C4 - Rad Practice - Normal Anatomy: Intraoral Images

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C4 - Rad Practice - Normal Anatomy: Intraoral Images - Quiz

Practice activity


Questions and Answers
  • 1. 

    The dense outer layer of bone is called?

    • A.

      Cortical bone

    • B.

      Cancellous bone

    • C.

      Periodonal ligament

    • D.

      Alveolar bone

    Correct Answer
    A. Cortical bone
    Explanation
    The dense outer layer of bone is called cortical bone. It is also known as compact bone. Cortical bone is strong and provides support and protection to the body. It forms the outer shell of most bones and is composed of tightly packed bone tissue. Cancellous bone, on the other hand, is also known as spongy or trabecular bone. It is found inside the cortical bone and has a spongy, porous structure. Periodontal ligament refers to the connective tissue that connects the tooth to the surrounding bone, while alveolar bone refers to the bone that supports and surrounds the teeth.

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  • 2. 

    The upper jaw is composed of ______ paired bones?

    • A.

      One

    • B.

      Two

    • C.

      Three

    • D.

      Four

    Correct Answer
    B. Two
    Explanation
    The upper jaw is composed of two paired bones. This means that there are two identical bones on each side of the upper jaw, resulting in a total of two paired bones.

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  • 3. 

    1.The largest and strongest bone in the face is known as the?

    • A.

      Maxillae

    • B.

      Zygomatic process

    • C.

      Mandible

    • D.

      Facial

    Correct Answer
    C. Mandible
    Explanation
    The mandible is the correct answer because it is the largest and strongest bone in the face. It forms the lower jaw and is responsible for supporting the teeth and allowing for movements such as chewing and speaking. The mandible also plays a crucial role in maintaining the structure and shape of the face.

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  • 4. 

    The maxillae forms all of the following structures, except?

    • A.

      Cheek

    • B.

      Floor of the orbit of the eye

    • C.

      Sides and floor of the nasal cavities

    • D.

      Hard palate

    Correct Answer
    A. Cheek
    Explanation
    The maxillae form the floor of the orbit of the eye, the sides and floor of the nasal cavities, and the hard palate. However, the maxillae do not form the cheek. The cheek is primarily formed by the muscles of the face and the skin.

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  • 5. 

    Identify the radiolucent area in this image

    • A.

      Incisive Foramen

    • B.

      Median palatal suture

    • C.

      Lateral fossa

    • D.

      Nasal septum

    Correct Answer
    A. Incisive Foramen
    Explanation
    The radiolucent area in the image is the Incisive Foramen. This is the correct answer because the Incisive Foramen is a small opening located in the midline of the maxilla, just behind the central incisors. It appears as a radiolucent area on a radiograph due to its hollow structure. The other options mentioned in the question, such as the median palatal suture, lateral fossa, and nasal septum, do not correspond to the radiolucent area in the image.

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  • 6. 

    Identify the radiolucent area in this image

    • A.

      Median palatal suture

    • B.

      Incisive Foramen

    • C.

      Lateral fossa

    • D.

      Nasal septum

    Correct Answer
    A. Median palatal suture
    Explanation
    The radiolucent area in the image is the median palatal suture. The median palatal suture is a line of fusion between the two halves of the maxilla bone in the midline of the palate. It appears as a radiolucent line on a dental radiograph, indicating the absence of bone in that area. The other options, such as the incisive foramen, lateral fossa, and nasal septum, are not radiolucent areas in this image.

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  • 7. 

    Identify the radiolucent area in this image

    • A.

      Median palatal suture

    • B.

      Incisive Foramen

    • C.

      Lateral fossa

    • D.

      Nasal septum

    Correct Answer
    C. Lateral fossa
    Explanation
    The radiolucent area in the image is the lateral fossa.

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  • 8. 

    Identify the radiopaque area in this image

    • A.

      Median palatal suture

    • B.

      Incisive Foramen

    • C.

      Lateral fossa

    • D.

      Nasal septum

    Correct Answer
    D. Nasal septum
    Explanation
    The radiopaque area in the image is the nasal septum. The nasal septum is a structure that divides the nasal cavity into two separate chambers. In the image, it appears as a dense and opaque area, indicating that it is radiopaque. The other options mentioned, such as the median palatal suture, incisive foramen, and lateral fossa, do not appear as radiopaque areas in the image.

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  • 9. 

    Identify the radiolucent area in this image

    • A.

      Maxillary sinus

    • B.

      Inverted Y

    • C.

      Maxillary tuberosity

    • D.

      Zygomatic process

    Correct Answer
    A. Maxillary sinus
    Explanation
    The correct answer is maxillary sinus. In this image, the radiolucent area corresponds to the maxillary sinus, which is a cavity located in the maxilla bone. The maxillary sinus appears as a dark area on the radiograph due to its air-filled nature. It is an important anatomical structure to consider when interpreting dental radiographs, as it can have implications for dental procedures and pathology.

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  • 10. 

    Identify the radiopaque area in this image

    • A.

      Maxillary sinus

    • B.

      Inverted Y

    • C.

      Maxillary tuberosity

    • D.

      Zygomatic process

    Correct Answer
    B. Inverted Y
    Explanation
    The radiopaque area in the image is referred to as the Inverted Y. This term is used to describe the appearance of the intersection of the maxillary sinus and the nasal cavity on a radiograph. The Inverted Y shape is formed by the superimposition of the anterior and posterior walls of the maxillary sinus, creating a distinct Y-shaped radiopaque area.

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  • 11. 

    Identify the radiopaque area in this image

    • A.

      Maxillary sinus

    • B.

      Inverted Y

    • C.

      Maxillary tuberosity

    • D.

      Zygomatic process

    Correct Answer
    C. Maxillary tuberosity
    Explanation
    The radiopaque area in the image is the maxillary tuberosity. The maxillary tuberosity is the rounded prominence of bone located posterior to the last molar in the upper jaw. It appears radiopaque on the image because it is denser and absorbs more X-rays compared to the surrounding tissues.

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  • 12. 

    Identify the radiopaque area in this image

    • A.

      Maxillary sinus

    • B.

      Inverted Y

    • C.

      Maxillary tuberosity

    • D.

      Zygomatic process

    Correct Answer
    D. Zygomatic process
    Explanation
    The radiopaque area in the image is the zygomatic process. The zygomatic process is a bony projection of the maxilla that extends towards the zygomatic bone. It appears radiopaque on the image due to its dense composition, which prevents the X-rays from passing through easily. The other options, such as the maxillary sinus, inverted Y, and maxillary tuberosity, do not show the same level of radiopacity as the zygomatic process.

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  • 13. 

    Identify the radiolucent area in this image.

    • A.

      Lingual foramen

    • B.

      Mental ridge

    • C.

      Mental foramen

    • D.

      Mylohyoid ridge

    Correct Answer
    A. Lingual foramen
    Explanation
    The radiolucent area in the image is the lingual foramen. The lingual foramen is a small opening located on the lingual surface of the mandible, near the midline. It allows for the passage of blood vessels and nerves. In the image, the lingual foramen appears as a dark, empty space, indicating its radiolucent nature. The other options, such as the mental ridge, mental foramen, and mylohyoid ridge, do not match the characteristics of the radiolucent area shown in the image.

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  • 14. 

    Identify the radiopaque area in this image.

    • A.

      Lingual foramen

    • B.

      Mental ridge

    • C.

      Mental foramen

    • D.

      Mylohyoid ridge

    Correct Answer
    B. Mental ridge
    Explanation
    The radiopaque area in the image is referred to as the mental ridge. The mental ridge is a bony prominence located on the anterior aspect of the mandible, specifically on the facial surface of the mandibular symphysis. It is a radiopaque structure that can be visualized on a dental radiograph. The mental ridge serves as an attachment site for muscles and provides support for the soft tissues of the chin.

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  • 15. 

    Identify the radiolucent area in this image.

    • A.

      Lingual foramen

    • B.

      Mental ridge

    • C.

      Mental foramen

    • D.

      Mylohyoid ridge

    Correct Answer
    C. Mental foramen
    Explanation
    The radiolucent area in the image is identified as the mental foramen. The mental foramen is a small opening located on the mandible, near the premolar teeth. It allows for the passage of nerves and blood vessels. In the radiograph, the mental foramen appears as a dark, radiolucent area due to the absence of bone density in that region.

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  • 16. 

    Identify the radiopaque area in this image.

    • A.

      Lingual foramen

    • B.

      Mental ridge

    • C.

      Mental foramen

    • D.

      Mylohyoid ridge

    Correct Answer
    D. Mylohyoid ridge
    Explanation
    The correct answer is "mylohyoid ridge." The mylohyoid ridge is a radiopaque area that can be seen on dental radiographs. It is a bony ridge located on the lingual aspect of the mandible, running horizontally from the premolar region to the midline. It represents the attachment site for the mylohyoid muscle, which is responsible for elevating the floor of the mouth during swallowing and speaking.

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  • 17. 

    Identify the radiolucent area in this image.

    • A.

      Mandibular canal

    • B.

      Internal oblique ridge

    • C.

      Submandibular fossa

    • D.

      Coronoid process

    Correct Answer
    A. Mandibular canal
    Explanation
    The radiolucent area in the image is the mandibular canal. This is the canal within the mandible that houses the inferior alveolar nerve and blood vessels. It appears as a dark area on the radiograph due to the absence of dense structures such as bone. The other options, internal oblique ridge, submandibular fossa, and coronoid process, do not represent radiolucent areas in this image.

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  • 18. 

    Identify the radiopaque area in this image.

    • A.

      Mandibular canal

    • B.

      Internal oblique ridge

    • C.

      Submandibular fossa

    • D.

      Coronoid process

    Correct Answer
    B. Internal oblique ridge
    Explanation
    The correct answer is the internal oblique ridge. The internal oblique ridge is a radiopaque area that can be seen in this image. It is a bony ridge located on the lingual aspect of the mandible, extending from the premolar region to the anterior border of the ramus. It appears as a dense line on the radiograph due to its cortical bone structure, which is more radiopaque compared to the surrounding tissues.

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  • 19. 

    Identify the radiolucent area in this image.

    • A.

      Mandibular canal

    • B.

      Internal oblique ridge

    • C.

      Submandibular fossa

    • D.

      Coronoid process

    Correct Answer
    C. Submandibular fossa
    Explanation
    The radiolucent area in the image is identified as the submandibular fossa. This is a depression located below the mandibular canal and above the internal oblique ridge. It appears radiolucent because it is a hollow space filled with soft tissue, which does not absorb X-rays as much as dense bone. The other options, such as the mandibular canal, internal oblique ridge, and coronoid process, are not the correct answers as they do not correspond to the radiolucent area in the image.

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  • 20. 

    Identify the radiopaque area in this image.

    • A.

      Mandibular canal

    • B.

      Internal oblique ridge

    • C.

      Submandibular fossa

    • D.

      Coronoid process

    Correct Answer
    D. Coronoid process
    Explanation
    The radiopaque area in the image is the coronoid process. The coronoid process is a bony projection located on the anterior aspect of the mandible, near the condyle. It appears radiopaque on the image due to its dense composition, which prevents the X-rays from passing through easily. The other options, such as the mandibular canal, internal oblique ridge, and submandibular fossa, do not match the radiopaque area seen in the image.

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  • 21. 

    Identify the radiopaque area in this image.

    • A.

      Lamina Dura

    • B.

      Alveolar Crest

    • C.

      Periodontal Ligament space

    • D.

      Alveolar bone

    Correct Answer
    A. Lamina Dura
    Explanation
    The radiopaque area in the image is the Lamina Dura. The Lamina Dura is a thin layer of compact bone that lines the socket of the tooth and appears as a dense radiopaque line on a dental radiograph. It represents the outer wall of the tooth socket and provides support and protection to the tooth.

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  • 22. 

    Identify the radiopaque area in this image.

    • A.

      Lamina Dura

    • B.

      Alveolar Crest

    • C.

      Periodontal Ligament space

    • D.

      Alveolar bone

    Correct Answer
    B. Alveolar Crest
    Explanation
    The radiopaque area in the image is the Alveolar Crest. The Alveolar Crest refers to the highest point of the bone that surrounds the tooth socket. In dental radiographs, it appears as a dense white line due to its high mineral content. This area is important in assessing the health of the periodontium and can indicate the presence of periodontal disease or bone loss.

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  • 23. 

    Identify the radiolucent area in this image.

    • A.

      Lamina Dura

    • B.

      Alveolar Crest

    • C.

      Periodontal Ligament space

    • D.

      Alveolar bone

    Correct Answer
    C. Periodontal Ligament space
    Explanation
    The radiolucent area in the image is the Periodontal Ligament space. This space appears as a dark area between the tooth root and the surrounding alveolar bone. The Periodontal Ligament space is important for anchoring the tooth in the socket and plays a role in supporting the tooth during chewing and biting.

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  • 24. 

    True or False?The  alveolar crest typically  appears 1.5 to 2.0 mm below the cementoenamel junction

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The alveolar crest typically appears 1.5 to 2.0 mm below the cementoenamel junction. This means that there is a small gap between the alveolar crest and the cementoenamel junction. The alveolar crest refers to the highest point of the bone that surrounds and supports the teeth, while the cementoenamel junction is the point where the enamel of the tooth meets the cementum. This information is important in dentistry as it helps in determining the health and stability of the supporting bone structure around the teeth.

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  • 25. 

    True or False?The periodontal ligament appears as a  thin radiopaque line around the root of a tooth

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The periodontal ligament does not appear as a thin radiopaque line around the root of a tooth. Instead, it appears as a thin radiolucent line around the root of a tooth on a dental radiograph.

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  • 26. 

    True or False?Normal alveolar crest appears pointed and sharp between the teeth within the posterior regions

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The correct answer is False. The normal alveolar crest does not appear pointed and sharp between the teeth within the posterior regions. The alveolar crest is generally flat and smooth between the teeth, providing support to the teeth and maintaining their alignment. A pointed and sharp appearance could indicate bone loss or other dental issues.

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  • 27. 

    True or False?The alveolar crest appears  less dense and radiopaque than the alveolar crest seen in the anterior region

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The alveolar crest appearing less dense and radiopaque in the posterior region compared to the anterior region is a true statement. This is because the alveolar crest in the posterior region tends to have a lower bone density and is less radiopaque on radiographs. This can be attributed to various factors such as the presence of fewer teeth, differences in occlusal forces, and variations in bone quality and quantity between the anterior and posterior regions of the jaw.

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Feb 22, 2015
    Quiz Created by
    Lynn
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