Biologys exam 2 Flashcards
Skeletal system (32 cards)
The imbalance of osteoclastic and osteoblastic activity results in which pathologic condition?
Osteoporosis (bone disease that makes bones more brittle)
What are the three types of connective tissue?
Bone, ligaments, cartilage
What are bones?
The hard elements of the skeleton
What are ligaments?
Dense fibrous connective tissue and attach bones to each other
What is cartilage?
Specialized connective tissue, cushions the vertebrae, reduces the friction in joints
5 important functions of the bone
- Support
- Protection
- Movement
- Blood cell formation
- Mineral storage: calcium and phosphate
What does the compact bone do?
Forms shaft and ends, contains marrow space
What is the spongy bone?
A lightweight porus bone tissue that makes up the interrior of bones
Cells in the bones
Osteoblasts, osteoclasts, osteocytes
Types of bone
Long, flat, short irregular
What is the osteon/haversian system?
Cellular arrangment
What is periosteum?
Connective tissue covering
What is the chondroblasts?
Cartiliage-forming cells
What are the osteoblasts?
young bone-forming cells
What are the osteocytes?
The mature bone cells
What are the osteoclasts?
Bone dissolving cells
What is the function of ligaments?
Attach bone to bone
What is the function of cartilage?
provide support under pressure
How many bones make up the skeleton?
206
What does red bone marrow play a role in?
The formation of red blood cells
What part of the skeleton is the midline of the body?
Axial skeleton
What part of the skeleton is the parts you can jiggle around?
Appendicular skeleton
How many bones make up the skull?
Over 2 dozen
What do the cranial bones do?
Protect the brain
