The two upper chambers of the heart in which blood collects before passing it to the lower chambers are called

Olympic-caliber athletes may be able to increase their metabolic rate by
2000%.

Regular physical activity is linked to all of the following EXCEPT
lower endorphin levels.

In addition to pulse counting, one may also monitor exercise intensity by using
ratings of perceived exertion.

___________ supply oxygen-rich blood to the heart.
Coronary arteries

Fat is utilized as a fuel more efficiently during periods of
prolonged exercise.

The two upper chambers of the heart in which blood collects before passing it to the lower chambers are called
atria.

Adenosine triphosphate (ATP) is defined as
the basic form of energy used by cells.

Maximal oxygen consumption (VO2max) is
the best measure of the capacity of the cardiorespiratory system.

The nonoxidative energy system typically provides energy for
10–120 seconds.

The small blood vessels that connect the arteries and veins and distribute blood to all parts of the body are the
capillaries.

Excess loss of body fluid is called
dehydration.

The largest artery in the body is the
aorta.

During digestion, most carbohydrates are broken down into
glucose.

During systole, the heart is
contracting.

An appropriate exercise heart rate for an average individual is ________ of maximum heart rate.
75%