Question 1

Which of the following is NOT a function of the skeletal system?

Accepted Answer

Production of digestive enzymes

Question 2

A patient suffers a fracture in the diaphysis of the femur. Which part of the bone is affected?

Accepted Answer

The shaft of the bone

Question 3

Which type of bone cell is responsible for dissolving bone matrix to release calcium?

Accepted Answer

Osteoclasts

Question 4

During endochondral ossification, what is the primary tissue that is replaced by bone?

Accepted Answer

Hyaline cartilage

Question 5

Which bone marking is defined as a deep cleft or slit in a bone?

Accepted Answer

Fissure

Question 6

A long bone increases in length primarily through which process?

Accepted Answer

Interstitial growth at the epiphyseal plate

Question 7

Which of the following best describes the structure of compact bone?

Accepted Answer

Basic unit is the osteon, with concentric lamellae and a central canal

Question 8

Which equation best represents the mineralization process promoted by osteoblasts?

Accepted Answer

$Ca^{2+} + PO_4^{3-} + OH^- \rightarrow Ca_{10}(PO_4)_6(OH)_2$

Question 9

Which of the following bone shapes is correctly matched with its description?

Accepted Answer

Flat bones: thin, roughly parallel surfaces

Question 10

A patient with osteoporosis has increased activity of which bone cell, leading to bone loss?

Accepted Answer

Osteoclasts

Question 11

Which layer of bone is responsible for isolating and protecting the bone from surrounding tissue and providing a route for circulatory and nervous supply?

Accepted Answer

Periosteum

Question 12

Which of the following is a projection for tendon and ligament attachment found only on the femur?

Accepted Answer

Trochanter

Question 13

Which process describes bone formation from fibrous tissue, such as in the development of the skull?

Accepted Answer

Intramembranous ossification

Question 14

Which bone marking is a small, flat articular surface that participates in a joint?

Accepted Answer

Facet

Question 15

Which of the following best explains why spongy bone is found at the epiphyses of long bones?

Accepted Answer

It creates a lightweight nature and absorbs shock at joints

Question 16

Which of the following is TRUE regarding the medullary cavity?

Accepted Answer

It contains bone marrow

Question 17

A child’s long bones are still growing. Which structure is responsible for this continued growth?

Accepted Answer

Epiphyseal plate

Question 18

Which of the following is a correct sequence of events in intramembranous ossification?

Accepted Answer

Mesenchymal cells differentiate into osteoblasts, which secrete matrix and become osteocytes

Question 19

Which of the following bone markings is a shallow depression?

Accepted Answer

Fossa

Question 20

If a bone marking is described as a narrow connection between the epiphysis and diaphysis, what is it called?

Accepted Answer

Neck

The Skeletal System: Osseous Tissue and Bone Structure

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