These demands include: increased demand on the lungs to facilitate a greater respiratory rate increased exchange of oxygen and carbon dioxide between the blood and alveoli in the lung increased transport of oxygen and carbon dioxide in the blood more blood pumped through the body from the heart to the lungs and skeletal muscles increased exchange of oxygen and carbon dioxide from the blood to the active skeletal musculature increased generation of energy in the form of adenosine triphosphate (ATP) in the muscle cells greater demand for removal and buffering of hydrogen ions generated during the production and utilization of energy in the muscle greater need to maintain thermal balance through decreased vasoconstriction and increased vasodilation of sweat glands in the skin resulting in an increased sweating rate Activation of the skeletal system to generate muscular strength and endurance, which requires: contraction of the abdominal muscles (rectus abdominous, external obliques, internal obliques, serratus and erector spinae) contraction of the lower body and leg muscles (adductor longus, rectus femoris, vastus lateralis, vastus medialis, soleus, gastrocnemius, semitendinosus, semimembranosus, biceps femoris, gluteus maximus, gluteus medius) generation of ATP to facilitate muscle contraction and force generation removal and buffering of hydrogen ions generated during the production and utilization of energy in the contracting muscle Event 2: Ladder Event Physiological demands are placed on the cardiovascular and respiratory systems, which include: increased demand on the lungs to facilitate a greater respiratory rate increased exchange of oxygen and carbon dioxide between the blood and alveoli in the lung increased transport of oxygen and carbon dioxide in the blood more blood pumped through the body from the heart to the lungs and skeletal muscles increased exchange of oxygen and carbon dioxide from the blood to the active skeletal musculature increased generation of energy in the form of ATP in the muscle cells greater demand for removal and buffering of hydrogen ions generated during the production and utilization of energy in the muscle greater need to 
(These demands; include; increased demand on the lungs to facilitate a greater respiratory rate) (Ladder Event Physiological demands; are placed; on the cardiovascular and respiratory systems) Context(Ladder Event Physiological demands are placed,List([1467, 1512))):(increased exchange of oxygen and carbon dioxide between the blood and alveoli in the lung increased transport of oxygen and carbon dioxide in the blood more blood pumped through the body from the heart to the lungs and skeletal muscles increased exchange of oxygen and carbon dioxide from the blood to the active skeletal musculature increased generation of energy in the form of adenosine triphosphate (ATP) in the muscle cells greater demand for removal and buffering of hydrogen ions generated during the production and utilization of energy in the muscle greater need to maintain thermal balance through decreased vasoconstriction and increased vasodilation of sweat glands in the skin resulting in an increased sweating rate Activation of the skeletal system to generate muscular strength and endurance, which requires: contraction of the abdominal muscles (rectus abdominous, external obliques, internal obliques, serratus and erector spinae) contraction of the lower body and leg muscles; rectus; femoris) (hydrogen ions; generated; T:during the production and utilization of energy in the muscle) (the cardiovascular and respiratory systems; include; increased demand on the lungs to facilitate a greater respiratory rate increased exchange of oxygen and carbon dioxide between the blood and alveoli in the lung increased transport of oxygen and carbon dioxide in the blood more blood pumped through the body from the heart to the lungs and skeletal muscles increased exchange of oxygen and carbon dioxide from the blood to the active skeletal musculature increased generation of energy in the form of ATP in the muscle cells greater demand for removal and buffering of hydrogen ions generated during the production and utilization of energy in the muscle greater need) (hydrogen ions; generated; T:during the production and utilization of energy in the muscle) (hydrogen ions; generated; T:during the production and utilization of energy in the contracting muscle Event 2) (muscular strength and endurance; requires; )
Ladder Event Physiological demands are placed,List([1467, 1512))
These demands Ladder Event Physiological demands increased exchange of oxygen and carbon dioxide between the blood and alveoli in the lung increased transport of oxygen and carbon dioxide in the blood more blood pumped through the body from the heart to the lungs and skeletal muscles increased exchange of oxygen and carbon dioxide from the blood to the active skeletal musculature increased generation of energy in the form of adenosine triphosphate (ATP) in the muscle cells greater demand for removal and buffering of hydrogen ions generated during the production and utilization of energy in the muscle greater need to maintain thermal balance through decreased vasoconstriction and increased vasodilation of sweat glands in the skin resulting in an increased sweating rate Activation of the skeletal system to generate muscular strength and endurance, which requires: contraction of the abdominal muscles (rectus abdominous, external obliques, internal obliques, serratus and erector spinae) contraction of the lower body and leg muscles hydrogen ions the cardiovascular and respiratory systems hydrogen ions hydrogen ions muscular strength and endurance
include are placed rectus generated include generated generated requires
increased demand on the lungs to facilitate a greater respiratory rate
on the cardiovascular and respiratory systems
femoris
T:during the production and utilization of energy in the muscle
increased demand on the lungs to facilitate a greater respiratory rate increased exchange of oxygen and carbon dioxide between the blood and alveoli in the lung increased transport of oxygen and carbon dioxide in the blood more blood pumped through the body from the heart to the lungs and skeletal muscles increased exchange of oxygen and carbon dioxide from the blood to the active skeletal musculature increased generation of energy in the form of ATP in the muscle cells greater demand for removal and buffering of hydrogen ions generated during the production and utilization of energy in the muscle greater need
T:during the production and utilization of energy in the muscle
T:during the production and utilization of energy in the contracting muscle Event 2