Question 1

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

Accepted Answer

Production of hormones

Question 2

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

Accepted Answer

Osteoclasts

Question 3

A patient presents with a fracture in the diaphysis of the femur. Which structural component of a long bone is primarily affected?

Accepted Answer

The shaft (diaphysis)

Question 4

Which equation best represents the process of bone mineralization?

Accepted Answer

$$Ca^{2+}$$ + $$PO_4$$^{3-} \rightarrow $$Ca_3$$($$PO_4)_2$

Question 5

Which of the following best describes the difference between primary and secondary bone tissue?

Accepted Answer

Primary bone is woven and less organized, while secondary bone is lamellar and highly organized.

Question 6

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

Accepted Answer

Hyaline cartilage model

Question 7

Which hormone increases blood calcium levels by stimulating osteoclast activity?

Accepted Answer

Parathyroid hormone (PTH)

Question 8

A child is diagnosed with rickets, a disease characterized by soft and weak bones. Which vitamin deficiency is most likely responsible?

Accepted Answer

Vitamin D

Question 9

Which of the following best describes the anatomical classification of a synovial joint?

Accepted Answer

A joint with a fluid-filled cavity, articular cartilage, and a joint capsule

Question 10

Which structure is NOT part of the axial skeleton?

Accepted Answer

Scapula

Question 11

A patient has limited movement in the knee due to damage in the synovial membrane. Which function is most likely impaired?

Accepted Answer

Production of synovial fluid for lubrication

Question 12

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

Accepted Answer

Femur

Question 13

Which equation represents the relationship between bone mass and age, assuming bone mass decreases linearly after age 30?

Accepted Answer

$$B = B_0$ - k(t - 30)$$, where $$B is $$bone mass, $$B_0 is $$bone mass at age 30, $$k is $$rate of loss, and $$t is $$age in years.

Question 14

Which of the following best explains why the epiphyseal plate is important during childhood?

Accepted Answer

It is the site of longitudinal bone growth.

Question 15

Which type of cartilage is found at the ends of long bones in synovial joints?

Accepted Answer

Articular (hyaline) cartilage

Question 16

A patient with osteoporosis is at increased risk for fractures because:

Accepted Answer

Bone density is decreased, making bones more fragile.

Question 17

Which of the following is a structural feature unique to compact bone?

Accepted Answer

Presence of osteons (Haversian systems)

Question 18

Which process is responsible for the repair of a bone fracture?

Accepted Answer

Endochondral ossification followed by bone remodeling

Question 19

Which of the following best describes the movement allowed by a hinge joint, such as the knee?

Accepted Answer

Flexion and extension in one plane

Question 20

Which bone is NOT part of the vertebral column?

Accepted Answer

Clavicle

Skeletal System: Structure, Function, and Development

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