What is the structure of the blood vessels?

Answer 1

The concave shape of red blood cells maximises the surface area for gaseous exchange of carbon dioxide and oxygen. It perfectly holds 4 haemoglobin molecules, each of which works to store and release oxygen when needed. The importance of its' shape is exemplified by the genetic disease sickle cell anaemia, whereby misshapen red blood cells (called sickled cells) can no longer carry oxygen in the same way and can become lodged in small capillary blood vessels - which can kill.

Additionally, they are very durable and able to squeeze in and out of capillaries to reach every part of the body whilst maintaining a large surface area for exchange. Cells which loose this elastic property are removed by the spleen and liver.

Answer 2

Well if you think about it xylem are the thick secondary cell walls, often deposied unevelny in a coil-like patter so that they may stretch so if you can figure way to see how its related to now then it's good *

Answer 3

Blood vessels are tubular structures that form a network throughout the body to transport blood. They consist of three main types: arteries that carry oxygenated blood away from the heart, veins that carry deoxygenated blood back to the heart, and capillaries that connect arteries and veins and facilitate the exchange of nutrients and waste products with tissues. The walls of blood vessels are composed of three layers: the tunica intima, tunica media, and tunica externa.

Answer 4

It's structure is a series of long tubes, blood vessels, and that helps their function which is to transport blood.

Answer 5

Venules- Drains blood from capillaries into veins, for return to the heart == ==

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Answer 6

Flat disk like shape alloes it to carry more oxygen and carbon dioxide around the body.

Answer 7

it look likes a branch of trees

Answer 8

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