Question 1

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

Accepted Answer

Regulation of body temperature

Question 2

Which type of bone cell is primarily responsible for bone resorption?

Accepted Answer

Osteoclast

Question 3

A patient presents with a fracture that does not break the skin. What type of fracture is this?

Accepted Answer

Closed fracture

Question 4

Which hormone increases blood calcium levels by stimulating osteoclast activity?

Accepted Answer

Parathyroid hormone (PTH)

Question 5

Which structure is the site of blood cell formation in bones?

Accepted Answer

Red marrow

Question 6

During bone growth, which process involves the replacement of cartilage by bone?

Accepted Answer

Endochondral ossification

Question 7

Which of the following bones is part of the axial skeleton?

Accepted Answer

Rib cage

Question 8

A long bone consists of all the following EXCEPT:

Accepted Answer

Fontanelle

Question 9

Which type of cartilage is most commonly associated with bone formation?

Accepted Answer

Hyaline cartilage

Question 10

Which of the following best describes the function of osteocytes?

Accepted Answer

Maintain bone tissue and communicate with other bone cells

Question 11

A 12-year-old child is experiencing rapid bone growth. Which structure is primarily responsible for this growth?

Accepted Answer

Epiphyseal plate

Question 12

Which of the following equations correctly represents the relationship between calcium homeostasis and bone storage?

Accepted Answer

$$Ca^{2+}$$_{bone} \rightarrow $$Ca^{2+}$$_{blood}$$ (when PTH is high)

Question 13

Which bone cell type is derived from mesenchymal stem cells?

Accepted Answer

Osteoblast

Question 14

A patient with osteoporosis is likely to have increased activity of which bone cell?

Accepted Answer

Osteoclasts

Question 15

Which of the following is a correct sequence of events in bone repair after a fracture?

Accepted Answer

Hematoma formation → Callus formation → Ossification → Bone remodeling

Question 16

Which of the following best describes the role of vitamin C in bone health?

Accepted Answer

Necessary for collagen synthesis by osteoblasts

Question 17

Which of the following bones forms the anterior portion of the cranium and is visible from the superior view of the skull?

Accepted Answer

Frontal bone

Question 18

Which of the following is a correct description of lamellae in compact bone?

Accepted Answer

Circular layers of bone matrix that surround the central canal

Question 19

A patient has a fracture with bone fragments driven into the spongy portion of the other fragment. What type of fracture is this?

Accepted Answer

Impacted fracture

Question 20

Which of the following factors would most likely decrease bone growth in a child?

Accepted Answer

Osteomalacia

Skeletal System: Structure, Function, and Bone Biology

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