The lab TA was recently putting away prepared tissue slides after lab last week, when she...

The lab TA was recently putting away prepared tissue slides after lab last week, when she accidentally dropped the slide holder spilling all the slides. As she was picking them all up, she notices that the labels had come off of two of the slides. Based on the remaining slides, she figured out that one slide is from the intestine and the other slide is from the esophagus. Based on their location in the body, how could you figure out which slide is which? For each location provide the following information:

The type of epithelium present.
The function of the above identified epithelium in that location.

Solutions

Expert Solution

The esophagus tissue - The esophagus is a muscular tube that transports food from the pharynx to the stomach. It is lined by a stratified squamous epithelium and has a prominent muscularis mucosa and thick muscularis externa. The muscularis externa of the esophagus is unique in that it transitions from striated to smooth muscle over the length of the tube. The esophagus ends in the gastro-esophageal junction.

The intestine tissue - Enterocytes are the tall columnar epithelial cells that make up most of the intestinal lining and perform most of the intestinal digestive and absorptive functions.Goblet cells store and secrete mucous.Paneth cells serve an immune function and are found at the base of the crypts.Enteroendocrine cells produce hormones that govern motility and secretion, just as they do in the stomach.Stem cells replenish the other cell types and are found at the base of the crypts.

gladiator answered 1 year ago

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