Answer:
Hemangioma
Explanation:
Hemangioma usually refers to a non-cancerous type of tumor that occurs due to the abnormal growth of blood vessels. It can occur in any parts of the body, but they very are mostly present in the neck and he face portion. They can present right from the time of birth, but they usually develop in the body of the babies within the first few months after the birth of a baby.
It generally occurs in two types, namely-
- Capillary hemangiomas- It occurs in the outer skin layers
- Cavernous hemangiomas- It occurs in the deeper skin layers, and also mostly near and around the eye.
Answer:
total blood volume
Explanation:
Resistance to blood flow or vascular resistance refers to the slow down of the blood flow due to friction between the flowing blood and the walls of the blood vessels.
The resistance to blood flow is regulated by the viscosity of blood, total length, and diameter of the blood vessels. Higher blood viscosity imparts more resistance to the blood flow. The reduced diameter of blood vessels also restricts the blood flow through the blood vessels. Similarly, the resistance to the blood flow is directly proportional to the total length of the blood vessels.
However, total blood volume present in the body of the organisms does not affect vascular resistance. The total blood volume affects the blood pressure which in turn would affect the systemic vascular resistance.
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