BIOS 1300 Exam 3 UPDATED Exam Questions and CORRECT Answers
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Course
BIOS 1300
Institution
BIOS 1300
BIOS 1300 Exam 3 UPDATED Exam
Questions and CORRECT Answers
4 types of bone cells - Correct Answer- -osteoprogenitor cells
-osteoblasts
-osteocytes
-osteoclasts
what are osteoprogenitor cells - Correct Answer- stem cells
some osteoprogenitor cells move on to be ____________ - Correct Answer...
BIOS 1300 Exam 3 UPDATED Exam
Questions and CORRECT Answers
4 types of bone cells - Correct Answer- -osteoprogenitor cells
-osteoblasts
-osteocytes
-osteoclasts
what are osteoprogenitor cells - Correct Answer- stem cells
some osteoprogenitor cells move on to be ____________ - Correct Answer- osteoblasts
3 places osteoprogenitor cells are located - Correct Answer- endosteum, inner layer of
periosteum, central canal
osteoblasts - Correct Answer- bone forming cells
production ________ with bone stress and fractures - Correct Answer- increases
osteoblasts synthesize - Correct Answer- organic material in bones
osteocytes - Correct Answer- matured osteoblasts
osteocytes live in - Correct Answer- lacunae
the lacunae are interconnected by - Correct Answer- canaliculi
osteocytes function - Correct Answer- in homeostatic maintenance
osteoclasts - Correct Answer- bone resorption cells
,osteoclasts develop from - Correct Answer- bone marrow stem cells
up to how many nuclei are in osteoclasts - Correct Answer- 50
bone formation begins in the ______ and continues through ______ - Correct Answer-
embryo, adolescence
2 methods of bone formation - Correct Answer- intramembraneous and endochondral
ossification
intramembraneous ossification begins in ___________ that is the source of the
____________ - Correct Answer- embryonic connective tissue, future dermis
intramembraneous ossification produces flat bones of - Correct Answer- -skull
-maxilla
-zygomatic
-mandible
-part of clavicle
endochondrial ossification - Correct Answer- hyaline cartilage is replaced with bones tissue
how many main steps in endochondrial ossification - Correct Answer- 6
1st step in endochondrial ossification - Correct Answer- fetal hyaline cartilage model
develops
2nd step in endochondrial ossification - Correct Answer- cartilage calcifies and a periosteal
bone collar forms around diaphysis
3rd step in endochondrial ossification - Correct Answer- primary ossification center forms in
diaphysis
, 4th step in endochondrial ossification - Correct Answer- secondary ossification center forms
in epiphysis
5th step in endochondrial ossification - Correct Answer- bone replaces cartilage except
articular cartilages and epiphyseal plates
6th step in endochondrial ossification - Correct Answer- epiphyseal plates ossify and form
epiphyseal lines
what happens during the 3rd step of endochondrial ossification - Correct Answer- -
chondrocytes enlarge and leave holes
-walls of lacunae calcify and block nutrients
-blood vessels invade and osteoblasts enter
bone growth in length is called ________ growth - Correct Answer- interstitial
bone growth in width is called __________ growth - Correct Answer- appositional
interstitial growth is dependent upon - Correct Answer- growth of cartilage within the
epiphyseal plate
five microzones within epiphyseal plate - Correct Answer- -reserve cartilage
-cell proliferation
-cell hypertrophy
-calcification
-bone deposition
growth occurs in which microzones - Correct Answer- cell proliferation, cell hypertrophy
zone of reserve cartilage - Correct Answer- furthest from the marrow cavity
zone of cell proliferation - Correct Answer- chondrocytes multiply (mitosis)
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