Yes, capillaries are nearly everywhere in your body.
Each alveolus is surrounded by a network of capillaries, which are tiny blood vessels responsible for the exchange of oxygen and carbon dioxide with the surrounding tissues. This network allows efficient gas exchange to occur in the lungs.
the air goes into your lungs. In your lungs there are billions of tiny air sacs. Surrounding each air sac is a network of blood capillaries. The air sacs and the blood capillaries are separated by a thin membrane. Across this membrane the air sacs give the blood capillaries oxygen and they blood capillaries give the air sacs carbon dioxide. We breathe out this carbon dioxide!
The stomach
Arteries,veins and capillaries are the blood vessels which help in transporting blood from one organ to another organ.
From my limited understanding - it is the kidney.
Capillaries
vein
peritubular capillaries
The glomerulus are a network of capillaries surrounding the renal tube. peritubular capillary beds
yes capillaries are connected to heart because heart is a muscular organ and the exchange of materials between heart walls and blood occurs through capillaries.
United Network for Organ Sharing was created in 1984.