Fill in the blanks: BSA, GALT, mouth, lactoferrin, Mycobacterium, bile, lower GI

Question

Fill in the blanks: BSA, GALT, mouth, lactoferrin, Mycobacterium, bile, lower GI, stomach, upper GI, IgA, anus, low pH fluids, normal biota, IgE, infection

The gastrointestinal (GI) tract is a long tube, extending from the ________ to the ________, which carries a large variety of _________.

The oral cavity harbors over 600 microbial species, including Lactobacillus and Actinomyces; while the  ____________  has few microbes, the  ____________  is inhabited by Bacteroides, Clostridium, and other species.

Although previously thought to be sterile, the _____________ is now known to harbor at least 128 different species.

In addition, the GI tract encounters millions of new microorganisms every day, requiring this system to possess a variety of defenses against _______.

Secretory ______ can be found on the surfaces of nearly all areas of the GI tract, and  ____________  is found throughout this system as well.

Found in more distinct locations, though, are ________ (saliva), __________ (upper GI), and ___________ (lower GI).

Explanation / Answer

Please find the answers filled in below:

The gastrointestinal (GI) tract is a long tube, extending from the mouth to the anal opening, which carries a large variety of normal biota.

The oral cavity harbors over 600 microbial species, including Lactobacillus and Actinomyces; while the upper GI tract has few microbes, the  lower GI tract is inhabited by Bacteroides, Clostridium, and other species.

Although previously thought to be sterile, the stomach is now known to harbor at least 128 different species.

In addition, the GI tract encounters millions of new microorganisms every day, requiring this system to possess a variety of defenses against infection.

Secretory IgE can be found on the surfaces of nearly all areas of the GI tract, and IgA is found throughout this system as well.

Found in more distinct locations, though, are low pH fluids, lactoferrin, (saliva), bile (upper GI), and normal gut flora (lower GI).

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