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Why is it important that arteries be able to stretch?
Arteries have to stretch in response to the force of the blood being pumped from the heart. If they didn't the amount of pressure would be higher. It could cause a leak or rupture in the brain. The pressure is what is measured and called BP.
Blood in arteries is red because it is rich in oxygen?
The pulmonary arteries are the only ones not carrying oxygenated blood. Arteries transport blood away from the heart and veins are to carry blood back to the heart. When you think this way, you may be able to visualize which vessels has oxygenated blood.
What effect do you think narrowing of the arteries would have on the functioning of the heart?
The rate of the blood being pumped would be slowed down, thus resulting in less air (oxygen) being able to be produced
What is coronary artery ectasia?
Coronary Artery Ecstasia is the abnormal dilation of arteries surrounding the heart. Instead of having narrowing arteries, the arteries are enlarged and then go back to normal size. The problem is the blood builds up in the dilated part of the artery and has to make its way down through the normal part of the artery This is a danger that can cause the blood to clot before it is able to move through the narrow part of the artery causing an aneurysm.
What can cause a heart attack?
Imagine A and B are both arteries leading to the heart. B is partially clogged by plaque build up.() A() BThe lower one (b.) is semi-clogged and thus does not provide as much oxygen to muscles such as the heart. The Heart muscle will begin to die if not treated quickly.
What do arteries have to be able to do when the heart pumps blood into them?
the answer is stretch
Why don't young people get heart attacks?
They have yet to develop physiological changes that cause diseases and disorders that compromise the heart to the point of heart attack. Theie bodies are able to compensate far more than older people.
Why is it important that arteries be able to stretch?
Arteries have to stretch in response to the force of the blood being pumped from the heart. If they didn't the amount of pressure would be higher. It could cause a leak or rupture in the brain. The pressure is what is measured and called BP.
How does the structure of the arteries enable them to withstand high pressure?
Arteries have thick muscular walls that are able to contract and relax to help regulate blood pressure. Additionally, the walls are made of strong, elastic fibers like collagen and elastin that allow them to stretch and recoil in response to the force of the blood flow, which helps them withstand high pressure without rupturing.
Blood in arteries is red because it is rich in oxygen?
The pulmonary arteries are the only ones not carrying oxygenated blood. Arteries transport blood away from the heart and veins are to carry blood back to the heart. When you think this way, you may be able to visualize which vessels has oxygenated blood.
How do you find a cows heart?
It is on the left side of the animal, you are able to hear the heart beating with a stethoscope behind the left shoulder close to the girth area.
What effect do you think narrowing of the arteries would have on the functioning of the heart?
The rate of the blood being pumped would be slowed down, thus resulting in less air (oxygen) being able to be produced
What actions allow blood to return to the heart?
The blood is able to move to and from the heart through the contraction of the heart muscle. These contractions build up pressure and cause you to have what is commonly known as blood pressure. That build up of pressure pushes the blood throughout the arteries and veins and enables it to circulate throughout the body.
How is blood able to travel upwards against gravity?
Blood is able to travel upwards against gravity due to the pumping action of the heart, the presence of valves in veins that prevent backflow, and the contraction of surrounding muscles that help to push blood back towards the heart. Additionally, the difference in pressure between the arteries and veins also plays a role in facilitating blood flow back to the heart.
What causes death in car crashes?
the rapid deceleration from whatever speed the car was doing down to zero in a very quick time and over a miniscule distance causes the arteries connecting our organs to disconnect. eg. the main arteries of the heart disconnecting due to the impact. the human body isn't able to take such deceleration.
Why are the walls of arteries relatively thicker than those of the corresponding veins?
In general, the walls of arteries are thicker than those of veins. The tunic media in particular tends to be much heavier and contains substantially more smooth muscle and elastic tissue. This anatomical difference reflects a functional diffeerence in the 2 types of vessels. Arteries, which are closer to the pumping action of the heart, must be able to expand as an increased volume of blood flows off into the circulation during diastole. Their walls much be sufficiently stong and resilient to withstand such pressure fluctuations. The tunica media is thicker in the arteries mainly for maintaing blood pressure and continuous blood circulation.
Is high cholesterol directly associated with bad heart health?
High cholesterol is associated with bad heart health in the sense that when there is too much choleserol in your blood it builds up on the walls of your arteries, which decreases the blood flow that is able to get to your heart. To find out more about high cholesterol and bad heart health with ways to help prevent it go to http://www.webmd.com/heart-disease/guide/heart-disease-lower-cholesterol-risk
