CCA Craniofacial Anatomy & Landmarks 2 — Questions and Answers
Question 1: Which cranial suture separates the two parietal bones at the midline?
- Coronal suture
- Sagittal suture (Correct answer)
- Lambdoid suture
- Squamous suture
Correct answer: Sagittal suture
The sagittal suture runs anteroposteriorly along the midline, separating the two parietal bones.
Question 2: The nasion is defined as the junction of which anatomical structures?
- Nasal bones and frontal bone (Correct answer)
- Nasal septum and ethmoid
- Nasal bones and maxilla
- Glabella and nasal dorsum
Correct answer: Nasal bones and frontal bone
The nasion is the craniometric point at the intersection of the internasal suture and the frontonasal suture.
Question 3: An anaplastologist designing an auricular prosthesis should identify the anatomical landmark known as the tragus. What is its location?
- The curved outer rim of the auricle
- The small cartilaginous projection anterior to the ear canal (Correct answer)
- The depression posterior to the antihelix
- The lobule at the inferior margin of the auricle
Correct answer: The small cartilaginous projection anterior to the ear canal
The tragus is the small, cartilaginous projection that partially covers the external acoustic meatus anteriorly.
Question 4: Which bone forms the primary structure of the zygomatic arch?
- Maxilla and sphenoid
- Zygomatic bone and temporal bone (Correct answer)
- Zygomatic bone and frontal bone
- Temporal bone and parietal bone
Correct answer: Zygomatic bone and temporal bone
The zygomatic arch is formed by the zygomatic process of the temporal bone joining the temporal process of the zygomatic bone.
Question 5: The philtrum is a surface landmark relevant to lip and nasal prosthetics. It is best described as:
- The vermilion border of the upper lip
- The columella between the nostrils
- The vertical groove between the nose and the cupid's bow of the upper lip (Correct answer)
- The horizontal crease at the base of the nose
Correct answer: The vertical groove between the nose and the cupid's bow of the upper lip
The philtrum is the midline vertical groove on the external surface of the upper lip, bounded superiorly by the base of the columella.
Question 6: When fabricating an orbital prosthesis, the anaplastologist must consider the medial canthus. This landmark refers to:
- The lateral corner of the eyelid opening
- The medial corner of the eyelid opening near the nose (Correct answer)
- The lower eyelid margin
- The superior orbital rim
Correct answer: The medial corner of the eyelid opening near the nose
The medial canthus is the inner corner of the palpebral fissure, located closest to the nose.
Question 7: Which foramen transmits the supraorbital nerve and vessels, and is a palpable landmark used in facial prosthetics?
- Infraorbital foramen
- Mental foramen
- Supraorbital foramen (notch) (Correct answer)
- Zygomaticofacial foramen
Correct answer: Supraorbital foramen (notch)
The supraorbital foramen (or notch) is located along the superior orbital rim and transmits the supraorbital nerve and artery.
CCA Craniofacial Anatomy & Landmarks 2
Which cranial suture separates the two parietal bones at the midline?