Undifferentiated, mitotically active epithelial ce

ATI LPN

ATI LPN Test Bank

Undifferentiated, mitotically active epithelial cells which can replace or regenerate the epithelial lining of the small intestine are located:

A. at the tips of villi B. along the entire villous surface C. in the lamina propria D. along the wall of intestinal crypts

Correct Answer: D

Rationale: Stem cells in crypt walls replenish the epithelium.

The vessel which brings oxygenated, arterial blood from the heart into the liver, with branches in each portal area, is the:

A. hepatic artery B. portal vein C. central vein D. sinusoid

Correct Answer: A

Rationale: The hepatic artery supplies oxygen-rich blood.

The basal surface of hepatocytes is bathed by blood plasma as it flows freely through:

A. bile canaliculi B. portal canals C. the space of Disse D. the central veins

Correct Answer: C

Rationale: Plasma filters into the space of Disse.

In normal, H&E stained material, the cytoplasm of hepatocytes appears:

A. unstained B. deep pink C. dark blue or purple D. yellow, brown or black

Correct Answer: B

Rationale: Cytoplasm is eosinophilic due to mitochondria and organelles.

Which of the following Vitamins is not stored in the Liver?

A. Vitamin A B. Vitamin B C. Vitamin C D. Vitamin D

Correct Answer: C

Rationale: Vitamin C is water-soluble and not stored in the liver; others are fat-soluble and stored.

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