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bone tissue
Bones
| Question | Answer |
|---|---|
| Types of bone tissue | Compact & Spongy (diffused) |
| Bone Tissues are made up of | 1)scattered cells(osteocytes) 2)Matrix (67% mineral salt, 33 collagen fibers) |
| Where can compact bone be found | Shaft of long bones & covering on all bones |
| compact bones is composed of | osteons |
| In each osteon we find these 7 structures, Name them | haversian (central) canal, Lamellae, osteocytes, canaliculi, volkmann's canal, interstial lamellae, cirmumferential lamellae. |
| What is haversian central canal | vertical tube with blood vessels |
| What is Lamellae | concentric layers of bone, that are organized around Haversian canal |
| From what is lamellae formed | collagen oriented in different directiions |
| Where are osteocytes located | in lacunae between lamellae |
| why is osteocytes location important | so they can communicate with neighboring osteocytes through gap junctions |
| What is the purpose of canaliculi | it horizontally connects osteocytes within osteons to haversian canal |
| What is the purpose of volksmann's canal | Horizontally connects neighboring osteons |
| What is interstitial lamellae | bone layers btw osteons & are the remains of remodeled osteons |
| what is circumferential lamellae | bone layers at external suface of compact bone |
| circuferential lamelae is in osteon for | strength |
| where is spongy bone found | in the interior of short, flat, irregular bones and end of long bones |
| a characteristic of spongy bone | is trabeculae |
| Is trabeculae only found in spongy bones: TRUE OR FALSE | TRUE |
| What is trabeculae | a linear growth pattern forms framework of bony projections |
| what is on trabecula | osteocytes in lacuna |
| what purpose does the large space between trabecule provide | it makes bone lighter |
| What does trabeculae contain | red bone marrow with blood cells producing cells RBM from embryonic blood vessels |