Question | Answer |
The functions of the digestive system are...(6 in all) | ingestion, mechanical digestion, chemical digestion, propulsion, absorption, and defecation. 6 in all |
T or F: Moltility is the action of moving through | true, and be careful not to confuse this with mobility |
Name and list the alimentary canal from top to bottom | Mouth, Pharnex, esophogas, stomach (gullet), small intestine: duodenum, jejunum, ileum, large intestine: (cecum and appendix, colon, sigmoid colon),then the rectum, anus |
The 3 phases of stomach digestion are | 1.) food enters stomach via esophogas, 2.) The cardiac spincter shuts and chyme enters--here the stomach shuts top and bottom, 3.) stomach mixes food, and then the pyloric spincter opens and allows food to leave the region. |
The submucosal plexus | controls secretions |
The enteric plexus | controls gastrointestional motility |
the parasympathetic impulses | increases activities of the digestive system |
the sympathetic impulses | inhibit certain digestive actions |
The mouth has the following 3 functions | 1.) ingestion, 2. )mechanical digestion, 3.)preperation for chemical digestion |
The tongue is attached to the... | the floor of the mough via the lingual frenulum |
The role of the epiglottis is to | flap off the trachea, so that food and drink does not go into the trachea when ingesting. |
Two major parts of the tounge are... | root and body: within the root area are the lingual tonsils, and the palatine tonsils, within the body area is the papiliae |
The palate is the... | roof of the oral cavity |
A child has how many teeth? | 20: which include 8 incisors, 4 cuspids, and 8 molars |
An adult has how many teeth | 32: which includes premolars and 4 wisdom teeth: 8, 8, 8, and 4 |
Name the sections of the teeth | crown, and root are main sections: within the crown are the enamel, dentin, and pulp cavity which also extends downward into the root. the root area includes the gingiva, alveolar process, root canal, periodontal ligament, and cementum |
Teeth are attached mostly by what two areas? | cementum, and the periodontal ligament |
There are 3 major salivary glands, name them | 1.) paratid, 2.) submandibular, and 3.) sublingual |
The fluid in the parotid is... | Made of serous fluid: a clear waterly serous fluid, rich in amylase that breaks down cabs and sugars |
The submandibular glands (3 ) | primarily serous fluid, some mucus, thicker than water |
the sublingual glads (2) | primarily mucus, some serous fluid, and is the most viscous of the 3 |