Digestive System Histology Quiz
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Questions and Answers

What are the basic processes of the digestive system?

  • Ingestion, secretion, digestion, absorption, and excretion
  • Ingestion, secretion, mixing and propulsion, digestion, absorption, and excretion
  • Ingestion, secretion, mixing and propulsion, motility, digestion, absorption, and defecation (correct)
  • Ingestion, propulsion, digestion, absorption, and defecation

    • What is the composition of the alimentary canal?

  • Mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anus
  • Pharynx, stomach, small intestine, and rectum
  • Mouth, esophagus, stomach, small intestine, and large intestine (correct)
  • Esophagus, stomach, small intestine, large intestine, and appendix

    • What are the four layers of the alimentary canal?

  • Mucosa, muscularis mucosa, muscularis externa, and adventitia
  • Mucosa, submucosa, muscularis mucosa, and serosa
  • Mucosa, submucosa, muscularis externa, and serosa (or adventitia) (correct)
  • Mucosa, submucosa, muscularis externa, and adventitia

    • What are the four regions of the stomach?

    <p>Cardia, fundus, body, and pylorus</p> Signup and view all the answers

    What is the composition of the gastric histology?

    <p>Mucosa, submucosa, muscularis mucosa, and serosa</p> Signup and view all the answers

    What is the predominant cell type in the glands of the pyloric region of the stomach?

    <p>Mucus cells</p> Signup and view all the answers

    What is the composition of the tongue?

    <p>A mass of striated muscle covered by a mucous membrane with intrinsic and extrinsic muscles and four types of lingual papillae</p> Signup and view all the answers

    What is the function of the four regions of the stomach?

    <p>To store food</p> Signup and view all the answers

    What is the composition of the alimentary canal?

    <p>Mucosa, submucosa, muscularis mucosa, muscularis externa, and serosa</p> Signup and view all the answers

    What is the epithelial lining of the stomach composed of?

    <p>Mucus cells, parietal cells, chief cells, and DNES cells</p> Signup and view all the answers

    What is the composition of the oral cavity?

    <p>Lips, three regions, and mucosa</p> Signup and view all the answers

    What type of muscle is the tongue composed of?

    <p>Striated muscle</p> Signup and view all the answers

    What is the predominant cell type in the cardiac region of the stomach?

    <p>Mucus cells</p> Signup and view all the answers

    What is the composition of the esophagus?

    <p>A muscular tube covered by an adventitia</p> Signup and view all the answers

    What is the most common aquatic environment where Vibrio can be found?

    <p>All of the above</p> Signup and view all the answers

    What is the temperature range for Vibrio growth?

    <blockquote> <p>20°C</p> </blockquote> Signup and view all the answers

    What disease is caused by Vibrio cholerae serogroups O1 and O139?

    <p>Epidemic and pandemic cholera</p> Signup and view all the answers

    What is the common flagellar antigen and somatic antigen shared by Vibrio cholerae O1, O139 and non-O1?

    <p>H Antigen and O Antigen</p> Signup and view all the answers

    What is the best growth condition for Vibrio cholerae?

    <p>pH 8.5-9.5</p> Signup and view all the answers

    What is the family name of Vibrio?

    <p>Vibrionaceae</p> Signup and view all the answers

    What is the temperature range for Vibrio to thrive?

    <blockquote> <p>20°C</p> </blockquote> Signup and view all the answers

    What is the name of the pandemic of cholera caused by Vibrio cholera?

    <p>Asiatic Cholera</p> Signup and view all the answers

    What is the primary reason for the significant rise of Vibrio isolation?

    <p>Decrease in ocean water temperature</p> Signup and view all the answers

    Which type of Vibrio cholerae is associated with epidemic cholera?

    <p>Vibrio cholerae O1</p> Signup and view all the answers

    What is the function of the B subunit of the Cholera Toxin?

    <p>Binds to the GM1 ganglioside receptor on the cell membrane</p> Signup and view all the answers

    What is the characteristic feature of Vibrio when grown in a solid media?

    <p>Peritrichous, unsheathed flagella</p> Signup and view all the answers

    Study Notes

    Histology of the Digestive System

    • The digestive system is composed of the gastrointestinal tract/alimentary canal and accessory digestive organs.
    • The basic processes of the digestive system include ingestion, secretion, mixing and propulsion, motility, digestion, absorption, and defecation.
    • The oral cavity is composed of lips, three regions, and mucosa, which is lined by stratified squamous nonkeratinized epithelium.
    • Humans have two sets of teeth: 20 deciduous teeth replaced by 32 permanent teeth composed of 20 succedaneous teeth and 12 molars.
    • The tongue is a mass of striated muscle covered by a mucous membrane with intrinsic and extrinsic muscles and four types of lingual papillae.
    • The alimentary canal includes the esophagus, stomach, small intestine (duodenum, jejunum, and ileum), large intestine (cecum, colon, rectum, anal canal, and appendix).
    • The alimentary canal is composed of four layers: mucosa, submucosa, muscularis externa, and serosa (or adventitia).
    • The esophagus is a muscular tube covered by an adventitia until it pierces the diaphragm, after which it is covered by a serosa.
    • The stomach is composed of four regions: gastric cardia, fundus, body (corpus), and pylorus (pyloric antrum).
    • The epithelial lining of the stomach invaginates into the mucosa, forming gastric pits (foveolae), which are shallowest in the cardiac region and deepest in the pyloric region.
    • The gastric histology is composed of mucosa, submucosa, muscularis mucosa, muscularis externa, and serosa. The fundic mucosa is composed of mucus cells, parietal cells, chief cells, and DNES cells.
    • The mucosa of the cardiac region differs from the pyloric region in terms of the depth of the gastric pits and the predominant cell type in the glands.

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    Description

    Test your knowledge of the digestive system histology with this quiz! From the oral cavity to the large intestine, this quiz covers the basic processes and structures of the alimentary canal and accessory digestive organs. Learn about the different regions of the stomach and the composition of its mucosa, submucosa, muscularis mucosa, muscularis externa, and serosa. This quiz is perfect for students studying anatomy and physiology or anyone interested in learning more about the digestive system.

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