Craniofacial Anatomy & Landmarks Flashcards
7 cards from real CCA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Craniofacial Anatomy & Landmarks flashcards as text
The infraorbital foramen, an important landmark in midfacial prosthetics, is located approximately:
Answer: 10 mm below the inferior orbital rim, roughly in line with the pupil
The infraorbital foramen lies about 10 mm inferior to the midpoint of the inferior orbital rim, transmitting the infraorbital nerve and vessels.
Which landmark defines the most superior point of the external acoustic meatus and is used to establish the Frankfort horizontal plane?
Answer: Porion
The porion is the most superior point of the external acoustic meatus (ear canal opening) and is one of two landmarks defining the Frankfort horizontal plane.
The menton craniometric landmark is relevant to mandibular and chin prosthetic planning. It is defined as:
Answer: The most inferiorly positioned midline point of the mandibular symphysis
The menton is the most inferior point of the mandibular symphysis in the midsagittal plane, representing the lowest point of the chin.
In designing a nasal prosthesis, the anaplastologist must account for the alar base width. The alar bases are the:
Answer: Lateral-most attachment points where the nasal alae meet the facial skin
The alar bases are the lateral points where the nasal wings (alae) attach to the upper lip and facial skin, defining the overall nasal width.
When the anaplastologist describes the helix of the auricle, they are referring to:
Answer: The curved outer cartilaginous rim of the auricle from the helix root to the tail
The helix is the prominent curved outer rim of the auricle, beginning at the helix root (where it attaches to the head) and ending at the helix tail near the earlobe.
The zygion is a craniometric landmark used in assessing facial width for prosthetic planning. It is located at:
Answer: The most lateral point of the zygomatic arch on each side
The zygion is the most laterally projecting point on the zygomatic arch, used as a bilateral landmark to measure bizygomatic (facial) width.
Which structure forms the floor of the orbit and is susceptible to blowout fractures that may alter orbital prosthetic fitting?
Answer: Orbital plate of the maxilla (with contributions from zygomatic and palatine bones)
The floor of the orbit is formed primarily by the orbital surface of the maxilla, with contributions from the orbital surface of the zygomatic bone and the orbital process of the palatine bone.