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the factor which limits ATP synthesis in the ATP-PCr metabolic pathway is:

depletion of phosphocreatine

where does ATP syntheis occur in the anaerobic glycolytic pathway

sarcoplasm

what is the difference between glucose and glycogen

glycogen is a stored form of glucose

which of the following best represents the order in which you would use each metabolic energy system for the purpose of running a marathon:

ATP - PCr -anaerobic glycolytic - oxidative

when a muscle is not contracting, active binding sites on an actin filament are covered by a thin, thread-like protein called:

tropomyosin

edward hitchcock jr:

kept detailed statistical records of exercising Amherst college undergrads

how many ATP are generated for every two H+ ions that enter the electron transport chain?

3

the harvard fatigue laboratory:

legitimized exercise physiology as its own area of study

the fields of exercise and sport physiology:

study how body's structures and functions are altered by exercise, apply physiological principles to an individual's training and performance, require an understanding of normal muscular and cardiovascular function

lactate is the byproduct of which metabolic energy system

anaerobic glycolytic

which of the following statements regarding VO2max is incorrect?

is determined by completing the wingate test

how long does it take for the body to remove lactate from muscle tissue following maximal intensity exercise?

20-40 min

the fast component of the process of oxygen recovery following exercise represents the time needed by the body to:

synthesize and restore muscle stores of ATP and PCr

type II muscle fibers use __ as fuel for muscular contraction and are most often used for ___

glycogen; high-intensity, short-duration events

what is a fasicle

bundle of muscle fibers

calcium when released into skeletal muscle tissue, causes which of the following to occur at the level of the sarcomere (question 16)?

two of the above: active binding sites for cross bridge formation are revealed and actin strands are pulled toward each other

the depletion of glycogen limits the production of ATP in which metabolic pathway

anaerobic glycolytic and oxidative

the term "anaerobic glycolysis is best defined as:

the catabolic metabolism of glycogen in the absence of oxygen

a motor unit:

consists of an alpha motor neuron and all the muscle fibers it innervates and is comprised of homogenous muscle fibers

the functional unit of skeletal muscle is called

a sarcomere

during aerobic glycolysis:

NADH and FADH2 deliver electrons to the electron transport chain

which of the following happens as a result of ATP binding to a myosin head?

separation of myosin from actin

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