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What are the differences between an artery and a vein?
Arteries carry blood away from the heart to the other parts of the body. Arteries also have thicker walls as the blood pressure is much higher having a closer proximity to the heart. Veins carry the blood back from the other areas of the body to the heart. Simply put, an artery carries blood out of the heart, and a vein carries blood into the heart.
Why are arteries muscular?
Arteries have to endure a much higher pressure, but the muscle wall surrounding the arteries are actually there to constrict and relax to help regulate blood pressure. Since blood pressure is one of your more important functions, the arteries are constantly constricting and relaxing to keep you BP at a reasonable level. They also play a role in blood shunting during your fight or flight response, but that tends to deal more with capillaries.In short the smooth muslce lining your arteries have various functions, but the key functions to their existence are :1.) Dealing with the higher pressure and not bursting by causing reinforcement to the pressure.2.) To constrict and diulate in order to help regulate blood pressure.There are other reasons for this but most fringe more on the molecular level or deal with secondary messengers, G proteins.
What political party tends to favor less government regulations and services?
Republican
What law in science says that you have to wear a seatbelt?
An object in motion tends to stay in motion.
Can you have osteoarthritis in the back?
Not normally Gout tends to attack the extremity's like toes and fingers.
