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ducts
Tiny tube-like veins called phloem transport material inside a plant. For example, water from the roots travels up these tubes to reach the leaves, and the energy from photosynthesis travels down the tubes to reach the roots.
Xylem and Phloem
They're called "nanotubes".
They are organelles;
Capillaries are the tiny tubes that carry blood. These tubes connect arteries and veins.
There are millions of the tiny tubes in each of the kidney to carry blood and other nutrients both inside and outside of the kidney. The artery basically divides into many tiny blood vessels throughout the kidney.
Capillaries are the tiny tubes that carry blood. These vessel connect small arteries to small veins, and are the site of gas exchange.
xylem \
ducts
There are millions of the tiny tubes in each of the kidney to carry blood and other nutrients both inside and outside of the kidney. The artery basically divides into many tiny blood vessels throughout the kidney.
The tiny tubes that carry blood are the capillaries. Capillaries connect arteries and veins.
Capillaries are the tiniest of the blood vessels. They connect arteries and veins.
Tiny tube-like veins called phloem transport material inside a plant. For example, water from the roots travels up these tubes to reach the leaves, and the energy from photosynthesis travels down the tubes to reach the roots.
Capillaries are the smallest of the blood vessels, the tubes that carry blood. They connect arteries and veins.
Capillaries are the tiniest blood vessels. They are the site of gas exchange and connect veins and arteries.
There is a special tissue inside a plant's stem called xylem that consists of cells that are essentially tiny straws that pull water from the plant's roots up to the leaves. It is mostly dead tissue at maturity. Then there is phloem, which carries sugars created by photosynthesis from the leaves down to the roots. It is alive.