A AND P MUSCLES

Question 1

What is the stem cell for muscle cells?

Answer 1

myoblasts

Question 2

Energy is released when…

Answer 2

The correct answer is: ATP is broken down into ADP and phosphate.

Question 3

The layer of dense irregular connective tissue that surrounds the entire skeletal muscle is the

Answer 3

epimysium

Question 4

When a rested muscle is stimulated repeatedly with maximal stimuli at low frequency allowing for complete relaxation between stimuli, it is called

Answer 4

treppe

Question 5

Which of the following characterizes both skeletal and smooth muscle cells?

Answer 5

excitable

Question 6

What metabolic process will produce the greatest amount of ATP?

Answer 6

aerobic respiration

Question 7

The functional contractile units of a skeletal muscle fiber are the

Answer 7

sarcomere

Question 8

In relaxed muscle, the myosin-binding site on actin is blocked by ________.

Answer 8

tropomyosin

Question 9

Which phase of a muscle twitch takes the longest amount of time?

Answer 9

relaxation phase

Question 10

Which list of muscle structures proceeds from smaller to larger in diameter?

Answer 10

myofilament, myofibril, muscle fiber, fascicle

Question 11

Each actin filament is composed of

Answer 11

two strands of actin molecules wrapped together.

Question 12

Which of the following describes increasing the force of a muscle contraction by increasing the number of muscle fibers that contract?

Answer 12

recruitment

Question 13

Which of the following is NOT true regarding a muscle contraction?

Answer 13

is an electrochemical event