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Choose which bone marking type would likely increase in size when a
weight lifter repeatedly exercises muscles that attach to it.
-trochanter
-meatus
-foramen
-fossa - Correct Answer --trochanter
A fracture in the shaft of a bone would be a break in the ________.
-diaphysis
-epiphysis
-articular cartilage
-metaphysis - Correct Answer --diaphysis
An imbalance that activates these bone cells would lead to a loss of bone
density.
-osteocytes
-chondroblasts
,-osteoblasts
-osteoclasts - Correct Answer --osteoclasts
Osteoid-producing osteoblasts must rely upon this organelle to produce
primary structures leading to the formation of collagen and calcium-binding
proteins.
-mitochondria
-centrioles
-ribosomes
-peroxisomes - Correct Answer --ribosomes
What is the weakest part of a developing, adolescent long bone?
-the epiphyseal plate
-the medullary cavity
-the epiphyses
-the diaphysis - Correct Answer --the epiphyseal plate
During infancy and childhood, the most important stimulus of epiphyseal
plate activity is __________.
-thyroid hormones
-growth hormone
,-testosterone
-estrogen - Correct Answer --growth hormone
Which event has to precede all others during endochondral ossification?
-A nutrient artery invades the diaphysis.
-An epiphyseal plate is trapped between the diaphysis and either
epiphysis.
-A cartilage model is formed.
-Bone trabeculae appear in the epiphyses. - Correct Answer --A cartilage
model is formed.
Match the words in the left column to the appropriate blanks in the
sentences on the right. Make certain each sentence is complete before
submitting your answer.
1. Chondrocytes: The cells responsible for the early stages of
endochondral ossification.
2. Appositional growth: The growth pattern of bone in which matrix is laid
down on the surface.
3. Intramembranous ossification: Bone develops from a fibrous membrane.
4. Epiphyseal line: The appearance of this structure signals the end of bone
growth.
, 5. Epiphyseal plate: Area where bone longitudinal growth takes place.
- Correct Answer --1. Chondrocytes: The cells responsible for the early
stages of endochondral ossification.
2. Appositional growth: The growth pattern of bone in which matrix is laid
down on the surface.
3. Intramembranous ossification: Bone develops from a fibrous membrane.
4. Epiphyseal line: The appearance of this structure signals the end of bone
growth.
5. Epiphyseal plate: Area where bone longitudinal growth takes place.
What can a deficiency of growth hormone during bone formation cause?
-decreased osteoclast activity
-inadequate calcification of bone
-increased osteoclast activity
-decreased epiphyseal plate activity - Correct Answer --decreased
epiphyseal plate activity
Lengthwise, long bone growth during infancy and youth is exclusively
through ________.
-differentiation of osteoclasts into osteocytes
-interstitial growth of the epiphyseal plates