Bone Textures Compact bone Dense layer Spongy cancellous bone Honeycomb of trabeculae found at the bone Structure of a Long Bone Diaphysis shaft ID: 631095
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Slide1
Bone Tissue Composition
Chapter 6Slide2
Bone Textures
Compact bone
Dense
_______________ layer
Spongy (
cancellous
) bone
Honeycomb of
trabeculae
found at the bone ________________.Slide3
Structure of a Long Bone
Diaphysis
(shaft)
_______________ collar
surrounds
medullary
(marrow) cavity
Medullary
cavity in
____________ contains
fat (yellow marrow)Slide4
Structure of a Long Bone
Epiphyses
____________
____________ bone
interior
Epiphyseal
line (remnant
of_______________)
Articular
(hyaline) cartilage
on _____________Slide5
Figure 6.3a-b
Proximal
epiphysis
(b)
(a)
Epiphyseal
line
Articular
cartilage
Periosteum
Spongy bone
Compact bone
Medullary
cavity (lined
by endosteum)
Compact bone
Diaphysis
Distal
epiphysisSlide6
Membranes of Bone
Periosteum
_______________ fibrous
layer
Inner
osteogenic
layer
Osteoblasts
(
bone-
___________cells)Osteoclasts (bone-____________cells)Osteogenic cells (
______________ cells)Nerve fibers, nutrient blood vessels, and lymphatic vessels enter the bone via nutrient foraminaSecured to underlying bone by ____________fibersSlide7
Membranes of Bone
Endosteum
Delicate membrane on
____________surfaces
of bone
Also contains
osteoblasts
and
osteoclastsSlide8
Figure 6.3c
(c)
Yellow
bone marrow
Endosteum
Compact bone
Periosteum
Perforating
(Sharpey’s) fibers
Nutrient
arteriesSlide9
Structure of Short, Irregular, and Flat Bones
Periosteum
-covered
______________bone
on the outside
Endosteum
-covered
______________bone
within
Spongy bone called
diploë in flat bones Bone marrow between the _______________.Slide10
Microscopic Anatomy of Bone
Cells of bones
Osteogenic
(
osteoprogenitor
) cells
Stem cells in
________________
and
_______________ that
give rise to osteoblastsOsteoblasts_______________________ cellsSlide11
Microscopic Anatomy of Bone
Cells of bone
________________
Mature bone
cells
Osteoclasts
Cells that
____________________
(
reabsorb
) bone matrix Slide12
Microscopic Anatomy of Bone: Compact Bone
Haversian
system, or
osteon
—structural unit
- ________________________
Weight-bearing
Column-like matrix tubes
_______________________
Contains blood vessels and nervesSlide13
Figure 6.6
Structures
in the
central
canal
Artery with
capillaries
Vein
Nerve fiber
Lamellae
Collagen
fibers
run in
different
directions
Twisting
forceSlide14
Microscopic Anatomy of Bone: Compact Bone
Perforating (Volkmann’s) canals
At right angles to the central canal
Connects blood vessels and nerves of the periosteum and central canal
Lacunae—small cavities that contain osteocytes
Canaliculi—hairlike canals that connect lacunae to each other and the central canalSlide15
Figure 6.7a-c
Endosteum lining bony canals
and covering trabeculae
Perforating
(Volkmann’s) canal
Perforating (Sharpey’s) fibers
Periosteal blood vessel
Periosteum
Lacuna (with
osteocyte)
(a)
(b)
(c)
Lacunae
Lamellae
Nerve
Vein
Artery
Canaliculi
Osteocyte
in a lacuna
Circumferential
lamellae
Osteon
(Haversian system)
Central
(Haversian) canal
Central
canal
Interstitial lamellae
Lamellae
Compact
bone
Spongy boneSlide16
Microscopic Anatomy of Bone: Spongy Bone
________________
Align along lines of stress
No
osteons
Contain irregularly arranged lamellae,
osteocytes
, and
canaliculi
Capillaries in
endosteum supply nutrientsSlide17
Figure 6.3b
(b)
Lacunae
Lamellae
Nerve
Vein
Artery
Canaliculus
Osteocyte
in a lacuna
Central
canalSlide18
Chemical Composition of Bone: Inorganic
Hydroxyapatites
(mineral salts)
_______________of
bone by mass
Mainly
_________________
phosphate crystals
Responsible for
___________
and _____________ to compression