Free DMD Oral Anatomy & Physiology Questions and Answers

Question 1

What is the primary function of the oral cavity?

Accepted Answer

To initiate digestion and facilitate speech

Answer

The oral cavity, or mouth, serves as the entry point for the digestive system, where mechanical digestion (chewing) and chemical digestion (saliva enzymes) begin. Beyond digestion, the tongue, lips, and teeth within the oral cavity are essential for articulating sounds, making it vital for clear speech and communication.

Question 2

What is the role of salivary glands in the oral cavity?

Accepted Answer

To aid in digestion and lubrication

Answer

Salivary glands produce saliva, which plays several critical roles in the oral cavity. Saliva contains enzymes like amylase that begin the chemical breakdown of carbohydrates, initiating digestion. It also lubricates food, making it easier to chew and swallow, and helps maintain oral hygiene by washing away food particles and neutralizing acids.

Question 3

Which part of the tooth is responsible for sensation?

Accepted Answer

Pulp

Answer

The pulp is the innermost part of the tooth, containing nerves, blood vessels, and connective tissue. It is responsible for providing nutrients to the tooth and for sensing stimuli like pain, temperature, and pressure. The enamel and dentin layers protect the sensitive pulp.

Question 4

What is the primary function of the incisors?

Accepted Answer

Cutting food

Answer

Incisors are the eight front teeth, four on the top and four on the bottom, characterized by their sharp, chisel-like edges. Their primary function is to bite into and cut food into smaller, manageable pieces. This initial mechanical breakdown is crucial for the subsequent stages of digestion.

Question 5

What is the role of the temporomandibular joint (TMJ)?

Accepted Answer

To enable jaw movement for chewing and speaking

Answer

The temporomandibular joint (TMJ) is a complex joint connecting the jawbone (mandible) to the skull. It acts like a sliding hinge, allowing for a wide range of jaw movements, including opening and closing the mouth, side-to-side motion, and forward/backward movement. These movements are essential for vital functions such as chewing, speaking, and swallowing.

DMD - Doctor of Medicine in Dentistry Practice Test

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Free DMD Oral Anatomy & Physiology Questions and Answers