enzyme to break down starch What are the three extrinsic salivary glands? - Answer-1) Parotid 2) Submandibular 3) Sublingual Which extrinsic salivary gland is located anterior to the ear between master muscles that excretes saliva into the vestibule? - Answer-Parotid gland Which extrinsic salivary gland lies in the medial aspect of mandibular body and excretes saliva at the base of lingual frenulum? - Answer-Submandibular gland