Beginner Ethmoid Bone Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. Where is the ethmoid bone located?
- Within the mandible
- At the posterior end of the vertebral canal
- Behind the occipital condyles
- Between the orbits at the roof of the nasal cavity
Q2. Which horizontal part of the ethmoid forms part of the anterior cranial fossa?
- Uncinate process
- Perpendicular plate
- Middle nasal concha
- Cribriform plate
Q3. What passes through the small foramina of the cribriform plate?
- Olfactory nerve fibers
- Mandibular nerve fibers
- Hypoglossal nerve fibers
- Facial nerve fibers
Q4. Which ethmoid projection rises superiorly into the anterior cranial fossa?
- Pterygoid hamulus
- Inferior nasal concha
- Crista galli
- Styloid process
Q5. What attaches to the crista galli?
- Falx cerebri
- Stylohyoid ligament
- Tentorium cerebelli only
- Temporalis muscle
Q6. Which part of the ethmoid contributes to the bony nasal septum?
- Orbital plate
- Perpendicular plate
- Ethmoidal bulla
- Superior nasal concha
Q7. Which two nasal conchae are parts of the ethmoid bone?
- Middle and inferior nasal conchae
- Superior and middle nasal conchae
- Superior and inferior nasal conchae
- Inferior nasal concha only
Q8. What are the paired lateral masses of the ethmoid called?
- Occipital condyles
- Mastoid processes
- Ethmoidal labyrinths
- Pterygoid plates
Q9. What do the ethmoidal labyrinths contain?
- Ethmoidal air cells
- Mastoid air cells
- Frontal horns of the lateral ventricles
- Auditory ossicles
Q10. Which thin ethmoid plate forms much of the medial wall of the orbit?
- Perpendicular plate
- Cribriform plate
- Orbital plate or lamina papyracea
- Crista galli