biolab140.txt

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Author:
itzlinds
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142481
Filename:
biolab140.txt
Updated:
2012-03-24 10:52:59
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digestive system anatomy
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digestive system anatomy
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  1. Put the following structures of the digestive tract in order as food travels through the body.

    jejunum
    anus
    rugae
    transverse colon
    rectum
    uvula
    • uvula
    • rugae
    • jejunum
    • transverse colon
    • rectum
    • anus



  2. the transverse colon is labeled by the letter _____.

    Q
    R
    S
    T
    U
    V
    T


  3. Lable the:

    pyloric sphincter
    cardiac region
    fundic region
    sigmoid colon
    rectum
    • pyloric sphincter: R
    • cardiac region: S
    • fundic region: Q
    • sigmoid colon: V
    • rectum: U
  4. The rectum is labeled by the letter ____ in the diagrams



    Q
    R
    S
    T
    U
    V
    U


  5. The right hepatic duct is labeled by the letter ____ in the images.

    A
    B
    C
    D
    E
    F
    D


  6. The cecum is labeled by the letter ____ in the images.

    A
    B
    C
    D
    E
    F
    B


  7. Lable the:
    appendix
    stomach
    cystic duct
    pancreatic duct
    • appendix: A
    • stomach: C
    • cystic duct: E
    • pancreatic duct: F
  8. The pyloric sphincter separates the:

    pharynx and esophagus
    esophagus and stomach
    ileum and colon
    rectum and anus
    stomach and duodenum
    duodenum and stomach
  9. What is the function of the incisors?

    biting off pieces of food
    crushing/grinding food
    puncture/shred food
    they have no known function in humans
    biting off pices of food
  10. Which layer of the GI tract contains many blood and lymph vessels?

    submucosa
    muscularis externa
    serosa
    mucosa
    myenteric
    submucosa
  11. the upper esophageal sphincter separates the:
    pharynx and the esophagus
  12. the lower esophageal sphicter separates the:
    esophagus and the stomach
  13. name the sphincter that is composed of smooth muscle of the muscularis externa:
    internal anal sphincter
  14. name the sphincter that is composed of skeletal muscle of the pelvic diaphragm:
    the external anal sphincter
  15. the hepatopancreatice sphincter spearates the: hep-at-o pnacreatatic
    pancreas and the duodenum
  16. the ileocecal sphincter spearates the:
    ileum of small intestine and the cecum of the large intestine
  17. the internal and external sphincters separate the:
    rectum and the anus
  18. the chisel-like cutting teeth used to bite off a piece of food are called:
    incisors
  19. teeth that are pointed and act to puncutre and shred food are called:
    canines
  20. teeth that have broad surfaces that are adapted for crushing and grinding food are called:
    premolars and molars
  21. a short distance from the liver to the superior margin of the stomach is, it fxns to hold the organs in proper orientation is called:
    lesser omentum (o-men-tum)
  22. a large, fatty, ''apron'' that hangs from the inferior margin of the stomach and loosely covering the small intestine is, nad fxns as a passageway for nerves, vessels, and immnunity is called the:
    greater omentum (o-men-tum)
  23. the fxn of the villi in the small intestine is:
    • increase the absorptive surface area of the small intestine and contain brush border enzymes, chyme must contact brush border for digestion to occur
    • contain absorptive cells and mucus secreting cells
  24. list the four basic layers of the GI tract from the lumen outward:
    • mucosa
    • submucosa
    • muscularis externa
    • serosa
  25. made of columnar epithelium whose cells are disgned for nutrient absorption and for secretion of substances necessary for diegestion is called:
    mucosa layer of GI tract
  26. this layer of the GI tract contains many blood and lymph vessels is called:
    submucosa
  27. the nervus plexus within the submucosa that regulates the secections of the digestive tract is called the:
    submucosal nerve plexus
  28. the layer of the GI tract that is composed of muscle is called the:
    muscularis externa
  29. the layer of the musclaris externa that is responsible for narrowing motions is called the:
    circular smooth muscle
  30. the layer of the musclaris externa that is responsible for shortening motions is called:
    the longtiduinal smooth muslce
  31. between the two layers ( circular and longitudinal) of mucsle is a second nerve plexus that is responsible for regulating motility is called:
    myenteric nerve plexus (my-ent- eric)
  32. the outermost layer of the GI tract that is a thin layer of connective tissue that forms part of the visceral peritoneum is called the:
    serosa
  33. Which of the following is responsible for regulating motility in the GI tract?

    circular smooth muscle
    mucosa
    submucosal nerve plexus
    myenteric nerve plexus
    serosa
    myenteric nerve plexus
  34. Put the following structures in order as a molecule of bile travels from the liver, is stored in the gallbladder, and then moves to the GI tract during a meal. Note: the molecule will travel through the cystic duct twice.


    bile duct
    cystic duct
    duodenem
    common hepatic duct
    gallbladder
    hepatopancreatic sphincter
    right hepatic duct
    cystic duct
    • right hepatic duct
    • common hepatic duct
    • cystic duct
    • gallbladder
    • cystic duct
    • bile duct
    • hepatopancreatic sphincter
    • duodenem
  35. Which of the following structures connects the stomach to the liver and keeps these organs in the proper orientation?

    round ligament
    pancreatic duct
    lesser omentum
    falciform ligament
    greater omentum
    lesser omentum

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