Digestive Anatomy

Digestive System consists of?
mouth, pharynx, esophagus, stomach, hepatobiliary system, small intestine, large intestine
Digestive system begins and ends where?
Lips and anus
Alimentary canal extends to where?
entire length of digestive tract
Mouth contains what?
Salivary glands, teeth cheeks, tongue
Salivary glands digest begin to digest what substance?
starches
Salivary glands contain what glands?
parotids, submandibular and sublingual
Parotid gland is the ________ of the salivary glands?
largest
Sublingual gland is the _________ of the salivary glands?
smallest
Teeth perform what function?
masticationc
cheeks contain what muscles?
buccinator muscles
Tongue is covered by what?
mucous membrane and papillae
Tongue is both a _________ and ________?
sensory organ and muscle
Tongue function?
Pushes ingested material to back of oral cavity.
Deglutition is the act of ?
swallowing
Oropharynx is the beginning of what?
True digestive tract
What muscles in the esophagus move ingested material along the tract?
Involuntary
Esophagus has what two sphincters?
Upper and lower
Lower esophageal sphincter AKA
cardiac sphincter
Stomach mixes what to form chyme?
ingested material with juices
Muscular structures of stomach walls is important for what?
mixing action
What are the three muscular layers of the stomach wall?
Longitudinal, circular and oblique
Structures of the stomach consist of what?
fundus, body, pylorus
Stomach does what with chyme?
empties chyme into small intestine
Stomach empties chyme into small intestine via ____________?
pyloric sphincter
Hepatobiliary system consists of what?
Liver, gall bladder and pancreas
Liver produces what?
bile
Bile is stored where?
gall bladder
Bile does what?
dissolves fat
Sinusoids are where _______ takes place?
filtration
Portal venous system does what?
carries bloood from digestive tract to liver where it is filtrated before going to vena cava
Liver does what function?
stores glycogen and changes to glucoagon as needed to maintain blood sugar levels between meals
Head of the pancreas is located where?
curve of the duodenum
Tail of the pancreas touches the __________?
spleen
Pancreatic ducts extends ?
the length of the pancreas and empties at same point as the common bile duct
the small intestine is how many feet long?
20
Small intestine consists of ?
duodenum, jejunum and ileum
____________ takes place in the small intestine?
Absorption
villi, microvilli and folds of membrane in the small intestine do what?
Provide a large surface area for absorption
Large intestine is __________ _________ of the digestive tract
widest portion
There are no __________ in the large intestine?
microvilli
haustra AKA
outpouchings
appendix is adjacent to what?
cecum
__________ is the begnning and ________ is the end of the large intestine?
cecum, rectum
The hepatic flexure can be found where in the large intestine?
ascending colon
The splenic flexure can be found where in the large intestine?
transverse colon
large intestine consists of what?
ascending colon, transverse colon, descending colon, sigmoid colon, rectum and anus
__________ ___________ lines the abdominal cavity?
parietal peritoneum
parietal peritoneum consists of what?
Mesentery, visceral peritoneum, omentum
Mesentery description?
fan-shaped projection of parietal peritoneum extends from posterior abdominal wall.
Mesentery is also known as?
dorsal mesentery
Which peritoneum surrounds each organ in the large intestine?
visceral
Omentum consists of ?
lesser and greater
Lesser omentum description?
attaches from liver to lesser curve of the stomach and first part of the duodenum
Greater omentum description?
continuation of greater curve of stomach and duodenum to transverse colon
Retroperitoneum is located where?
area behind peritoneum
Retroperitoneum contains what?
pancreas head, kidneys, adrenal glands, ureters, bladder, aorta and inferior vena cava, part of esophagus, part of duodenum, ascneding and descending colon and rectum

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