Nokea
Homeostasis is best described as:
- A. The process by which we change our external environment so that we are comfortable
- B. A process that uses hormones to adjust our bodily functions
- C. A process by which nerves and hormones operate together to keep the internal environment stable no matter what the external conditions
- D. A process by which the nerves make us respond to danger
Correct Answer: C
Rationale: Homeostasis maintains internal stability using nerves and hormones despite external changes.
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The muscular tube that extends from the mouth to the anus is called:
- A. the gullet
- B. the intestine
- C. the colon
- D. the alimentary canal
Correct Answer: D
Rationale: The alimentary canal, also known as the digestive tract, is the continuous muscular tube extending from the mouth to the anus, encompassing all digestive organs.
Using the figure shown, indicate in which location would a client with an inflamed appendix likely have pain and tenderness?
- A. Right lower quadrant
- B. Left lower quadrant
- C. Right upper quadrant
- D. Left upper quadrant
Correct Answer: A
Rationale: The appendix is located in the right lower quadrant, where appendicitis pain is typically felt.
Which of the following statements are true about the Pancreatic juice?
- A. Pancreatic juice is acidic.
- B. Pancreatic juice is alkaline.
- C. Pancreatic juice is neutral.
- D. All of the above.
Correct Answer: B
Rationale: Pancreatic juice is alkaline due to its bicarbonate content, which neutralizes the acidic chyme entering the duodenum.
All of the following are true of the stomach EXCEPT?
- A. Pepsinogen is activated to pepsin by HCl
- B. Parietal cells secrete intrinsic factor
- C. Chief cells secrete pepsinogen
- D. The pyloric region is a major site for nutrient absorption
Correct Answer: D
Rationale: The pyloric region primarily functions as a regulator of food movement into the small intestine, not as a major site for nutrient absorption.
Which process matches the definition: Thin, tough, outer layer of the alimentary tract, which enables it to move smoothly against other organs?
- A. Mucosa
- B. Submucosa
- C. Muscularis
- D. Serosa
Correct Answer: D
Rationale: The serosa is the outermost layer of the GI tract, allowing smooth movement against adjacent organs.