Ch 1 & Ch2 A&P/Intro Flashcards
Six Functions of the skeletal system
Support
Protection
Movement
Mineral homeostasis
Blood Cell Production
Triglyceride Storage
Types of bones:
Thigh, leg, arm, fingers, toes
Long Bones
Types of bones:
Wrist and ankle bones
Short Bones
Types of bones:
Cranial bones, sternum, ribs, scapulae
Flat Bones
Types of bones:
Vertebrae, Facial bones
Irregular bones
Part of a long bone:
The Shaft
Diaphysis
Ends of the long bone
Epiphyses
Contains the growth plate (epiphyseal plate)
Located between the shaft and end of bone
Metaphyses
Bone building cells
Osteoblasts
Maintain bone
Exchange nutrients and waste with blood
These are osteoblasts encased in matrix they build
Osteocytes
Digest bone matrix for normal bone turnover
Osteoclasts
Joints are classified based on their:
Structure
Different Structures of joints
Fibrous
Cartilaginous
Synovial
Types of joints:
No cavity, just dense irregular connective tissue
Fibrous joints
Types of joints:
No cavity, bones are held together by cartilage
Cartilaginous joints
Types of joints:
Have synovial cavity and many other components such as ligaments
Synovial joints
Examples of fibrous joints
Sutures of the skull
Intraosseous membrane
Dense irregular tissue between long bones
- Radius-ulna
- Tibia-fibula
Interosseous membrane
Space containing fluid
Synovial cavity
Cartilage that reduces friction between bones for synovial joints
Articular cartilage
Synovial joints:
Allows articulating bones to fit more tightly
Articular discs (menisci)
Sacs that contain synovial fluid
Located where friction can occur, decreases friction
Bursae
Structure of Synovial Joints
Synovial Cavity
Articular Cartilage
Ligaments
Synovial membrane
Accessory ligaments
Articular discs
Bursae