BIOL 2302 Exam 4 Review Kasparian Questions And Answers 100% Verified.

BIOL 2302 Exam 4 Review Kasparian Questions And Answers 100% Verified. The tube that runs through the entire body from mouth to anus is called the.... - answeralimentary canal What are the four functions of the digestive system? - answerIngestion Digestion Absorption Elimination This layer of the alimentary canal is the most superficial lined with epithelium, a lamina propria and muscular layer. - answermucosa This layer consists of exocrine glands, blood vessels and nerve endings - answersubmucosa This layer consists of a circular and longitudinal layer of smooth muscle. - answerMuscularis 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. - answerSerosa The anterior opening of the oral cavity is the.... - answermouth Posterior opening to the oropharynx is called... - answerfauces What tissue lines the oral cavity? What advantage does this tissue have that benefits the oral cavity? - answernon-keratinized stratified squamous epithelium; resists abrasion of food Which functions of the digestive system occur at the oral cavity? - answeringestion - take in of food digestion - break down of starch by amylase enzyme in saliva Which skeletal muscles are found at the lips and cheeks that assist in chewing and speech production? - answerLips: orbicularis oris Cheeks: Buccinators The area bound by lips and cheeks externally and teeth and gums internally is called... - answervestibule The median fold that joints the internal aspect of each lip to gums is called.... - answerlabial frenulum The part of the oral cavity underlain by the palatine bone and palatine process that assist in chewing is..... - answerhard 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... - answeruvula 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.... - answertongue These muscles alter the shape of the tongue to form sounds and more precise repositioning of food - answerintrinsic muscles These muscles alter the tongues position in the oral cavity - answerextrinsic 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.... - answerfiliform The type of papillae that are scattered over the tongue and gives it a reddish hue are.... - answerfungiform This type of papillae forms a V-shaped row in the back of the tongue - answerCircumvallate Which structure on the tongue divides the tongue between the 2/3 in the oral cavity and the remaining third in the oropharynx? - answersulcus terminalis What is the function of the salivary glands? - answersecretion of saliva What are the four roles of saliva in digestion and maintaining the oral cavity? - answer1) 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? - answer1) Parotid 2) Submandibular 3) Sublingual Which extrinsic salivary gland is located anterior to the ear between master muscles that excretes saliva into the vestibule? - answerParotid gland Which extrinsic salivary gland lies in the medial aspect of mandibular body and excretes saliva at the base of lingual frenulum? - answerSubmandibular gland Which extrinsic salivary gland lies anterior to the submandibular gland under the tongue with 10- 12 ducts that open to the floor of the mouth? - answerSublingual gland Salivary glands scattered throughout the oral mucosa that maintain the moist environment of the oral mucosa are.... - answerintrinsic salivary glands Saliva is made mostly of.... - answerwater (97-99%) What are some other chemical properties of saliva? - answer-Hypo-osmotic - slightly acidic What electrolytes are found in saliva? - answerSodium, Potassium, Chlorine, Phosphate, Bicarbonate What proteins are found in saliva? - answer- mucin (eventually converted to mucus) - lysozyme and defensins (immune proteins) - IgA (Antibody found in mucus and saliva) What metabolic wastes are surprisingly found in saliva? - answerUric acid and urea Extrinsic salivary glands respond what type of stimuli? - answer- ingested food (chemo and mechanoreceptors) - thought of food (Psychological) Which division of the nervous system stimulate the intrinsic salivary glands? - answerparasympathetic nervous system Strong sympathetic stimulation causes which condition in the oral cavity? - answerdry mouth - inhibition of salivation during sympathetic state What calcified structures are responsible for carrying out the physical digestion of food particles through mastication? - answerteeth Animals that have teeth of different shapes and serve different functions are known as.... - answerheterodonts Chisel shaped teeth that function in cutting and nipping at food are.... - answerincisors fanglike teeth that tear and pierce food are... - answercanines