A. It acts as a pacemaker.
B. To pump blood through the heart.
C. Prevents backflow of blood to the left atrium.
D. Prevents backflow of blood to the right atrium.
Ans: Answer: D, Prevents backflow of blood to the right atrium.
Quiz What is the fundamental unit of muscle contraction?
A. Myofibril
B. Sarcomere
C. Myosin
D. Sarcolemma
Ans: Answer: B, Sarcomere
,Quiz Which chamber of the heart is responsible for pumping oxygenated blood to the body?
A. Right ventricle
B. Left ventricle
C. Right atrium
D. Left atrium
Ans: Answer: B, Left ventricle
Quiz What is the natural curve in the lumbar region of the spine?
A. Kyphotic curve
B. Scoliotic curve
C. Lordotic curve
D. Myotic curve
Ans: Answer: C, Lordotic curve
Quiz Adenosine triphosphate production via "anaerobic" glycolysis is associated with the
significant formation of what by-product?
A. Pyruvic Acid
B. Phosphoric Acid
C. Citric Acid
D. Lactic Acid
,Ans: Answer: D, Lactic Acid
Quiz The changes in muscle size associated with long-term resistance training is most likely due
to increases in _____.
A. Muscle fiber cross-sectional diameter.
B. Muscle fiber number.
C. Connective tissue thickness.
D. Hydration state of the muscle.
Ans: Answer: A, Muscle fiber cross-sectional diameter.
Quiz Downhill walking/jogging/running is characterized by eccentric activation of which of the
following muscle groups?
A. Hamstrings
B. Gastrocnemius
C. Brachioradialis
D. Quadriceps femoris
Ans: Answer: D, Quadriceps femoris
Quiz What is the typical resting blood pressure response to long term aerobic exercise in a
hypertensive individual?
A. Both systolic and diastolic pressures will increase.
B. Both systolic and diastolic pressures will decrease.
C. Systolic will increase, while diastolic will remain unchanged.
, D. Systolic will decrease, while diastolic will remain unchanged.
Ans: Answer: B, Both systolic and diastolic pressures will decrease.
Quiz How does heart rate increase in relation to work rate and oxygen uptake during dynamic
exercise?
A. Exponentially
B. Linearly
C. Curvilinearly
D. Inversely
Ans: Answer: B, Linearly
Quiz Which cardiovascular training approach, if repeated frequently, is most likely going to lead
to overtraining?
A. One intensive day followed by three easy days.
B. One long day followed by three shorter duration days.
C. Two consecutive intensive days, followed by one easy day.
D. A medium intensive day followed by two easy days.
Ans: Answer: C, Two consecutive intensive days, followed by one easy day.
Quiz What feature is unique to skeletal muscle as compared to cardiac muscle?
A. Absence of striations
B. Presence of branching