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HHB Unit 1.8
Energy Syst Muscle Cells
12
Biology
Not Applicable
05/26/2017

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Term
lactate
Definition
produced from pyruvate in mammalian muscle cells during strenuous exercise when the muscle cells do not get sufficient oxygen
Term
muscle fatigue
Definition
painful condition caused by the accumulation of lactic acid in muscles
Term
oxygen debt
Definition
builds up during fermentation in muscle cells (can be paid back during rest)
Term
skeletal muscle
Definition
muscles attached to the skeleton that bring about movement of the body
Term
slow-twitch (type 1) fibres
Definition
type of muscle fibres used in endurance activities
Term
fast-twitch (type 2) fibres
Definition
type of muscle fibre used in short bursts of activity
Term
NADH
Definition
source of hydrogen needed to convert pyruvate to lactate
Term
liver
Definition
organ which converts lactate back to pyruvate and glucose when oxygen debt is repaid
Term
mitochondria
Definition
cell organelle more abundant in slow twitch fibres than fast twitch
Term
fats
Definition
major storage fuel in slow twitch muscle fibres
Term
glycogen
Definition
major storage fuel in fast twitch muscle fibres
Term
myoglobin
Definition
oxygen storing protein in slow twitch muscle fibres
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