Question 1

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

Accepted Answer

Hormone production

Question 2

A patient presents with a fracture in the femur. Which classification does the femur belong to based on its shape?

Accepted Answer

Long bone

Question 3

Which tissue is responsible for hematopoiesis in the skeletal system?

Accepted Answer

Bone marrow

Question 4

During endochondral ossification, which type of cartilage is replaced by bone?

Accepted Answer

Hyaline cartilage

Question 5

Which bone cell is primarily responsible for bone resorption?

Accepted Answer

Osteoclast

Question 6

The periosteum is best described as:

Accepted Answer

A dense irregular connective tissue covering the external surface of bones except at joints

Question 7

Which of the following equations best represents the chemical composition of hydroxyapatite, the main inorganic component of bone?

Accepted Answer

$$Ca_5$$($$PO_4)_3OH$

Question 8

A child with bowed legs and delayed growth is diagnosed with rickets. Which deficiency is most likely responsible?

Accepted Answer

Vitamin D deficiency

Question 9

Which process increases the width of bones during growth?

Accepted Answer

Appositional bone growth

Question 10

According to Wolff's law, which of the following would most likely occur in the dominant arm of a tennis player?

Accepted Answer

Thicker and stronger bones due to increased mechanical stress

Question 11

Which hormone increases blood calcium levels by stimulating bone resorption?

Accepted Answer

Parathyroid hormone (PTH)

Question 12

Which of the following best describes the structure of a flat bone?

Accepted Answer

Thin plates of compact bone with spongy bone (diploe) sandwiched between

Question 13

Which bone cell type is responsible for synthesizing new bone matrix during growth?

Accepted Answer

Osteoblast

Question 14

During childhood, which structure allows for the longitudinal growth of long bones?

Accepted Answer

Epiphyseal plate

Question 15

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

Accepted Answer

Formation of bone collar, calcification of cartilage, invasion by periosteal bud, formation of medullary cavity, appearance of secondary ossification centers

Question 16

Which of the following best explains why bones are both hard and flexible?

Accepted Answer

Combination of organic (collagen fibers and osteoid) and inorganic (hydroxyapatite) components

Question 17

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

Accepted Answer

Bone resorption exceeds bone deposition, leading to decreased bone mass

Question 18

Which of the following is TRUE regarding bone remodeling in healthy adults?

Accepted Answer

Bone mass remains the same due to balanced deposition and resorption

Question 19

Which of the following structures is found in the axial skeleton?

Accepted Answer

Vertebrae

Question 20

Which hormone is responsible for stimulating the growth spurt at puberty and later inducing epiphyseal plate closure?

Accepted Answer

Sex hormones (estrogen and testosterone)

Skeletal System: Structure, Function, and Bone Formation

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