EXERCISE SCIENCE FINAL EXAMS SET COMPLETE QUESTIONS WITH ACCURATE ANSWERS COLLECTION

EXERCISE SCIENCE FINAL EXAMS SET
COMPLETE QUESTIONS WITH ACCURATE
ANSWERS COLLECTION

●● Kinematics
Answer: study of motion without regard of the forces that either produce
or resist movement


●● Sacromere
Answer: Contractile unit of muscle


●● Troponin
Answer: regulatory protein that binds to actin, tropomyosin, and calcium
to expose myosin binding sites


●● Tropomyosin
Answer: covers myosin binding sites on the actin molecules


●● M line
Answer: middle of sarcomere


●● Myofibrils

,Answer: Contains sarcomeres and myofilamints


●● Acetylcholine
Answer: A neurotransmitter that enables learning and memory and also
triggers muscle contraction


●● Cross-Bridge
Answer: The connection of a myosin head group to an actin filament
during muscle contraction (the sliding filament theory).


●● Power-Stroke
Answer: action of myosin pulling actin inward (toward the M line)


●● sarcoplasmic reticulum
Answer: where calcium goes at the end of sliding filament theory


●● Motor Unit
Answer: - Group of fibres activated via the same nerve basic functional
cavity of muscular activity


●● INTRAmuscle Coordination
Answer: the capacity to activate different motor units simultaneously
within a SINGLE muscle

, ●● INTERmuscle Coordination
Answer: the capacity to activate DIFFERENT muscles to produce a
movement


●● Isometeric Contraction
Answer: iso: "same" meteric: "length"
Load > Muscle force
No visible change in length


●● Concenteric contraction
Answer: muscle overcomes a load
SHORTENS


●● Eccenteric contraction
Answer: muscle overcomes a load
LENGTHENS


●● Isokinetic Contraction
Answer: -iso: "same" kinetic: "motion"
-neuromuscular system works: 1. at a constant speed, 2. high resistance
-strengthens muscles UNIFORMLY at all angles of motion