WITH COMPLETE SOLUTIONS
GRADED A+ (VERIFIED ANSWERS)
TRUE - Answer-True or false: Muscles always pull, they NEVER push
-produce skeletal movement
-provide stability and protection to joints
-maintain body posture and position
-produce body heat - Answer-What are the functions of skeletal muscle?
1. whole muscle
2. fascicle
3. fiber
4. myofibril
5. sarcomeres (actin and myosin) - Answer-What are the 5 layers to muscle
organization?
-explains shortening of sarcomere
-cross-bridges form between actin and myosin filaments - Answer-Explain the sliding
filament theory.
static muscle contraction(still tension force
no joint motion occurs
ex. plank or wall sit - Answer-Isometric definition
can be concentric (muscle force > external force) or eccentric (muscle force < external
force)
Joint movement occurs
concentric-muscle tendon shortens
eccentric muscle tendon lengthens - Answer-Isotonic definition
TRUE - Answer-T or F : Joint movement can occur without any muscles contracting
skeletal and nueromuscluar systems - Answer-What systems work together to produce
and control human movements?
to understand effects of forces on physical functions and structures
-improve outcomes of our movements
-increase or maintain safety and health of tissues
-prevent injury - Answer-Why do we use biomechanics?