Advanced Nasal Septum Quiz

Q1. Why is Kiesselbach area particularly prone to epistaxis?

• The internal carotid artery lies exposed on the septal surface
• Several arterial territories form a superficial anastomotic network there
• The area contains no supporting connective tissue
• It is the normal opening of the sphenoidal sinus

Q2. Why can a septal hematoma threaten the viability of septal cartilage?

• It prevents olfactory neurons from entering the optic nerve
• It separates avascular cartilage from its nutritionally important mucoperichondrium
• It causes the vomer to lose its periosteal blood supply only
• It directly blocks the central retinal artery

Q3. What structural deformity can follow untreated septal cartilage necrosis after a septal hematoma?

• Micrognathia
• Bifid tongue
• Saddle nose deformity
• Exophthalmos

Q4. Why must septal surgery preserve adequate supporting cartilage?

• Septal cartilage forms the orbital floor
• Septal cartilage anchors the mandible
• Septal cartilage forms the hard palate entirely
• Septal cartilage contributes to support of the external nose

Q5. Which developmental process contributes to formation of the nasal septum?

• Evagination of foregut endoderm
• Fusion of the mandibular processes only
• Midline nasal development involving largely neural crest-derived mesenchyme
• Segmentation of paraxial mesoderm into vertebrae

Q6. Why can a septal deviation influence paranasal sinus ventilation indirectly?

• It can alter airflow and narrow access near sinus drainage pathways
• It directly seals every sinus ostium
• It eliminates mucociliary transport from all sinuses
• It closes the auditory tube within the middle ear

Q7. Which autonomic fibers promote glandular secretion in the nasal septal mucosa?

• Parasympathetic fibers relayed through the pterygopalatine ganglion
• Preganglionic sympathetic fibers synapsing in the ciliary ganglion
• Somatic motor fibers from the hypoglossal nerve
• Motor fibers from the accessory nerve

Q8. What is the principal source of postganglionic sympathetic fibers to nasal blood vessels?

• Submandibular ganglion
• Otic ganglion
• Superior cervical ganglion
• Ciliary ganglion

Q9. Why can trauma to the superior nasal septum potentially affect olfaction?

• The superior septum contains the optic chiasm
• Taste buds are concentrated throughout the septum
• The superior septum contains olfactory epithelium and nearby olfactory axons
• The facial nerve runs within septal cartilage

Q10. Which statement best integrates nasal septal anatomy?

• It is a vascular, innervated osteocartilaginous partition that separates and supports the nasal passages
• It is a sensory ganglion located beneath the cribriform plate
• It is an avascular membrane formed only by the vomer
• It is a purely muscular wall that closes the choanae