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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