Question 1

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

Accepted Answer

Regulates body temperature

Question 2

A patient presents with a fracture in the diaphysis of the femur. Which type of bone tissue is most abundant in this region?

Accepted Answer

Cortical bone

Question 3

Which cell type is responsible for bone resorption during the bone remodeling cycle?

Accepted Answer

Osteoclast

Question 4

During endochondral ossification, which structure is replaced by bone tissue?

Accepted Answer

Cartilage model

Question 5

Which equation best represents the relationship between bone strength ($S$), cross-sectional area ($A$), and applied force ($F$)?

Accepted Answer

$S = \frac{F}{A}$

Question 6

A deficiency in which mineral would most directly impair the ability of bone to store chemical energy?

Accepted Answer

Lipids

Question 7

Which structure contains osteogenic cells that contribute to bone growth and repair?

Accepted Answer

Periosteum

Question 8

A patient with osteoporosis is at increased risk for fractures due to decreased bone mass. Which process is most likely increased in this condition?

Accepted Answer

Osteoclast activity

Question 9

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

Accepted Answer

They maintain bone matrix and communicate mechanical stress.

Question 10

If a bone is subjected to repeated bending forces, which region is most likely to develop microfractures first?

Accepted Answer

Trabecular bone of the epiphysis

Question 11

Which of the following best explains why bones are able to withstand compressive forces?

Accepted Answer

Arrangement of collagen fibers and mineral crystals

Question 12

Which process is responsible for the lengthwise growth of long bones during childhood?

Accepted Answer

Endochondral ossification at the epiphyseal plate

Question 13

A patient has a mutation affecting osteoprogenitor cells. Which outcome is most likely?

Accepted Answer

Reduced bone formation

Question 14

Which of the following is a correct sequence for bone remodeling?

Accepted Answer

Osteoclast resorption → Osteoblast formation → Osteocyte maintenance

Question 15

Which equation best represents the calculation of bone mineral density ($BMD$) given bone mass ($M$) and bone volume ($V$)?

Accepted Answer

$BMD = \frac{M}{V}$

Question 16

Which structure is most directly involved in the attachment of tendons to bone?

Accepted Answer

Periosteum

Question 17

A child with vitamin D deficiency is likely to develop which bone disorder due to impaired mineralization?

Accepted Answer

Rickets

Question 18

Which of the following best describes the composition of bone matrix?

Accepted Answer

Collagen fibers and hydroxyapatite crystals

Question 19

Which cell type is most active during the repair phase following a bone fracture?

Accepted Answer

Osteoblast

Question 20

A patient experiences a decrease in bone mass due to prolonged immobilization. Which mechanical principle explains this phenomenon?

Accepted Answer

Wolff's Law

Bones and Bone Structure: Study Notes for Anatomy & Physiology

Study Guide - Practice Questions