Section 4 Flashcards
What is the site of hematopoiesis in an adult bone?
Red marrow
What is the nonliving structural part of a bone?
Matrix
What is the function of the Haversian canal?
It is the canal through which blood vessels and nerves serve each osteon.
The appendicular skeleton contains:
The bones of the limbs, hips and shoulders.
Describe Wolff’s law.
Bones form according to the stresses placed on them.
Describe rickets.
A lack of calcium in the diet of children resulting in weakened bones.
What characteristic of fibrocartilage gives it the strength and compressibility required in areas like the intervertebral discs?
A presence of collagen fibers
What part of the skeleton is most at risk for fracture in elderly people with osteoporosis?
Vertebra and neck of the femur
Which of the following describes the fetal skeleton?
The fetal skeleton begins as cartilage but becomes ossified gradually throughout fetal development.
Which of the following describes the function of osteoblasts?
They deposit matrix
Which factor is the most important stimulus for long bone growth in childhood?
The growth hormone production
During bone repair, what cells are responsible for producing collagen fibers that span the area between bone pieces?
Fibroblasts
Which of the following terms is associated work surgical realignment of broken bones?
Open reduction
What is the function of the periosteum?
It is the double layer membrane; covering the shaft of long bones that serves as attachment point for tendons
What is trabeculae?
The irregularly arranged lamella in spongy bone
