What structure prevents food from entering the nasopharynx during swallowing

There are three phases of gastric secretion. The cephalic phase occurs ________.

The presence of acidic chyme in the beginning of the small intestine will:

The function of the hepatic portal circulation is to:

Which high pressure blood supply provides nutrients to the lungs?

Possible causes of hypoxia include ________.

As a triage nurse in the ER, you begin the assessment of an elderly patient complaining of bloody diarrhea and severe stomach cramps. You find the patient has a fever of 104°F as well, and is showing signs of dehydration. IV fluids are administered while further analysis of the patient continues. Specimen collection from the patient is ordered for microbial analysis in the hospital laboratory.  Microscopic analysis revealed the presence of gram-negative bacilli in the sample that was collected. Based upon this information, you picture in your mind which of the following images?

Mrs. Hall, the school nurse, noticed a second grader scratching and pulling at the back of her pants. She complained that her bottom itched, mostly in the early morning hours. Since another child in the student’s class had recently been diagnosed with Enterobius vermicularis, or pinworm infection, Mrs. Hall contacted the girl’s mother. She immediately agreed to follow up with her pediatrician. Helminths belong to which domain of life?

Which statement is not a characteristic of biofilms?    

Gram positive and gram negative bacteria differ in all except