QUIZ 10 LETS GO Flashcards
seven processes of involved in getting food into the body
ingestion, mechanical processing, digestion, secretion, absorption, excretion, compaction
main structures of the digestive tract
oral cavity, pharynx, esophagus, stomach, small intestine, large intestine
accessory organs to digestive tract
teeth, liver, tongue, pancreas, salivary glands, gallbladder
four layers of the digestive tract wall (General)
mucosa, submucosa, muscular externa, serosa
three layers of mucosa
mucosa epithelium - stratified or simple squamous epithelia
lamina propria - areolar connective tissue
muscularis mucosae - smooth muscles tissue
what is submucosa made of
areolar CT
directions of the two layers of muscularis externa
internal circular, external longitudinal
serosa composed of what two tissue layers - where is there no serosa and what replaces it?
mesothelium (simple squamous), loose CT
no serosa in the pharynx, esophagus and rectum, instead there is a fibrous sheet called the adventitia
characteristics of smooth muscle
mono-nucleated, spindle shaped, short, non striated, autonomic innervation, pacesetter cells initiate contraction
characteristics of skeletal muscle
multinucleated, cylindrical, long, striated, innervated my somatic motor nerves
two serous membrane of the ventral body cavities
parietal peritoneum : covers inner surface of abdominal cavity walls
visceral peritoneum: peritoneal serosa covering outer surfaces of the organs laying within the cavity
special name for serous membranes (simple squamous epithelium) lining body cavities?
mesothelium
what is the peritoneal cavity?
potential spice between the parietal and visceral peritoneums’
what is a mesentary?
a double layers of serous membrane that supports and stabilizes the position of an organ in the abdominopelvic cavity and provides a route for associated blood, lymph vessels and nerves
what tissues line the oral cavity?
oral mucosa - non keratinized stratified squamous epithelia. No serosa, adventitia instead.
gross anatomy of the oral cavity
labia, uvula, hard palate, soft palate, gingiva
accessory organs of the oral cavity (1 and its parts)
tongue :
papillae, intrinsic and extrinsic muscles, lingual frenulum, lingual tonsil
tongue four functions
mechanical digestion by compression, abrasion, distortion
manipulation to help swallow
sensory analysis
secretion of mucin and enzyme lingual lipase
salivary glands contain what two types of cells
serous secretory and mucous secretory
three salivary glands
parotid, submandibular, sublingual
main parts of a tooth, types of teeth
crown, neck and root 1st, 2nd, 3rd molars 1st, 2nd premolars cuspids lateral incisors central incisors
pharynx : what opens into here, what to the palatal muscles do, 3 phases of swallowing, what Is mass of food swallowed called
auditory tubes
muscles raise soft palate and adjacent portions of the pharyngeal wall
phases: buccal, pharyngeal, esophageal
bolus
what is the opening in the diaphragm that allows the esophagus to pas through
esophageal hiatus
what tissue forms the epithelium of the mucosa in the esophagus
stratified squamous
what glands lie in the submucosa in the esophagus
esophageal glands
three regions of the stomach
cardia, fundus, pylori
what is the food mixture that leaves the stomach called
chyme
what tissue forms mucosal epithelium in the stomach
simple columnar/mucous surface cells
what additional muscles layer is present in the stomach and why is it there?
oblique layer - strengthen stomach and assists in the turning needed to make chyme
function of greater omentum
protective padding, lipid energy reserves, insulation
lesser omentum attachments
hepatogastric ligament, hepatoduodenal ligament
