Activity and Exercise (Musculoskeletal System) Lecture Key Highlights Flashcards
Flexion
Bending the elbow
(decreasing the angle of the joint)
Extension
Straightening the arm at the elbow
(Increasing the angle of the joint)
AbDUCTION
Movement of the bone away from the body (think exercise machine - open the legs)
Adduction
Movement of bone toward the midline of the body (think exercise machine - close the legs)
Rotation
Movement of bone around a central axis
Circumduction
Movement of the distal part of the bone in a circle while the proximal end remains fixed
Eversion
Turning the sole of the foot outward by moving the ankle joint (think externally/ outward rotating ankle)
Inversion
Turning the sole of the food inward by moving the ankle joint
(think Internal ankle circles)
Pronation
Moving the bones of the forearm so that the palm of the hand faces downward when held Infront of the body
(Hands down- typing on keyboard)
Supination
Moving the bones of the forearm so that the palm of the hand faces upward when held Infront of the body
(hands facing up)
Which two joint movements involve the hands?
Pronation
Supination
Which two joint movements involve the foot?
Eversion
Inversion
When describing balance, input from the inner ear, vision and muscles are controlled by which cranial nerve?
8th cranial nerve
Coordinated movement involves cerebral functioning, list the three parts of the brain that are used
Cortex
Cerebellum
Basal Ganglia
Describe what the cortex does when coordinating movement
Initiates voluntary motor activity
Describe what the cerebellum does when coordinating movement
Coordinates the motor activities of movement
(Pt will have clumsy, unsure, uncoordinated movement if this is injured)
Describe what the basal ganglia do when coordinating movement
Maintains posture
_____ motor develops before _____ motor
Gross before fine
Joint mobility: which is stronger?
Flexion is stronger than extension
During isotonic exercise, what is occurring?
Muscle contractions
Active movement
Active ROM
Running
Walking
Swimming
Cycling
Increased blood flow to whole body
During isometric exercise, what is occurring?
Muscle contractions WITHOUT moving the joint (muscle length does NOT change)
does NOT change HR
Example: If a pt is in a cast, they can tense (squeeze) their muscle and relax.
Describe the benefits of exercise
Increase mobility, stability, ROM
Reduces weakness
Reduces depression and anxiety