mosqitoes
EPIDERMIS
The epidermis.
the process through which the tumor supports its growth by creating its own blood supply is called angiogenesis
The medical term for tissues without their own blood supply is avascular tissue. These tissues rely on diffusion to obtain nutrients and oxygen from nearby blood vessels. Examples include cartilage and cornea.
That has never come in to question as you cant "reserve" your own blood. Blood banks are open
No, but a good guess. They are called the coronaries.
Coronary arteries supply blood to the heart itself.
The subcutaneous layer.
The heart has its' own blood supply by way of the coronary system.
Angiogenesis
Because the heart itself needs a blood supply in order to function. If the heart is starved of its own blood - it will stop.
Each villus has its own blood supply to maximize absorption of nutrients from the small intestine. This allows for efficient exchange of substances between the villi and blood vessels, optimizing nutrient uptake from digested food. Having individual blood supplies also helps maintain a concentration gradient for effective absorption.