I believe, for the artery, they have, an open, circular lumen an a thick media
Veins on the other hand, have somewhat collapsed lumen and a thinner media. Arteries are blood vessels that carry blood out of the heart to other parts of the body, all arteries carry oxygenated blood except the pulmonary artery which carries deoxygenated blood from the heart to the lungs. Veins carry blood from other body parts to the heart, all veins carry deoxygenated blood except the pulmonary vein which caries oxygenated blood from the lungs to the heart.
Answer:
The key to the adaptation of living beings on the planet is the adaptation to abiotic factors such as temperature, light, salinity, humidity; and to biotic factors, which are represented by the action of the other organisms.
Explanation:
Answer:
B
Explanation:
The do vary in size and temperature because as the layers go down to the core it gets harder and magma is more present
