Question 1

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

Accepted Answer

Regulation of blood glucose levels

Question 2

A patient with a vitamin D deficiency is most likely to experience which of the following skeletal problems?

Accepted Answer

Poor calcification of bones leading to bone deformities

Question 3

Which type of bone cell is responsible for bone resorption and the release of calcium ions into the blood?

Accepted Answer

Osteoclast

Question 4

During endochondral ossification, what is the correct sequence of events?

Accepted Answer

Chondrocytes enlarge, cartilage is replaced by bone, primary ossification center forms, secondary ossification center forms

Question 5

Which of the following best describes the role of hydroxyapatite in bone tissue?

Accepted Answer

It resists compression, providing strength to the bone matrix

Question 6

A 10-year-old child falls and sustains a greenstick fracture. Which of the following best describes this type of fracture?

Accepted Answer

Only one edge of the bone breaks while the other edge bends

Question 7

Which structure is responsible for isolating and protecting bone from surrounding tissues and providing a route for blood vessels and nerves?

Accepted Answer

Periosteum

Question 8

If a patient has osteoporosis, which of the following is most likely true about their bone cell activity?

Accepted Answer

Osteoclast activity exceeds osteoblast activity

Question 9

Which of the following best explains why compact bone is stronger when stress is applied from one end to the other, but weaker when stress is applied from the side?

Accepted Answer

Osteons are arranged parallel to the long axis of the bone

Question 10

Which of the following is a correct statement about the epiphyseal plate?

Accepted Answer

It is a region of cartilage where bone growth in length occurs

Question 11

A patient with a comminuted fracture will have:

Accepted Answer

A bone that is shattered into many bony fragments

Question 12

Which of the following best describes the process of appositional growth in bone?

Accepted Answer

Osteoblasts in the periosteum add new bone matrix to the surface, increasing bone diameter

Question 13

Which of the following bone cells is most directly involved in the repair of bone after a fracture?

Accepted Answer

Osteoprogenitor cells

Question 14

A patient is diagnosed with a Pott fracture. Which bones are affected?

Accepted Answer

Tibia and fibula at the ankle

Question 15

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

Accepted Answer

It provides strength to resist stress from multiple directions and supports red marrow

Question 16

Which of the following is the correct chemical formula for hydroxyapatite, the main mineral component of bone?

Accepted Answer

$$Ca_{10}(PO_4$)_6(OH)_2$$

Question 17

A patient with a Colles fracture has broken which bone and at what location?

Accepted Answer

Distal portion of the radius

Question 18

Which of the following best describes the role of collagen fibers in bone?

Accepted Answer

They provide tensile strength, allowing bone to resist stretching and twisting

Question 19

Which of the following statements about bone remodeling is correct?

Accepted Answer

Stressed bones become thicker and stronger, while unstressed bones lose mass

Question 20

Which of the following is a correct pairing of bone type and example?

Accepted Answer

Flat bone – skull

The Skeletal System: Osseous Tissue and Skeletal Structure

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