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10 terms

The Muscular System

STUDY
PLAY
bonds of Phosphate tail
ATP is stored in the
ATP
energy
cellular respiration
ATP is created by
Cellular respiration
the breakdown of food molecules and conversion to ATP- using oxygen and glucose
Capillaries
How does oxygen get to the muscles?
RBC with protein hemoglobin
What carries oxygen?
Myoglobin
protein in muscle cells that stores oxygen
Myofibrils
contain the protein filaments actin and myosin
Skeletal Muscle Contraction
Through a series of chemical reactions, the actin and myosin slide past one another, shortening the muscle and pulling on its attachment(bone)
Sliding Filament Theory
The head of a myosin cross bridge can attach to an actin binding site and bend slightly, pulling the actin with it. Then the head releases, straightens and combines with another binding site farther down the actin filament