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Digestive system
Abdomen Anatomy
Question | Answer |
---|---|
what are the two parts of the digestive system | *accessory glands *alimentary canal(mouth to anus) |
what are the accessory glands of the digestive system | *salivary glands *liver *gallbladder *pancreas |
salivary glands | any of the three glands near the oral cavity that secrete saliva |
*largest solid organ of the body, located in the RUQ *produces bile | liver |
*blue/gray sac attached to the to the under side of hte liver *has a capacity of apprx. 50ml *holds bile | gallbladder |
*exocrine and endocrine organ *exocrine function includes the secretion of *enzymes that help digest food and neutralize acid in the stomach *pancreatic juice | pacreas |
what are the divisions of the alimentary canal | *mouth *pahrynx *esophagus *stomach *small intestine *large intestine(terminates at anus) |
*extends from the diaphragm to bony pelvis *consist of abdominal and pelvic cavities | abdominopelvic cavity |
what is contained in the abdominal cavity | *stomach *small intestines *large intestines *liver *gallbladder *spleen *pancreas *kidneys |
what is contained in the pelvic cavity | *rectum *sigmoid *urinary bladder *reproductive organs |
what are the nine regions of the abdominopelvic cavity | *right and left hyperchondrium -epigastrium *right and left lateral -umbilical *right and left inguinal -hypogastrium |
double layered membrane that surrounds organs of digestion | peritoneum |
parietal peritoneum | lines abdominal wall |
visceral peritoneum | surrounds organs |
serous filled cavity that surrounds organs abdominal cavity -contains 50ml of serous fluid | parietal cavity |
anchors organs and acts as conduit for vessels and nerves | messentery |
structures that are retroperitoneal | -urinary system -most of reproductive system -inferior portion of esophagus |
what are the two parts that make up the messentery | -omentum *greater omentum *lesser omentum -mesocolon |
attaches greater curverature of stomach to transverse colon | greater omentum |
attaches lesser curverature of stomach to liver | lesser omentum |
from transverse colon to posterior abdominal wall | mesocolon |
cavity within a hollow organ | lumen |
round muscle(opening of hollow organ) | sphincter |
wavelike movement of wall of hollow organ | peristalsis |
churning or mixing motion of stomach to break down food | segmentation |
narrowing of a lumen | stenosis |
absence of an opening | atresia |
what are the four layers of the digestive wall tract | 1. serous 2. muscular 3. submucosal 4. mucosal |
outermost layer of digestive tract, part of visceral peritoneum. also called adventitia layer | serous layer |
second layer of digestive tract, responsible for peristalsis. there are circular and longitudinal varieties | muscular layer |
third layer of digestive tract, contains vessels | submucosal layer |
innermost or 4th layer, epithelial layer (absorbion and secretion) | mucosal layer |
what layer of tissue is the esophagus missing and what is in place of it | -serous layer -connective tissue |
what are the six substances that are required to meet bodily requirements | -carbs -fats -mineral -protein -vitamins -water |
ingestion | consumption |
mastication | chewing |
deglutation | swallowing |
breaking down of food | digestion |
passage of nutrients into blood | absorbtion |
what are the divisions of the mouth | -oral vestibule -oral cavity |
between the teeth and the cheek | oral vestibule |
hollow space behind teeth(communicates with pharynx) | oral cavity or mouth proper |
what anatomy makes up the "mouth" | -oral vestibule -oral cavity, or mouth proper -hard palate -soft palate -uvula -tonsil -tongue -sublingual space -frenulum of toungue |
made up of maxilla and palantine | hard palate |
-folded epithelial tissue -partission between naso and oropharynx | soft palate |
small spindulous cone at back of soft palate | uvula |
mass of lymph tissue in the mucous membrane of the pharynx and base of the tongue | tonsil |
what is the strongest single muscle in the body | tongue |
space under the tongue | sublingual space |
what attaches the tongue | frenulum |
what are the accessories of mastication | teeth |
what are the three pairs of salivary glands | -parotid -submandibular -sublingual |
what enzyme is found in saliva | amylase/ptyalin |
the largest of the salivary glands, found in front of the ear running from the mandibular rami to the mastoid process | parotid gland |
what is the name to the duct of the parotid gland | stenson |
salivary gland that is found under the floor of the mouth, running from the 1st molar to the angle of the mandible | submandibular |
what is the name to the duct of the submandibular gland | wharton |
the smallest salviary gland, found in front of submandibular gland | sublingual gland |
what is the name of the duct of the sublingual gland | sublingual duct |
what do you call a radiographic exam of the salivary glands and their ducts(using contrast) | sailography |
what are the modalities of choice for sailography | -CT -MRI |
what pathologies could be demonstrated using sailography | -inflammatory lesions -tumors -fistulas -diverticula -strictures -calculi |
how many salivary gland can be examined at once using sailography | one |
what are the steps of the sailography exam | -prelim images -pt is given lemons to dilate ducts -contrast is given -fluoro and radiographs are performed -lemons are given again to evacuate contras -radiographs are taken again |
what are the divisions of the pharynx | -nasopharynx -orapharynx -laryngopharynx |
what is the opening in the diaphragm that the esophagus passes through called | esophageal hiatus |
how long is the esophagus | 25 cm |
what are the layer of the esophagus | -muscular -submucosal -mucosal |
what is the location of the esophagus | -posterior to the trachea -originates at C6 and passes through diaphragm at T9 and ends at the stomach at level of T10 |
bellowing out of the esophagus where it meets the stomach | cardiac antrum |
opening between the esophagus and the stomach(controlled by a sphincter of the same name) | cardiac orifice |
achalaysia | cardiac sphincter doesnt open when it should |
large diverticulum at distal portion of the esophagus | zenchers pouch/diverticulum |
which quadrant is the stomach located in | LUQ |
the stomach is what shape | J shaped |
where does the stomach empty into | duodenum |
what gastric enzymes are secreted in the stomach | -pepsin -rennin -gastrin |
what are the fold of the stomach that make up its mucosal layer called | rugae |
what is another name for the serous layer | adventicia layer |
what are the four parts of the stomach | -cardia *cardiac orfice *cardiac sphincter -fundus -body -pyloric portion *pyloric antrum *pyloric canal *pyloric orifice(opening between stomach and duodenum) *pyloric sphincter |
the curvature on the right side of stomach | lesser |
curvature on left side of stomach | greater |
part of stomach name for its proximity to the heart | cardiac notch |
located in the abdominopelvic cavity, it is 22ft long and is divided into three sections | small intestines |
what are the three divisions of the small intestine | -duodenum -jejunum -illeum |
what are the circular folds of the jejunum called(feather like appearance) | plica circularis |
the villi and plica circularis of the small intestine perform what function | -provide more surface area -absorbtion |
smallest portion of the small intestine, 8-10 inches long, and has 4 regions; superior, descending, horizontal, and ascending | duodenum |
second portion of small intestine, 9ft long | jejunum |
last section of small intestine, 13ft long, has a valve between it and the cecum | ileum |
what is the valve between the ileum and the cecum called | ileocecal valve |
a congenital sac or blind pouch found in the lower portion of the ileum, causing extreme abdominal pain | meckel's divertivulum |
caused by TB and unpastuarized milk | peyer's patch |
painful development of bleeding ulcers, can affect from mouth to anus, similar to ulcerative cholitis | chrohn's disease |
5ft long, begins in the RLQ at the ileocecal valve and finishes at the anus | large intestine |
what is the function of large intestine | -reabsorption of fluids -elimination of waste |
what are the parts of the large intestine | -cecum -ascending colon -right colic(hepatic) flexure -transverse colon -left colic(splenic)flexure -descending colon -sigmoid colon -rectum -anal canal and anus |
blind like pouch portion of the large intestine, below the junction of the ileum and colon | cecum |
-located in descending duodenum -connects biliary system with small intestine | -ampulla of vater |
sphincter that controls ampulla of vater | sphincter of oddi |
-found in the ascending colon -holds duodenum in place | angle of treitz |
about 15cm/6in, last section of colon, has both an internal and external sphincter(one is voluntary) | rectum |
sacs of colon that give segmented look | haustra |
longitudinal ribbons of smooth muscle, which contracts to create haustra | taeniae coli |
inflamation of appendix | appendicitis |
inflamitoy bowel disease | ulcerative cholitis |
lots of tiny diverticular in colon wall | diverticular disease |
cholelithiasis | stones in the gallbladder |
both endocrine and exocrine, exocrine function is the production of sugar regulating hormones | pancreas |
nest of cells that secret insulin and glucogon | islets of langerhans |
cholecyst | bile/bag |
pear shaped, located under liver, stimulated by CCK to contract and release bile | gallbladder |
weighs 3lbs, mainly found in the RUQ, consist of two lobes | liver |
what are the two lobes of the liver | right and left |
what are the two subdivisions of the right lobe of the liver | -caudate -quadrate |
seperates the two lobes of the liver | falciform ligament |
network of small blood vessels and connective tissue that forms capsule around liver | capsule of gibson |
the liver has a blank blood supply | dual |
produces bile and filters poisons | liver |
includes the liver, gallbladder, pancreas. produces, stores and delivers bile | billiary system |
made up of right and left hepatic ducts | common hepatic duct |
connects at the top of the gallbladder's neck to the common hepatic duct, it then joins the bile duct and pancreatic duct before dumping into the duodenum | cystic duct |
pancreatic duct is also called what | duct of whirsong |
what is CCK | hormone release in the duodenum of small intestine, which stimulates the gallbladder to release bile as well as the pancreas to release pancreatic juice to aid in digestion |