MCQ on Saliva
Saliva MCQ Questions with Answers (Parotid Glands, Salivary Glands)
Frequently Asked MCQ quiz on the Saliva with Answers – MCQ Quiz for Competitive Exam Preparation – These questions given will be useful for competitive exams preparation. We will be updating more mcq regularly, please follow our website regularly.
What is saliva primarily composed of?
a) Water and electrolytes
b) Proteins and lipids
c) Enzymes and mucus
d) Sugars and starches
Answer: a) Water and electrolytes
Which gland produces the majority of saliva in the mouth?
a) Submandibular gland
b) Sublingual gland
c) Parotid gland
d) Buccal gland
Answer: a) Submandibular gland
The parotid gland secretes saliva through which duct into the mouth?
a) Stensen’s duct
b) Wharton’s duct
c) Bartholin’s duct
d) Rivinus’ duct
Answer: a) Stensen’s duct
Which of the following is not a function of saliva?
a) Initiating digestion of carbohydrates
b) Lubricating food for swallowing
c) Protecting teeth from decay
d) Regulating body temperature
Answer: d) Regulating body temperature
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Which enzyme in saliva is responsible for initiating the breakdown of starch into maltose?
a) Salivary amylase
b) Lipase
c) Pepsin
d) Lysozyme
Answer: a) Salivary amylase
What is the pH range of saliva in a healthy individual?
a) 1.0 – 2.0
b) 3.0 – 4.0
c) 5.5 – 7.0
d) 7.5 – 8.5
Answer: c) 5.5 – 7.0
Saliva plays a crucial role in maintaining oral health by:
a) Preventing bacterial growth
b) Neutralizing stomach acid
c) Providing a medium for tooth remineralization
d) All of the above
Answer: d) All of the above
Which of the following substances is not found in saliva?
a) Lysozyme
b) Urea
c) Immunoglobulins
d) Bile salts
Answer: d) Bile salts
Which of the following is not a minor salivary gland?
a) Sublingual gland
b) Submandibular gland
c) Palatine gland
d) Buccal gland
Answer: b) Submandibular gland
What is the function of lysozyme in saliva?
a) Breaks down lipids
b) Initiates protein digestion
c) Destroys bacteria cell walls
d) Stimulates salivary gland secretion
Answer: c) Destroys bacteria cell walls
Which component of saliva helps in the formation of the bolus during swallowing?
a) Mucus
b) Salivary amylase
c) Bicarbonate ions
d) Immunoglobulins
Answer: a) Mucus
Which of the following hormones stimulates saliva production?
a) Insulin
b) Glucagon
c) Aldosterone
d) Acetylcholine
Answer: d) Acetylcholine
What is the function of bicarbonate ions in saliva?
a) Activates salivary amylase
b) Maintains acidic pH in the mouth
c) Neutralizes acids from food and bacteria
d) Enhances mucus secretion
Answer: c) Neutralizes acids from food and bacteria
Which condition is characterized by decreased saliva production?
a) Xerostomia
b) Sialorrhea
c) Glossitis
d) Stomatitis
Answer: a) Xerostomia
Which taste sensation is not detected by receptors in saliva?
a) Sweet
b) Salty
c) Sour
d) Umami
Answer: d) Umami
Which of the following is a function of the sublingual gland?
a) Producing a watery saliva rich in enzymes
b) Producing a mucous saliva rich in lubricants
c) Producing a saliva rich in serous cells
d) Producing a saliva with high concentrations of bicarbonate ions
Answer: b) Producing a mucous saliva rich in lubricants
Which condition is characterized by excessive salivation?
a) Xerostomia
b) Sialadenitis
c) Sialolithiasis
d) Sialorrhea
Answer: d) Sialorrhea
Which enzyme in saliva aids in the breakdown of fats?
a) Salivary amylase
b) Lipase
c) Pepsin
d) Trypsin
Answer: b) Lipase
What is the term for the process of swallowing?
a) Deglutition
b) Mastication
c) Digestion
d) Peristalsis
Answer: a) Deglutition
Which component of saliva helps in buffering acidic foods and beverages?
a) Salivary amylase
b) Bicarbonate ions
c) Lysozyme
d) Immunoglobulins
Answer: b) Bicarbonate ions
Which disorder is characterized by the formation of calcified masses in the salivary ducts?
a) Xerostomia
b) Sialadenitis
c) Sialolithiasis
d) Sialorrhea
Answer: c) Sialolithiasis
Which condition is characterized by inflammation of the salivary glands?
a) Xerostomia
b) Sialadenitis
c) Sialolithiasis
d) Sialorrhea
Answer: b) Sialadenitis
Which component of saliva helps in the initial breakdown of food particles through mechanical digestion?
a) Mucus
b) Salivary amylase
c) Lysozyme
d) Bicarbonate ions
Answer: a) Mucus
Which of the following is a function of salivary immunoglobulins?
a) Initiating protein digestion
b) Inhibiting bacterial growth
c) Enhancing taste sensation
d) Promoting mucus secretion
Answer: b) Inhibiting bacterial growth
Which salivary gland is located beneath the tongue?
a) Submandibular gland
b) Sublingual gland
c) Parotid gland
d) Buccal gland
Answer: b) Sublingual gland
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