cholesterol
This did not help me at all
yes, it is a fatty substance
The fatty substance in the middle of your bones is yellow marrow.
Capillaries
Circulatory system and Cardiovascular system
Myelin is a fatty sheath around axons found in the peripheral nervous system.
The cardiovascular system sends oxygen to the muscles.
The heart is a part of the cardiovascular system.
the muscular and cardiovascular system.
I don't really know. I think it really doesn't make you smart.
What is a fatty substance found only in animal tissues
The muscles use oxygen transported by the cardiovascular system.