Test 2 Flashcards
Synarthrosis
Immovable joint, plural = syntharoses
Amphiarthrosis
Slightly moveable joint, amphiarthtoses
Diarthrosis
Freely moveable joint, plural = diarthroses
Three structural types of joints
- Fibrous joints 2. Cartilaginous joints 3. Synovial joints
Fibrous joint
No synovial cavity; bones held together by dense CONNECTIVE tissue, rich in collagen fibers
Cartilaginous joints
No synovial cavity, bones held together CARTILAGE
Synovial joints
+synovial cavity, United with the dense irregular CT of an articular capsule and often accessory ligament
Three types of fibrous joints
- Sutures - skull 2. Syndesmoses 3. Interosseus Membranes
Sutures location
Only found between bones of the skull
Gomphosis
Dental-alveolar joint = cone-shaped peg into a socket-teeth and their sockets found in the maxilla/mandible
Periodontal disease
Degeneration and inflammation of this ligament; may permit movement at that point. Periodontal ligament connects the tooth to the socket, permitting no matter movement (synarthosis)
Interosseous Membrane location
Between radius and ulna Between tibia and fibula
Name the three functional types of joints
- Synarthrosis 2. Amphiarthrosis 3. Diarthosis
Osteology
the study of bone structure and the treatment of bone disorders.
What are the Basic Functions of Bone and the Skeletal System?
- Support (structural framework of the body. Supports soft tissue and points of attachments for tendons). 2. Protection (protection of internal organs-pelvis/ribs; spine; skull) 3. Assistance in movement (provide a surface for muscular attachment; contraction of muscles will pull on bones to produce movement) 4. Mineral homeostasis (calcium & phosphorous storage) 5. Blood cell production (Red Marrow-Hematopoiesis) 6. Triglyceride storage (yellow marrow mainly adipose cells)
Sharpey_s fibers (perforating fibers)
thick bundles of collagen that extend from the periosteum into bone extracellular matrix.
What is the most abuntant mineral salt?
Calcium Phosphate (CA3(PO4)2)
Most abundant to least abundant in bone histology
Crytalized Mineral Salts (55); Collagen Fibers (35); Water (15)
What are the four types of cells?
Osteoprogenitor; Osteoblast; Osteocytes; Osteclasts
Functions of Osteoclasts.
Resporption; Regulation of serum Calcium
Unit of bone
Osteons
What do ateries do?
carries blood TO bone tissue
What do veins do?
carries blood away from bone tissue
PERIOSTEAL ARTERIES
small arteries accompanied by nerves; enter diaphysis of the bone through perforating (Volkmann_s canals). Function: supply periosteum and outer part of compact bone.