Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
35 Cards in this Set
- Front
- Back
|
A. Loose Connective Tissue, AreolarB. Gel like matrix with all three fiber typesC. Wraps and cushions organsD. Under Epithelia of bodyE. Dots- Fibroblast nuclei, thin dark fibers- elastic fibers, thicker lighter fiberst are elastic fibers
|
A: What kind of tissue is this?B. Description?C. Function?D. Location?E. What are the dots and the different types of fibers?
|
|
|
A. Loose connective tissue, adiposeB. Closely packed adipocytes with nucleus pushed to the sideC. Provides reserve fuelD. Under skin, around kidneys and eye balls; within abdomon and beasts
|
A. What kind of tissue is this?B. Description?C. Function?D. Location?
|
|
|
A. Loose connective tissue, reticularB. Network of reticular fibersC. Supports white blood cells, mast cells and macrophagesD. Lymphoid organs
|
A. What kind of tissue is this?B. Description?C. Function?D. Location?
|
|
|
Bone can be classified by shape into what categories?
|
Flat or Long
|
|
|
Bone can be classified by mechanism of formation into what categories?
|
Intramembranous - cartilage is NOT used as a template. Mesenchymal cells differentiate into bone cells and immediately start laying down bone. Endochondral - bone formation with cartilage model
|
|
|
Which of the following are categories of microscopic structure that bone can be classified into?A. CancellousB. CompactC. LamellarD. SpongyE. TrabecularF. Woven
|
Microscopic structure is by age: C. Lamellar (aka mature) and F. Woven (aka immature)All the rest are examples of macroscopic structure (type) classification. Spongy = cancellous = trabecular. Compact is the other type.
|
|
|
Which of the following are categories of macroscopic structure that bone can be classified into?A. CancellousB. CompactC. LamellarD. SpongyE. TrabecularF. Woven
|
Spongy = cancellous = trabecular. Compact is the other type. The others are examples of microscopic structure (by age).
|
|
|
Bone is vascular. How do nutrients get through it?
|
Neurovascular channels extend thru compact bone and between periosteum and inside the bone.
|
|
|
True or False:Bone exhibits ONLY appositional growth.
|
TRUE!! Only layer over previous layer. No interstitial growth!
|
|
|
Regarding regional divisions in the architecture of a long bone, match each description with its term.1. compact bone with red or yellow marrow2. compact outside, spongy inside3. demarcation of growth Diaphysis, Epiphyseal plate or line, Epiphysis
|
1. Diaphysis2. Epiphysis3. Epiphyseal plate or line
|
|
|
The [ endosteum / periosteum ] is the outer layer of dense irregular CT whose inner layer is an osteogenic layer with osteoblasts.
|
Periosteum.
|
|
|
The [ endosteum / periosteum ] is the lining inside of bone (marrow cavity; all internal surfaces of bone that is only comprised of osteogenic layer with osteoblasts.
|
Endosteum.
|
|
|
Regarding architecture of a flat skull bones, the periosteum outersurface is called the ________ while the inner surfaces is continuous with the _______.
|
pericranium, dura mater
|
|
|
_______ secrete chondroitun sulfate and collagen type I fibers, which all together are called osteoid. A. OsteoblastsB. OsteocytesC. Osteoclasts
|
A. Osteoblasts
|
|
|
What is osteoid?
|
It is chondroitin sulfate + collagen type I fibers. Secreted by osteoblasts.
|
|
|
What do osteoblasts secrete?
|
Chondroitin sulfate and Collagen Type I fibers
|
|
|
When does an obsteoblast become an osteocyte?
|
Osteoblast becomes an osteocyte when they are surrounded by their matrix.
|
|
|
What is the mechanism of bone deposition? (2 or 3 steps, depending on your perspective)
|
1. Osteoblast will synthesize osteoid (Type I collagen, chondroitin sulfate)2. Ossification of osteoid. Oteoblast has alkaline phosphatase secreted into osteoid. Calcium is deposited on the collagen fibers in form of hydoxyapatite crystals.
|
|
|
In mechanism of bone deposition, particularly the ossification of osteoid, __________ is secreted into osteoid and then ______ is deposited on the ________ to form _______ crystals.
|
ALKALINE PHOSPHATASE is secreted into osteoid, CALCIUM is depositied on the COLLAGEN FIBERS in the form of HYDOXYAPATITE crystals
|
|
|
[ Osteoblasts / Osteoclasts / Osteocytes ] are located within lacunae and have cell processes that extend thru canaliculli.
|
OsteocytesThese also have gap junctions that join cells (how they get nutrition)
|
|
|
[ Osteoblasts / Osteoclasts / Osteocytes ] gobble up bone constantly, are multinucleated, and commonly seen within Howship's lacunae or resorption canals.
|
Osteoclasts
|
|
|
[ Osteoblasts / Osteoclasts / Osteocytes ] are seen within Howship's lacunae or resorption canals.
|
Osteoclasts
|
|
|
Regarding the intercellular matrix of bones, the organic portion composed of ________ and ______ accounts for about ____% of bone weight whereas the inorganic portion, composed of crystal-resembling __________ makes up about ____% of bone weight.
|
Organic portion (35%) : Collagen Type I fibers and chondroitin sulfates. Note: of the organic components, 90% of it is collagen type I fibers.Inorganic portion (65%) : crystal resembling hydroxyapatite
|
|
|
Regarding intercellular matrix of bone, the [ inorganic / organic ] portion provides bone with toughness and resiliency.
|
organic portion (makes up 35% of bone weight) relays toughness and resiliency
|
|
|
Regarding intercellular matrix of bone, the [ inorganic / organic ] portion provides bone with it's hardness.
|
inorganic portion = bone hardness and 65% of bone weight
|
|
|
Compact bone has three types of lamella: Haversian / Osteon system, Outer and Inner circumferential lamellae, and Interstitial lamellae. Describe em.
|
see side three or "H" for written
|
|
|
What is Sharpey's fibers?A. bundles of collagen where tendon inserts into boneB. fibers lining Volkmann's canalsC. fibers lining cement lines
|
A. bundles of collagen where tendon inserts into bone
|
|
|
True or False:Spongy / Cancellous bones do not contain haversian systems.
|
True. They are nourished by blood vessels in the bone marrow cavity.
|
|
|
This refers to macroscopic structure of bone. A. Compact vs. SpongyB. Woven vs. LamellarC. Intramembranous vs. Endochondral
|
A. Compact vs. Spongy
|
|
|
This refers to microscopic structure of bone. A. Compact vs. SpongyB. Woven vs. LamellarC. Intramembranous vs. Endochondral
|
B. Woven vs. Lamellar
|
|
|
This refers to the two mechanisms of bone formation. A. Compact vs. SpongyB. Woven vs. LamellarC. Intramembranous vs. Endochondral
|
C. Intramembranous vs. Endochondral
|
|
|
This refers to macroscopic structure of bone. A. Compact vs. SpongyB. Woven vs. LamellarC. Intramembranous vs. Endochondral
|
A. Compact vs. Spongy
|
|
|
This refers to microscopic structure of bone. A. Compact vs. SpongyB. Woven vs. LamellarC. Intramembranous vs. Endochondral
|
B. Woven vs. Lamellar
|
|
|
This refers to the two mechanisms of bone formation. A. Compact vs. SpongyB. Woven vs. LamellarC. Intramembranous vs. Endochondral
|
C. Intramembranous vs. Endochondral
|
|
|
True or False: Osteoclasts belong to the monocyte lineage and are not related to osteoblasts or osteocytes.
|
True. Digital Histo: Tissues > Connective > Bone and Bone Marrow > As a Tissue 4 of 15
|
