________ accounts for almost two-thirds of the weight of bone.
The ________ interactions allow bones to be strong, somewhat flexible, and highly resistant to shattering.
The most abundant cell types found in the bone are
_______ cells are located in the inner cellular layer of the periosteum.
In relationship to the diaphysis of a long bone, the osteons are
10 to 15
The femur can withstand _______ times the body weight without breaking.
_________ marrow is found between the trabeculae of spongy bone.
_________ bone reduces the weight of the skeleton and makes it easier for muscles to move the bones.
Intramembranous ossification begins with the ________ cells.
step 4, growth and marrow cavity creation
In which step of endochondral ossification does remodeling of the bone occur?
What is the primary source of calcitriol in the body?
The most abundant mineral in the body is
Bone is composed of ________ percent calcium.
While on a school skiing trip in Colorado, Heidi falls and breaks her femur. What would you expect to see as part of her nursing assessment several hours after the fall?
The lacunae of bone contain
the bones would be more flexible
How would increasing the proportion of organic molecules to inorganic components in the bony matrix affect the physical characteristics of bone?
are lined up in the same direction
In compact bone, the osteons
are organized along stress lines
The trabeculae of spongy bone
If the rate of ostelysis exceeds osteogenesis, bones will
bones grow wider
During appositional growth
When cartilage is produced at the epiphyseal side of the metaphysis at the same rate as bone is deposited on the opposite side, bones
elevated levels of sex hormones
Premature closure of the epiphyseal plates could be caused by
a portion of the protein and mineral content is replaced each year
In normal adult bones,
osteoclast activity when calcitonin is absent
Which is greater? (Osteoclast activity)
blood calcium levels when parathyroid hormone is increased
Which is greater? (Blood calcium levels)
causes a gradual reduction in bone mass
The condition known as osteopenia
Degenerative changes in a joint can be the result of all of the following, except
decreased muscle response
Bill develops a benign tumor of the parathyroid glands, which causes the level of parathyroid hormone in his blood to be higher than normal. Which of the following would you expect to occur as a result of this condition?
Marry is 50 years old. During a checkup, a bone scan reveals that portions of her skeleton show greater than normal demineralization. After reviewing the test results, her physician suggests hormone therapy. What hormone will she prescribe for her patient?
long bones have reached their adult length
When the epiphyseal plate is replaced by bone
Hypersecretion of parathyroid hormone would produce changes in the bone similar to those associated with