ch. 9 part 4 anatomy Flashcards
What occurs if effort exceeds resistance?
Movement occurs
What is effort arm?
Part of lever from fulcrum to point of effort?
What is fulcrum?
Rotates around fixed point
What is resistance arm?
Part of lever from fulcrum to point of resistance
What is first-class lever?
Fulcrum is between effort and resistance
What is second-class lever?
Resistance is between fulcrum and effort; rare in body
What is third-class lever?
Effort applied between resistance and fulcrum; most common
What is a sprain?
Stretching or tearing of ligaments without fracture or dislocation; over inversion
What is pott fracture?
Over eversion and medial malleolus avulsed off of tibia
What week do joints form?
6 week of development
What is arthritis?
Rheumatic disease involving damage to articular cartilage