Nokea
Which of the following describes one function of the stomach?
- A. To introduce carbohydrates to food.
- B. To remove excess water from food.
- C. To temporarily store food.
- D. To absorb nutrients into the bloodstream.
Correct Answer: C
Rationale: The stomach temporarily stores food, mixing it with gastric juices for digestion.
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Match each term with the correct description: carries urine from bladder to outside of the body
- A. urethra
- B. urinary system
- C. bladder
- D. kidneys
Correct Answer: A
Rationale: The urethra carries urine from the bladder to the outside.
Kupffer cells, one of the following is not true:
- A. May contain Hemosiderin granules
- B. Motile within liver blood sinusoids
- C. Phagocytic cells present mainly in space of Disse
- D. Form part of the liver sinusoidal wall
Correct Answer: C
Rationale: Kupffer cells are phagocytic and part of the sinusoidal wall, but they are in the lumen, not the space of Disse.
The pH in the mouth decreases after eating. Which statement explains the decrease in pH?
- A. Bacteria release acids when respiring food substances.
- B. Enzymes in saliva release acids during digestion.
- C. Food substances become alkaline when chewed.
- D. Salivary glands release an alkaline solution.
Correct Answer: A
Rationale: Bacterial metabolism of food releases acids, lowering the pH in the mouth.
Choose the answer which lists the correct order of the digestion process.
- A. A, C, D, B
- B. C, D, A, B
- C. C, A, D, B
- D. D, C, A, B
Correct Answer: B
Rationale: The correct order is: Food is ingested (C), digested (D), nutrients absorbed (A), and undigested food eliminated (B).
Which is the longest organ of digestive system in human body?
- A. Pancreatic duct
- B. Small intestine
- C. Large intestine
- D. Esophagus
Correct Answer: B
Rationale: The small intestine is the longest part of the digestive system, measuring about 7 meters (22 feet). Its main functions are to complete the digestion of food and to absorb nutrients.