The region of a long bone between the end and the shaft is known as the ________.
Through the action of osteoclasts,
bony matrix is dissolved
The ________ interactions allow bone to be strong, somewhat flexible, and highly resistant to shattering.
The narrow passageways that contain cytoplasmic extensions of osteocytes are called
The central canal of an osteon contains
What is a characteristic of bone?
The bone matrix is very dense and contains deposits of calcium salts
________ bone reduces the weight of the skeleton and reduces the load on muscles.
The deposition of calcium salts in bone tissues is referred to as
Intramembranous ossification begins with differentiation of ________ cells.
Bone tissue formation begins when osteoblasts secrete
In normal adult bones, a portion of the _____ and _____ content is replaced each year.
When stress is applied to a bone, the minerals in the bone produce
a weak electrical field that attracts osteoblasts
Where in the body does the production of precursors for the synthesis of calcitriol occur?
Elevated levels of calcium ion in the blood stimulate the secretion of the hormone
Parathyroid hormone inhibits
inhibits calcitonin secretion
Bone plays a central role in the regulation of blood levels of
Hundreds of years ago explorers often died of scurvy. How can this bone-related disease be prevented?
Supplement the diet with fresh fruit rich in vitamin C
The disease osteomalacia causes calcium loss from the skeleton, which would result in bones that are
weaker and more flexible
While on a school skiing trip in Colorado, Heidi falls and breaks her tibia and fibula in a Pott fracture. What would you expect as a prominent part of her clinical assessment several hours after the fall?
A condition in which bone becomes riddled with holes is called
If osteoclasts are more active than osteoblasts, bones will become