ati mobility Flashcards
mobility
another way to say motion or movement
- body designed for motion requires muscles, skelton, and nerve to function in unison
nursing goal for mobility
assist in preserving, maintaining, and restoring as much mobility and function as possible
muscular system
- provides motor power
- 600 muscles
- half person weight
- when contracted across a joint, creates a force to pull against the skelton
- high demand for oxygen and glucose
four properties of a muscle
(CEEE)
- contractibility: ability to shorten and than relax
- Excitability: muscle fibers can receive and respond to nerve or hormone stem. resting muscle is negatively charged. When stimulated (excited), it becomes positively charged and active
- Extensibility: ability to stretch which occurs stimulations as other muscles contract
- elasticity: ability to bounce back or recoil to its original state after being contracted or extended
3 main muscle types
- cardiac: only located in heart and functions involuntarily
- smooth: located in blood vessels and the visceral organs and functions involuntarily
- skeletal: attached to skeleton by tendons and functions voluntarily
skeletal system
- 206 bones
- bones are hard connective tissue
- protect and support internal organs and muscles
- store important minerals
- composed of layers
once bones matured they undergo
process of remodeling where old bone is constantly being replaced with new bone
cartilage
firm yet flexible connective tissue
- ears, nose, larynx, ribs, intervertebral discs, knees, ankles
flexion
bend, reduces angle between bones
extension
straighten the limb
abduction
move away from baseline
adduction
bring closer to baseline
pronation
turning face backwards
supination
turing to face forward
circumduction
circular motion