ANSWERS LATEST UPDATE 2025
1. What is the name of the connective tissue that surrounds skeletal muscle-
Ans >> Epimysium
2. How many neuromuscular junctions does each muscle fiber have Ans >> 1
3. Which branch of the nervous system is responsible for activating skeletal
muscles Ans >> Somatic
4. Which division of the skeleton contains the skull and vertebral column Ans
>> Axial Skeleton
5. Which connective tissue connects muscle to bone Ans >> Tendon
6. What is the approximate pH of human blood at rest Ans >> 7.4
7. The heart is composed of how many chambers Ans >> 4
8. What two things occur to facilitate a redistribution of blood flow at the
onset of physical exercise Ans >> Skeletal muscle arteriole dilation and nonactive
organ arteriole constriction
9. What refers to the amount of air moving into and out of the lungs at rest
during normal breathing Ans >> Tidal volume
10. What is correct regarding maximal oxygen uptake (VO2max) Ans >> It
relates to the heart's maximal ability to eject blood (maximal cardiac output), it
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,represents the maximal ability of skeletal muscle to extract oxygen, and it
represents the ability to use maximal AVO2 difference to aerobically produce
energy
11. What are characteristics of bioenergetics Ans >> Breakdown of food,
conversion of chemical energy to mechanical energy, and breakdown of chemical
bonds
12. How many molecules of ATP are produced from glycolysis of one molecule
of glucose in blood? Ans >> 2
13. What energy system is the primary source of energy at rest and during
aerobic activities Ans >> Oxidative
14. Glycogen becomes the preferred fuel source at intensities above about
what percent of maximal oxygen uptake Ans >> 60-75%
15. When relying on the slower ATP-producing energy systems, ATP can be
produced as long as the body has a good supply of what Ans >> Muscle
glycogen, fatty acids, and protein
16. In biomechanics, the term body may refer to what Ans >> the human
body, limb segment, and piece of chalk
17. What is the equation that represents Work (W) Ans >> Force x Distance
moved (displacement)
18. What is correct regarding rate of force development Ans >> It is the ratio of
the change in force over the change in time, it is time rate of change of force, and it
can be improved with resistance training
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, 19. What is correct regarding the use of heavy metal chains on barbells Ans
>> they can be used with linear movements, the chains add resistance throughout
the range of motion, and the chains can be used in exercises such as the squat or
bench press
20. With water resistance, if the surface area is larger, then the exercise will
be Ans >> harder
21. What is correct regarding stress responses to resistance exercise? Ans >>
it can lead to increase in bone mineral density, it leads to muscle growth, and it
results in increased strength
22. Steroid hormones Ans >> Testosterone, estrogen, and any hormone
derived from cholesterol
23. What is correct regarding endocrine adaptations to resistance exercise
Ans >> - Testosterone has been shown to increase, resistance exercise leads to up
regulation of androgen receptor content, and growth hormone does not appear to
increase
24. What is correct regarding individuals who possess the ACTN XX genotype-
commercial DNA testing companies can inform individuals if they possess i
Ans >>
the ACTN gene is responsible for producing a structural Z-line protein found mainly
in type II muscle fibers, and being a carrier of the ACTN XX genotype does not
present deleterious health consequences
25. Approximately how often does resistance exercise need to be performed
to prevent detraining Ans >> 1 or 2 session per week
26. What increases during an aerobic exercise bout Ans >> Respiratory exchang
rate
3 m/