Why would a sprinter experience muscle fatigue before a marathon runner would?
What will be an ideal response?
A sprinter requires large amounts of ATP for a short burst of activity. To supply this ATP, the sprinter's muscles rely on large glycogen reserves and anaerobic metabolism. Because the muscle fibers have relatively few mitochondria to generate additional ATP, fatigue resistance is also low. Conversely, marathon runners derive most of their ATP from the more efficient process of aerobic metabolism.
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The major enzyme system responsible for most drug interactions:
a. Cyt P550 b. Cyt P450 c. Cyt P350 d. Cyt P250
Which structure of the brain does not receive any auditory input?
A) superior olivary nucleus of the pons B) inferior colliculi of the midbrain C) auditory cortex of the temporal lobe D) medial geniculate nucleus of the thalamus E) pineal gland of the epithalamus
From the choices listed here, the most accurate way to assess the oxygen-carrying capacity of the blood is probably to measure the ________
A) coagulation time B) blood type C) hematocrit D) hemoglobin content
The ________ is a capillary network that produces a blood filtrate that enters the urinary tubules.
A. interlobar capillary B. vasa recta C. glomerulus D. peritubular capillary