ATI RN
Questions for Skeletal System Questions
Question 1 of 5
Blood vessels travel from one central canal to another central canal through a:
Correct Answer: C
Rationale: Perforating canals (Volkmann’s canals) connect central canals (Haversian canals) in osteons, allowing blood vessels to travel between them. Canaliculi connect osteocytes, the medullary canal is the marrow cavity, and trabeculae are in spongy bone, making 'perforating canal' correct.
Question 2 of 5
Identify the four paranasal sinuses associated with the skull.
Correct Answer: D
Rationale: The paranasal sinuses are frontal (forehead), maxillary (cheek), sphenoidal (behind eyes), and ethmoidal (between eyes), all skull-related. Temporal and mastoid are not sinuses, mandibular is the jaw, making 'frontal, maxillary, sphenoidal and ethmoidal' correct.
Question 3 of 5
The hard palate is formed by the and bones.
Correct Answer: B
Rationale: The hard palate, the mouth’s roof, is formed by the maxillae (anterior) and palatine bones (posterior). The mandible is the lower jaw, zygomatic the cheek, and vomer the nasal septum, making 'maxillae: palatine' correct.
Question 4 of 5
What is the name of the U-shaped bone located superior to the larynx?
Correct Answer: A
Rationale: The hyoid, a U-shaped bone in the neck above the larynx, supports the tongue and lacks articulation with other bones. The thyroid is cartilage, zygomatic arch is facial, and clavicle is pectoral, making 'hyoid' correct.
Question 5 of 5
There are vertebrosternal ribs, vertebrochondral ribs and vertebral ribs.
Correct Answer: C
Rationale: Ribs are classified: 7 vertebrosternal (true, attach directly to sternum via cartilage), 3 vertebrochondral (false, attach via shared cartilage), and 2 vertebral (floating, no sternal attachment). '7-3-2' is correct.