Histology - Chapter 8
During stage 3 of long bone growth, osteoblasts begin to lay down bone on calcified cartilage. 1. FALSE 2. TRUE
true
During stage 3 of long bone growth, two secondary centers of ossification form in epiphyseal area. 1. TRUE 2. FALSE
true
Electron micrographs show that the collagen fibers in bone have the same 64 nm banding pattern as shown by collagen fibers in other tissues. 1. TRUE 2. FALSE
true
The organic component of bone is composed primarily of: 1. calcium 2. cells 3. collagen fibers 4. hydroxyapatite
collagen fibers
The type of bone growth which starts as a cartilage model is called: 1. Organic 2. Inorganic 3. intramembranous 4. Endochondral
Endochondral
The type of bone growth exhibited by the flat bones of the skull in which bone is laid down on areas where there are many collagen fibers is called: 1. Organic 2. Intramembranous 3. Inorganic 4. Endochondral
Intramembranous
Which statement below is not true for cartilage and bone: 1. both have a matrix strengthened by collagen fibers 2. both are avascular 3. both have connective tissue covering called a periosteum 4. both contain cells embedded in a ground substance
both are avascular
The last step in the path to producing bone tissue is: 1. calcification of cartilage 2. laying down of reticular tissue 3. decalcification of cartilage 4. formation of cartilage model of bone
calcification of cartilage
Once the cartilage model in bone formation is calcified, the chondrocytes present in the cartilage: 1. die 2. divide many more times 3. become osteocytes 4. become osteoblasts
die
During stage 3 of long bone growth, epiphyseal plates form but disappear after birth. 1. TRUE 2. FALSE
false
In the first stage of endochondral long bone formation, bone formation occurs first in the endochondrium of the diaphysis. 1. TRUE 2. FALSE
false
In the first stage of endochondral long bone formation, the periosteal collar forms in the epiphysis region. 1. FALSE 2. TRUE
false
The first step in intramembranous bone growth is the formation of a hyaline cartilage model 1. FALSE 2. TRUE
false
The formation of a periosteal collar occurs during the final stage of long bone growth 1. TRUE 2. FALSE
false
The fetal skeleton is first modeled as what type of cartilage before being replaced by bone? 1. areolar cartilage 2. elastic cartilage 3. hyaline cartilage 4. reticular cartilage
hyaline cartilage
In the process of bone formation, hyaline cartilage arises from: 1. mast cells 2. dense connective tissue 3. mesenchyme 4. fibroblasts
mesenchyme
The type of bone cell responsible for the secretion of the bone matrix and found in areas of new bone formation is called a(n): 1. osteoclast 2. osteoblast 3. fibroblast 4. osteocyte
osteoblast
Mesenchyme cells follow blood vessels into the diaphysis of the growing long bone and differentiate into: 1. osteoblasts 2. osteocytes 3. osteoclasts 4. chondrocytes
osteoblasts
The type of bone cell formed from blood monocytes and having from 15 - 20 nuclei per cell which participates in bone resorption is called a(n): 1. fibroblast 2. osteoclast 3. osteocyte 4. osteoblast
osteoclast
During stage 2 of long bone growth, blood vessels migrate into the center of the diaphysis through holes in the periosteal collar formed by erosion of bone by: 1. osteocytes 2. osteoblasts 3. osteoclasts 4. chondrocytes
osteoclasts
The type of bone cell found in fully formed bone which lives in small spaces called lacunae is called a(n): 1. osteoclast 2. osteoblast 3. osteocyte 4. fibroblast
osteocyte
A boney latticework called trabeculae can be seen in: 1. compact bone 2. hyaline cartilage 3. elastic cartilage 4. spongy bone
spongy bone
During stage 3 of long bone growth, the rate at which calcified cartilage erodes and is replaced by spongy bone is the same rate at which cartilage cells of the epiphyseal plate divide. 1. TRUE 2. FALSE
true
The mechanism of cartilage calcification is thought to involve the release of phosphate ions due to action of alkaline phosphatase in chondrocytes. 1. TRUE 2. FALSE
true
If bone is placed in weak acid for an extended period of time, the resulting bone becomes: 1. very brittle 2. very flexible 3. very stiff 4. very discolored
very flexible