Q: Which equation best represents the effect of parathyroid hormone (PTH) on blood calcium concentration?

$$[Ca$$^{2+}$$]_{blood} \uparrow \text{ when } PTH \uparrow$$

Question 1

Which of the following best describes the primary function of the skeletal system?

Accepted Answer

Support, protection, movement, mineral storage, and blood cell production

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

Compact bone

Question 3

Which hormone increases blood calcium levels by stimulating osteoclast activity?

Accepted Answer

Parathyroid hormone (PTH)

Question 4

During endochondral ossification, which structure forms first at the center of the cartilage model?

Accepted Answer

Primary ossification center

Question 5

A child with insufficient growth hormone (GH) secretion is likely to develop which condition?

Accepted Answer

Dwarfism

Question 6

Which equation correctly represents the relationship between bone mass and mechanical stress, according to Wolff's Law?

Accepted Answer

$$M_{bone} \propto S_{mechanical}$$

Question 7

Which of the following best describes the process of bone remodeling?

Accepted Answer

Bone is continuously resorbed and deposited by osteoclasts and osteoblasts

Question 8

A patient with scurvy is likely to have impaired bone formation due to a deficiency in which vitamin?

Accepted Answer

Vitamin C

Question 9

Which of the following is a correct description of a synovial joint?

Accepted Answer

A joint characterized by a fluid-filled cavity, articular cartilage, and accessory ligaments

Question 10

A patient presents with pain and swelling in the shoulder after a fall. Imaging reveals a separation of the acromion from the clavicle. Which type of injury is most likely?

Accepted Answer

Sprain

Question 11

Which structure is responsible for the longitudinal growth of long bones during childhood and adolescence?

Accepted Answer

Epiphyseal plate

Question 12

Which of the following best explains the difference between rheumatoid arthritis and osteoarthritis?

Accepted Answer

Rheumatoid arthritis is an autoimmune disorder causing inflammation of synovial membranes, while osteoarthritis is a degenerative joint disease due to wear and tear

Question 13

Which of the following terms refers to the process of blood cell formation in bone marrow?

Accepted Answer

Hematopoiesis

Question 14

A patient with osteoporosis is at increased risk for which type of fracture?

Accepted Answer

Pathologic fracture

Question 15

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

Accepted Answer

They connect osteocytes and allow for nutrient and waste exchange

Question 16

Which equation best represents the effect of parathyroid hormone (PTH) on blood calcium concentration?

Accepted Answer

$$[Ca$$^{2+}$$]_{blood} \uparrow 	ext{ when } PTH \uparrow$$

Question 17

Which of the following is a function of the periosteum?

Accepted Answer

It serves as an attachment site for tendons and ligaments and contains osteogenic cells

Question 18

A 65-year-old patient presents with decreased bone density and frequent fractures. Which term best describes this condition?

Accepted Answer

Osteopenia

Question 19

Which of the following structures is found between the bodies of adjacent vertebrae and acts as a shock absorber?

Accepted Answer

Nucleus pulposus

Question 20

A patient with a traumatic fracture of the femur undergoes bone repair. Which sequence correctly describes the stages of bone healing?

Accepted Answer

Hematoma formation → fibrocartilaginous callus formation → bony callus formation → bone remodeling

Bones, Bone Structure, and Joints: Study Guide for Anatomy & Physiology

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