MSK Flashcards
(330 cards)
What are the functions of the skeletal system
Support
Protection
Movement
Mineral homeostasis
Blood cell production
Triglyceride storage
Where does blood cell production occur within
Red bone marrow
Where does triglyceride storage take place within
Yellow bone marrow
What bones are longer than wide such as thighs, legs, arms, fingers, toes
Long bones
What bones are almost cube shaped such as most wrist and ankle bones
Short bones
What bones are thin and extensive surface such as cranial bones, sternum, ribs and scapulae
Flat bones
What bones do not fit in the above categories such as vertebrae, and facial bones
Irregular bones
What are the parts of a long bone
Diaphysis - the shaft
Epiphyses - ends of the long bone
Metaphyses - contains the “growth plate” and is located BETWEEN the shaft and and end of bone
What cells make up the microscopic structure of the bone
Osteoblasts - bone building cells
Osteocytes - maintain bone, exchange nutrients and waste within the blood
Osteoclasts - digest bone matrix for normal bone turnover
What type of joint has no cavity, just dense irregular connective tissue
Fibrous joints
What type of joints have no cavity and the bones are held together by cartilage
Cartilaginous joints
What type of joints have synovial cavities and many other components such as ligaments
Synovial joints
What is located in the skull between bones of the skull and add strength to the joints
Sutures: example of fibrous joints
What is a dense irregular tissue between long bones such as the radius-ulna, and tibia-fibula
Interosseous membrane: examples of fibrous joints
What allows articulating bones fit more tightly
Articulate discs (menisci)
What are sacs that contain synovial fluid and are located where friction can occur (decreases friction)
Bursae
What are the functions of ligaments
Composed of connective tissue
Found throughout the skeletal system
Function to connect bone to bone
Ligaments are commonly injured by spraining or tearing of ligaments
What is the function of tendons
Tough band of fibrous connective tissue
Functions to connect muscle to bone: skeletal muscle contracts and moves bones via tendons, very dense and more capable of withstanding tension
What are the different types of muscular tissue in the body
Skeletal muscle
Cardiac muscle
Smooth muscle
What are the functions of the different types of muscles together
Produce body movement
Stabilize body positions
Store and move substances
Produce heat
What is the decrease in the angle between articulating bones
Flexion
What is the increase in angle between articulating bones
Extension
What is the bending beyond 180 degrees, such as moving humerus backwards behind the anatomical plane
Hyperexenstion
What is the movement of the bone away from the midline
Abduction