Chapter 7: The Bone
What are the two types of connective tissue present in most of the bones in the body?
Spongy bone (20%) and Compact bone (80%)
Please show the class where your frontal bone is, your parietal bone and occipital bone (superior view)
forehead, top of head, back of the head
What are the names of how joints are classified based on the movement they permit?
synarthrosis, amphiarthrosis, diarthrosis
What part of the bone connective tissue houses osteocyte cytoplasmic projections that permit cellular contact and communication?
Canaliculi
Please name the sutures of the cranial bones
coronal suture, squamous suture, lambdoid suture, sagittal suture
What are the 3 primary functions of the synovial fluid in the joint?
Lubricates the joint
Absorbs shock
Nourishes cartilage and removes waste
Please explain the process of interstitial growth of cartilage
1. A chondrocyte within a lacunae begins to exhibit mitotic activity
2. Two cells are produced by mitosis from one chondrocyte and occupy one lacunae
3. Each cell produces new matrix
4. Cartilage grows internally
Please describe the size and body shape of cervical vertebra, thoracic vertebra and lumbar vertebra
cervical: small and kidney-shaped
thoracic: medium-sized and heart shaped
lumbar: large and oval/round
What is a gomphosis?
fibrous joint type anchors teeth into the sockets of the jaw.
Please name the zones 1-5 of cartilage
zone 1: resting cartilage
zone 2: proliferating cartilage
zone 3: hypertrophic cartilage
zone 4: calcified cartilage
zone 5: zone of ossification
Name the parts of the sternum and tell the class how many true ribs we have, false ribs and floating ribs
(top to bottom) manubrium, body and xiphoid process
true ribs (1-7)
false ribs (8-12)
floating ribs (11-12)
What bones articulate at the talocrural joint?
tibia
fibula
talus
What are the four steps (just name of steps) of bone fracture repair?
1. A fracture hematoma forms
2. A fibrocartilaginous callus forms
3. A bony callus forms
4. The bone is remodeled
Please name the bones of the carpal (DISTAL ROW)
trapezium, trapezoid, capitate, hamate