Exam 6: Bones and Skeletal Tissues

The central (Haversian) canal that runs through the core of each osteon is the site of_________ .

List in order the four major healing stages of a simple fracture.

Which bone would likely take the longest to heal?

Bones are constantly undergoing resorption (breaking bone down) for various reasons. Which of the following cells accomplishes this process?

Cartilage has a flexible matrix that can accommodate mitosis of chondrocytes.

A 75-year-old woman and her 9-year-old granddaughter were victims of a train crash. In both cases, trauma to the chest was sustained. X-rays of the grandmother revealed several fractured ribs, but her granddaughter had none. Explain these different findings.

What are the differences between the diaphysis and the epiphyses of long bones?

The trabeculae of spongy bone are oriented toward lines of stress.

What kind of tissue is the forerunner of long bones in the embryo?

The term osteoid refers to the organic part of the matrix of compact bones without mineralization.

Each consecutive bone lamella has collagen fibers that wrap in alternating directions.

Yellow bone marrow contains a large percentage of_________ .

The hormone that is primarily involved in the control of bone remodeling is calcitonin.

Cartilage grows in two ways, appositional and interstitial. What is appositional growth?

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

Spongy bone contains __________ .

Compare how nutrients reach individual osteocytes in compact bone and in spongy bone.

Prevention of osteoporosis includes adequate intake of_________ .

Bones are classified by whether they are weight bearing or protective in function.

The periosteum is a tissue that serves only to protect the bone because it is not supplied with nerves or blood vessels.