The right side of the heart squeezes dark_
_blood from the body out
through the
artery to the lungs. Carbon dioxide is dropped off in the
lungs and
is picked up, then the blood returns to the heart in this
_loop. Thin walls of
__allow gases, nutrients, and
other materials to easily pass between the blood and surrounding body tissues. Major capillary beds are
found in the lungs, intestines, kidneys, liver, and skeletal muscles. The left side of the heart pumps bright
red newly
blood through the
to all other areas
of the body in the
_loop