Exam 3: Respiratory/digestive (part 3)

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Only digestive structure with three muscle layers

C Stomach

Produces intrinsic factor.

C Stomach

Identify three ways the small intestine is modified to increase the surface area for digestion and absorption

Circular folds - slow chyme Villi - increase surface area Microvilli - bear enzymes & increase surface area

Cell type specialized to secrete mucus into the lumen of the intestinal tract

D Goblet cells

Produces enzymes that break down all categories of foodstuffs

D Pancreas

What pressure will be present in the space labeled "4"? A) alveolar pressure B) atmospheric pressure C) subalveolar pressure D) intrapleural pressure E) intrapulmonary pressure

D) intrapleural pressure

Bacteria process undigested chyme from the small intestine.

E Large intestine

What is the relationship between the pressures at label "8"? A) P outside > P inside B) P outside - P inside C) P outside = P inside D) P outside + P inside E) P outside < P inside

E) P outside < P inside

Main function is to filter and process the nutrient-rich blood delivered to it

A Liver

Receives blood via the hepatic portal system

A Liver

Structures that increase the absorptive area of the small intestine

A Villi

Absorptive cells that line the intestinal tract

B Enterocytes

Contains the brush border enzymes that complete digestion of carbohydrates and proteins

B Small intestine

Increases surface area for absorption via villi and microvilli

B Small intestine

What is the relationship between the pressures at label "3"? A) P outside - P inside B) P outside > P inside C) P outside < P inside D) P outside = P inside E) P outside + P inside

B) P outside > P inside

How does the pressure "P4" at label "4" compare to the pressure "P5" at label "5"? A) P4 is lower than P5 during inhalation and then higher during exhalation. B) P4 is always lower than P5. C) P4 always equals P5. D) P4 is higher than P5 during inhalation and then lower during exhalation

B) P4 is always lower than P5.


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