test 5 digestive system pt 1
Type of Paper: Question-Answer
Academic Level: Undergrad. (yrs 3-4)
Paper Format: APA
- The first part of mechanical digestion is “mastication” (Latin for “to chew”), the chewing of ingested food by the teeth in the oral cavity.
(b) All undigestible materials as well as the waste products secreted by the accessory organs into the GI tract are compacted into “feces” (Latin for “dregs”), or fecal material, and then eliminated from the GI tract by the process of “defecation” (Latin for “to remove the dregs”).
a. The oral cavity is bounded anteriorly by the _____ ____ ____ and posteriorly by the _________.
2) The “oral cavity proper” lies central to the alveolar processes of the mandible and maxillae.
(a) It exhibits prominent “transverse palatine folds” or “friction ridges”, to assist the tongue in manipulating ingested materials prior to swallowing.
(a) They can initiate an immune response when necessary.
(a) Each parotid gland is located anterior and inferior to the ear, partially overlying the masseter muscle.
- This gland becomes infected and swollen with mumps.The “parotid duct”, which carries the saliva to the oral cavity, travels parallel to the zygomatic arch and opens into the vestibule of the oral cavity near the second upper molar
- These are the squirters used in “gleeking”!
(b) The last teeth to erupt are the third molars, often called “wisdom teeth”, in the late teens or early 20s.
- There may not be sufficient room in the jaw to accommodate these final molars and they may need to be extracted.
(a) They are also referred to as “eye teeth”.
(b) Molars are also adapted for grinding and crushing ingested materials.