Nokea
What is frenulum?
- A. It is the fold by which tongue is attached to the floor of oral cavity.
- B. It is uvula is present on pharyngeal wall
- C. It is a tonsil like structure on the lateral walls of palate
- D. It is V-shaped furrow which divides the surfaces of tongue
Correct Answer: A
Rationale: The frenulum is a fold of tissue that anchors the tongue to the floor of the mouth.
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Which one differ from the category of other three-
- A. Gastrin
- B. Glucagon
- C. Secretin
- D. Ptyalin
Correct Answer: D
Rationale: Ptyalin is an enzyme, while the others are hormones.
Which of these human teeth are used for grinding?
- A. incisors
- B. canines
- C. premolars
- D. molars
Correct Answer: D
Rationale: Molars are flat, broad teeth specialized for grinding food.
Which statement about chemical digestion in the human alimentary canal is correct?
- A. Digestion of carbohydrates is completed in the colon.
- B. Enzymes are secreted to break down cellulose in the duodenum.
- C. Protein digestion is completed in the ileum.
- D. The stomach secretes enzymes to break down starch.
Correct Answer: C
Rationale: Protein digestion begins in the stomach with pepsin and is completed in the ileum by proteolytic enzymes from the pancreas and intestinal mucosa.
Of the following, which organ does food NOT pass through?
- A. pancreas
- B. stomach
- C. mouth
- D. small intestine
Correct Answer: A
Rationale: Food does not pass through the pancreas; it produces digestive enzymes that aid digestion.
Infants' gastric juice contains
- A. Nuclease, pepsinogen, lipase
- B. Maltase, pepsinogen, rennin
- C. Amylase, rennin, pepsinogen
- D. Pepsinogen, lipase, rennin
Correct Answer: D
Rationale: Infants' gastric juice contains pepsinogen, lipase, and rennin to aid in milk digestion.