ATI RN
Questions About the Skeletal System Questions
Question 1 of 5
The membrane that surrounds the bone is known as
Correct Answer: B
Rationale: The periosteum is a dense connective tissue membrane covering the outer surface of bones, aiding in growth, repair, and attachment. The pericardium surrounds the heart, perichondrium covers cartilage, and endosteum lines the medullary cavity—only periosteum fits the description.
Question 2 of 5
Which of the following bones listed is an example of a 'long' bone?
Correct Answer: B
Rationale: The ulna is a long bone in the forearm, characterized by a shaft (diaphysis) and ends (epiphyses), typical of long bones that support weight or enable movement. Ribs are flat, phalanges are short (despite length, they’re classified as short due to structure), and the mandible is irregular.
Question 3 of 5
The cranium consists of a ... and a ..., the latter of which is divided into three cranial fossae anterior, middle and posterior.
Correct Answer: B
Rationale: The cranium has a vault (the upper, domed portion) and a base (the lower portion), with the base divided into anterior, middle, and posterior cranial fossae supporting the brain. 'Vault/base' correctly orders these anatomical regions.
Question 4 of 5
Which bone is a paired irregular bone which articulates with the maxilla, also known as the cheekbone?
Correct Answer: C
Rationale: The zygomatic bone, a paired irregular bone, articulates with the maxilla and forms the cheekbone, contributing to the orbit’s structure. The palatine forms the palate, and the lacrimal is a small orbital bone, neither being the cheekbone.
Question 5 of 5
Which term refers to the first seven pairs of ribs that attach directly to the sternum via costal cartilage?
Correct Answer: B
Rationale: The first seven pairs of ribs are 'true ribs,' attaching directly to the sternum via costal cartilage, forming the rib cage’s core. 'Actual' and 'real' are not anatomical terms in this context.