ANP1111-tissues Exam Questions with Correct Answers| Latest Update 100% Solved
Canaliculi small canals that connect the lacunae with each others, which is also connected to
central canal of Haversian system
(passage ways between lacunae-using it as a way to communicate)
intersitial lamellae fill the gaps between forming osteons or are leftovers of osteons that
were partially destroyed by bone remodeling (finds the in between the spaces of the osteons)
circumferential lamellae sheets of bone located just deep to periosteum; extend around
entire circumference of shaft
(wrap around the outside of the bone
central (haversian canal runs up the middle
perforating (volkmann's) canal perpendicular to long axis of bone and to haversian canals
(link the various central canals)
microscopic structure of spongy bone -contains trabeculae, lamellar arranged osteocytes
and canaliculi
-trabeculae arranged along lines of stress; helps bone to resist stress
-trabeculae only a few cell layers thick; contain irregularly arranged lamella and osteocytes
interconnected by canaliculi
-there are no osteons
-nutrients diffuse through canaliculi from the marrow spaces between the trabeculae to reach
osteocytes
intramembranous ossification bone develops from a fibrous CT membrane containing
mesenchymal cells
, -cranial bones of the skull nad the clavicles-these are flat bones
-begins at about 8 weeks of embryonic development
Endochondrally ossification -bone development via the replacement of a hyaline cartilage
model
-all bones below the skill (expect the clavicles)
-begins in second month of development
what happens to the hyaline cartilage when the secondary ossification is complete? 1) on
the epiphyseal surfaces as the articular cartilages
2) at the junctions of diaphysis and epiphyses where it forms the epiphyseal plates- this is the
area where long bones continue to grow
what happens during infancy and youth to bone growth? long bones lengthe entirely by
interstital growth of the epiphyseal plates and all bones grow in thickness by appositional
growth
-most bones stop growing during adolescence or in early adulthood- some facial bones
continue to grow throughout life
describe the way bones grow the ends of the bones are reshaped as they grow. (remeber
that the epiphyseal plates are located in the wider parts of long bones)
bones must be reshaped to be incorporated into the disphysis but the has to get strong and
thick as the bone lengthens
SUMMARY: bone is destroyed by osteoclasts and laid down by osteoblasts on both the inner
and outer surfaces of a growing long bone
bone remodeling hte epiphyseal plate stays the same size throughout childhood and
adolescence
Canaliculi small canals that connect the lacunae with each others, which is also connected to
central canal of Haversian system
(passage ways between lacunae-using it as a way to communicate)
intersitial lamellae fill the gaps between forming osteons or are leftovers of osteons that
were partially destroyed by bone remodeling (finds the in between the spaces of the osteons)
circumferential lamellae sheets of bone located just deep to periosteum; extend around
entire circumference of shaft
(wrap around the outside of the bone
central (haversian canal runs up the middle
perforating (volkmann's) canal perpendicular to long axis of bone and to haversian canals
(link the various central canals)
microscopic structure of spongy bone -contains trabeculae, lamellar arranged osteocytes
and canaliculi
-trabeculae arranged along lines of stress; helps bone to resist stress
-trabeculae only a few cell layers thick; contain irregularly arranged lamella and osteocytes
interconnected by canaliculi
-there are no osteons
-nutrients diffuse through canaliculi from the marrow spaces between the trabeculae to reach
osteocytes
intramembranous ossification bone develops from a fibrous CT membrane containing
mesenchymal cells
, -cranial bones of the skull nad the clavicles-these are flat bones
-begins at about 8 weeks of embryonic development
Endochondrally ossification -bone development via the replacement of a hyaline cartilage
model
-all bones below the skill (expect the clavicles)
-begins in second month of development
what happens to the hyaline cartilage when the secondary ossification is complete? 1) on
the epiphyseal surfaces as the articular cartilages
2) at the junctions of diaphysis and epiphyses where it forms the epiphyseal plates- this is the
area where long bones continue to grow
what happens during infancy and youth to bone growth? long bones lengthe entirely by
interstital growth of the epiphyseal plates and all bones grow in thickness by appositional
growth
-most bones stop growing during adolescence or in early adulthood- some facial bones
continue to grow throughout life
describe the way bones grow the ends of the bones are reshaped as they grow. (remeber
that the epiphyseal plates are located in the wider parts of long bones)
bones must be reshaped to be incorporated into the disphysis but the has to get strong and
thick as the bone lengthens
SUMMARY: bone is destroyed by osteoclasts and laid down by osteoblasts on both the inner
and outer surfaces of a growing long bone
bone remodeling hte epiphyseal plate stays the same size throughout childhood and
adolescence
