APHY 201 - Exam 3 Study Questions Questions and Correct Answers/ Latest Update / Already Graded

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APHY 201 - Exam 3 Study Questions
Questions and Correct Answers/ Latest
Update / Already Graded
The functional unit of a skeletal muscle fiber is the _____.



a. sarcomere

b. myofibril

c. sarcolemma

d. sarcoplasmic reticulum

e. myofilament

Ans: a. sarcomere


The force exerted by a contracting muscle on an object is called:



a. the load

b. muscle tension

c. motor unit

d. complete tetanus

Ans: b. muscle tension


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As stimulus strength increases, muscle tension increases and more
motor units become involved leading to stronger contractions. this
phenomenon is called _____.

Ans: Recruitment


True or False: Concentric and eccentric contractions are types of
isometric contractions

Ans: False - types of isotonic contractions


In which type of contraction does the muscle generate force as it
lengthens?



a. isometric

b. concentric

c. eccentric

d. all of the above

Ans: C. eccentric (a type of isotonic contraction)


Which energy pathway provides the most ATP for contraction?



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