Which of the following is not a tissue layer of th

ATI LPN

ATI LPN Test Bank

Which of the following is not a tissue layer of the alimentary canal

A. mucosa B. muscularis C. secretin D. serosa

Correct Answer: C

Rationale: Secretin is a hormone, not a tissue layer.

There are ________ primary teeth and __________ permanent teeth

A. 20, 32 B. 32,20 C. 30, 20 D. 20, 30

Correct Answer: A

Rationale: Humans have 20 deciduous and 32 permanent teeth.

The portion of the small intestine that is attached to the pylorus of the stomach is the

A. duodenum B. colon C. jejunum D. ileum

Correct Answer: A

Rationale: The duodenum connects to the pylorus.

Decreased levels of bile salts in the bile would interfere with

A. digestion of vitamins B. fat digestion C. protein digestion D. digestion of disaccharides

Correct Answer: B

Rationale: Bile salts emulsify fats for digestion.

Chemical digestion of carbohydrates begins in the

A. esophagus B. stomach C. duodenum D. oral cavity

Correct Answer: D

Rationale: Carbohydrate digestion starts in the oral cavity with salivary amylase breaking down starches into simpler sugars.

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