arteires
arterioles
Arteries
Yes they are. Arteries are blood vessels going away from the heart which is Why they are always under pressure. This is achieved when the heart constricts and relaxes
Abnormally low Blood Pressure is called "Hypotension"(Hypo-= Below, beneath, under, less than normal, deficient, in the lowest state of; Tension= to strain or stretch.)Blood pressure is the force(strain) on the blood vessels' walls. Thus, Hypotension is the less than normal strain on the walls of the blood vessels.
The renal artery brings oxygenated blood under high pressure to the kidney, where it branches into smaller vessels to deliver blood to the nephrons for filtration.
The heart pumps the blood through the arteries, causing the arteries to be under pressure. The veins are under very little pressure as they are the vessels that collect the deoxygenated blood on it's way back to the heart. The venous blood is helped along by the movement of the muscles in the body as the body moves.
Around the sweat glands, there are multiple blood vessels in a net-like form." Under the pressure of great stress the vessels constrict. Then as the anxiety passes "the blood vessels dilate to the point of rupture. The blood goes into the sweat glands." As the sweat glands are producing a lot of sweat, it pushes the blood to the surface - coming out as droplets of blood mixed with sweat. Around the sweat glands, there are multiple blood vessels in a net-like form." Under the pressure of great stress the vessels constrict. Then as the anxiety passes "the blood vessels dilate to the point of rupture. The blood goes into the sweat glands." As the sweat glands are producing a lot of sweat, it pushes the blood to the surface - coming out as droplets of blood mixed with sweat.
No, veins are not under high pressure. High-pressure vessels are the arteries.
When your body is under pressure or exposed to high amounts of physical activity, such as exercising, the blood vessels expand to allow more blood to go to where it needs to go. Your heart rate speeds up so more blood can go through the blood vessels to the muscles or tissue needing it. Hope i helped, :)
arteries are blood vessels that are part of the system carrying blood under pressure from the heart to the rest of the body-OR-Arteries are blood vessels that carry oxygenated blood out to the body/lungs. They are the largest form of vessel. In other words Arteries are blood vessels that carry rich blood away from the heart throughout the body. Arteries send rich blood away throughout the cells.
Blood vessels appear blue under the skin because of the way light interacts with the skin and the blood vessels. The skin absorbs red light, while blue light is reflected back, making the blood vessels appear blue.
Blood pressure increases due to the constiriction of the vessels under the effect of Angiotensin and also under the effect of aldosterone which increase the reabsorbtion of sodium and therefore water from renal tubules.