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LRA 225 Week 3 Questions and Answers | Latest Version | 2025/2026 | Correct & Verified
What structure separates the cranial cavity from the nasal cavity?✔✔Cribriform plate of the ethmoid bone
Which bones contribute to the formation of the orbit?✔✔Frontal, sphenoid, zygomatic, maxilla, palatine, ethmoid, and lacrimal bones
Which part of the sphenoid bone houses the pituitary gland?✔✔Sella turcica
What bone forms the anterior portion of the cranium?✔✔Frontal bone
What is the central, butterfly-shaped bone at the base of the skull?✔✔Sphenoid bone
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What structure is found on the frontal bone and allows blood vessels and nerves to pass to the forehead?✔✔Supraorbital foramen
What is the significance of the mastoid air cells?✔✔They help equalize air pressure and may contribute to infection spread in mastoiditis
What part of the temporal bone forms part of the zygomatic arch?✔✔Zygomatic process
What bone contains the groove for the superior sagittal sinus?✔✔Parietal bone
What is the primary function of the nasal conchae?✔✔To filter, warm, and moisten air entering the nasal passages
Which bone forms the floor of the cranial cavity and part of the orbit?✔✔Sphenoid bone
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