BIOS 252 MIDTERM EXAM WITH COMPLETE SOLUTIONS

BIOS 252 MIDTERM EXAM WITH COMPLETE SOLUTIONS


frequency of stimulation Correct Ans-the higher the frequency, the greater the force




isotonic contraction Correct Ans-muscle shortens because muscle tension exceeds load




isometric contraction Correct Ans-Muscle contracts but there is no movement, muscle


stays the same length




origin Correct Ans-attachment to stationary bone




Insertion Correct Ans-attachment to movable bone




lever system Correct Ans-Consists of a lever (bone), effort (muscle action), resistance


(weight of object to be moved), and fulcrum (joint).

,BIOS 252 MIDTERM EXAM WITH COMPLETE SOLUTIONS
1st class lever Correct Ans-fulcrum between effort and load


ex: head resting on spine




2nd class lever Correct Ans-the load is between the fulcrum and the effort


ex: standing on tip toes




3rd class lever Correct Ans-The effort is between the fulcrum and the load


ex: bending elbow




Agonist Correct Ans-prime mover




antagonist Correct Ans-opponent of prime mover




Synergist Correct Ans-Muscle that assists a prime mover

, BIOS 252 MIDTERM EXAM WITH COMPLETE SOLUTIONS


What are the 4 properties of muscle tissue? Correct Ans-excitability, contractility,


extensibility, elasticity




What are the types of muscular tissue? Correct Ans-skeletal, cardiac, smooth




What is the function of skeletal muscle? Correct Ans-movement of bones, posture




What is the function of cardiac muscle? Correct Ans-pump blood throughout the body




What is the function of smooth muscle? Correct Ans-contraction




What are connective tissue components? Correct Ans-epimysium, perimysium,


endomysium