Microtubules
A. are the smallest components of the cytoskeleton.
B. provide structure and support to the cytoplasm.
C. are a component of mitochondria.
D. are solid, supporting rods of protein.
E. contain the protein myosin.
Answer: B
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The cardiac center is responsible for controlling ____________________.
vasoconstriction heart rate vasodilation all of the choices correct
Parasympathetic and sympathetic influence on heart rate is controlled by reflexes.
Answer the following statement true (T) or false (F)
Proteoglycans trap large quantities of water and spring back to original shape after compression. They are found in
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