Question 1

Which of the following best describes the function of the epiphyseal plate in a growing long bone?

Accepted Answer

It is a region of hyaline cartilage responsible for lengthwise bone growth.

Question 2

A 12-year-old child fractures her femur. The doctor explains that the bone will heal through a process involving a hematoma, fibrocartilage callus, bony callus, and remodeling. Which of the following correctly orders the sequence of events in bone repair?

Accepted Answer

Hematoma forms, fibrocartilage callus forms, bony callus forms, bone remodeling occurs.

Question 3

Which hormone is released when blood calcium levels are low, and what is its effect on bone tissue?

Accepted Answer

Parathyroid hormone (PTH); stimulates osteoclasts to break down bone and release calcium.

Question 4

A patient with osteoporosis is at increased risk for which of the following complications, and why?

Accepted Answer

Bone fractures, because bone density decreases and bones become fragile.

Question 5

Which of the following bone types is correctly matched with its example?

Accepted Answer

Flat bone – sternum

Question 6

A forensic anthropologist finds a bone with a narrow ridge, a sharp, slender projection, and a rounded articular surface. Which bone markings are these, respectively?

Accepted Answer

Crest, spine, condyle

Question 7

Which of the following statements about the microscopic anatomy of compact bone is correct?

Accepted Answer

Osteocytes are found in concentric circles called lamellae, which surround the central (Haversian) canal.

Question 8

During bone remodeling, which two factors primarily determine where bone matrix is added or removed?

Accepted Answer

Pull of gravity and muscles on the skeleton

Question 9

A 25-year-old athlete suffers a compound fracture of the tibia. Which of the following best describes this injury?

Accepted Answer

The bone is broken and penetrates through the skin.

Question 10

Which of the following best explains why the hyoid bone is unique among bones of the human body?

Accepted Answer

It is the only bone that does not articulate with another bone.

Question 11

A newborn's skull contains fontanels. What is the primary function of these structures?

Accepted Answer

To allow for compression of the skull during birth and brain growth after birth.

Question 12

Which of the following joints is classified as a synovial joint and allows for the greatest range of motion?

Accepted Answer

Ball-and-socket joint

Question 13

A patient presents with pain and swelling in the knee. The doctor suspects inflammation of a structure that is a flattened fibrous sac lined with synovial membrane and filled with synovial fluid. What is this structure called?

Accepted Answer

Bursa

Question 14

Which of the following best describes the difference between primary and secondary spinal curvatures?

Accepted Answer

Primary curvatures are present at birth (thoracic and sacral); secondary curvatures develop after birth (cervical and lumbar).

Question 15

A woman in her 70s is diagnosed with kyphosis due to vertebral collapse. Which underlying condition most likely contributed to this spinal deformity?

Accepted Answer

Osteoporosis

Question 16

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

Accepted Answer

Femur

Question 17

A patient has a fracture at the distal end of the radius. Which joint is most likely affected by this injury?

Accepted Answer

Wrist joint

Question 18

Which of the following best explains why the female pelvis is adapted for childbirth?

Accepted Answer

The ischial spines are shorter and farther apart, and the pubic arch is more rounded.

Question 19

Which of the following equations correctly represents the relationship between bone mass, bone formation, and bone resorption during adulthood?

Accepted Answer

$$Bone\ mass = Bone\ formation - Bone\ resorption$$

Question 20

A 10-year-old child is growing rapidly. Which hormones are primarily responsible for regulating bone growth during this period?

Accepted Answer

Growth hormone and sex hormones

Skeletal System: Structure, Function, and Development

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