0
Circulatory System
Circulatory System is the category for questions about the human circulatory system, including questions about the human heart, arteries, and veins.
2,116 Questions
What is the medical term meaning Inflammation of the outer lining of the heart?
Pericarditis is the inflammation of the pericardium, a two-layer membrane which is the sac surrounding the heart.
paracarduim inflamation is inflamation of the paracarduim which is a thin membranic sac that surrounds and prtoects the heart.
Does the circulatory system remove wastes from the body?
Filtered by the kidney, liver, spleen, (am I missing any?) and enter the excretory system
Where does blood travel to pick up oxygen and release carbon dioxide?
Your blood receives oxygen from a process called external respiration which occurs in the lungs. When we breathe, we inhale and bring air from our environment into our lungs. Inside our lungs it comes into close contact with our blood inside millions of very small sacs called alveoli. It is here that a process of gas exchange, called diffusion, occurs. As the higher concentration of oxygen in the air comes close to the respiratory membrane, which separates our blood from the air, it allows oxygen to enter our blood and the excess carbon dioxide to leave. When we exhale, this excess carbon dioxide is released into the air and the oxygen-rich air outside our bodies is then ready to enter our lungs again to repeat the process.
The heart pumps the blood which carries the oxygen from lungs to the organs of the body (brain, heart, liver, skin, muscles, etc.) and returns the used up deoxygenated blood full of carbon dioxide back to the lungs. -----------------
When you breath in air (inhale) you are taking in oxygen as well. That oxygen goes into your lungs and into tiny air sacs called alveoli. Surrounding the alveoli are many capillaries full of deoxygenated (oxygen-poor) blood. The capillaries brought or circulated that blood from the cells after performing their activities and releasing waste products. The oxygen from the alveoli diffuses into the capillaries and the carbon dioxide waste product in the deoxygenated blood diffuses into the alveoli. Through exhaling you release the carbon dioxide that is now in the alveoli out into the outside air.
The cardiovascular and respiratory systems both provide oxygen to cells as well as removing carbon dioxidefrom cells.
4 ways to care for the circulatory system?
The best ways to keep your circulatory system healthy is pretty much the same things you do to keep all of the other systems in the body. Eat right, exercise, control stress, avoid too many toxins, and last but not least, one must maintain their spine. The reason for this is that it holds the spinal cord. Your nervous system is most important because it controls all the other body systems. The upper neck is often the most important because it's closest to the brain.
When does the human heart form in the human body?
it will take a babys heart 40 days or 6 weeks to develop it will go through a phase called looping. Then when the baby is born after its first breath the valves in vetro are closed and the ones used in life open. Since the baby is using its owns lungs now. The last valve should close about a week after birth, leaving the 4 other valves open.
Really early on one of the first things that is formed is the beginnings of its heart and circulatory system. Once it starts pumping the blood starts flowing.
What is a contraction phase of the heartbeat?
The cardiac cycle of the heart has two phases - the diastole phase and systole phase. In the systole phase, the ventricles contract and pump blood into the arteries.
Describe the path of blood flow through the heart?
Venous blood enters the heart through the superior and inferior venae cavae into the right atrium. From the atrium they exit the tricuspid valve into the right ventricular. The blood exits the right ventricle through the pulmonary valve into the pulmonary veins towards the lungs. Oxygenated blood returns through the pulmonary veins into the left atrium, Then, it enters the left ventricle through the mitral valve. From the left ventricle it passes through the aortic valve, and into the aorta.
How does the circulatory system and respiratory systems work together to keep the body functioning?
The heart pumps blood into the lungs where the blood is oxygenated. The blood is then returned to the heart and the newly oxygenated blood is circulated to the rest of the body.
The respiratory system performs a process known as gas exchange that releases carbon dioxide from the body and brings in oxygen. This occurs in the lungs and the circulatory system then transports the oxygen to tissues that used internal respiration to burn fuel in the form of ATP (adenosine triphosphate) for energy, thus creating more carbon dioxide.
The circulatory bring the oxygen that the lungs take in around the body and bring the carbon dioxide back for the lungs to expel. The lungs bring oxygen into the blood which feeds the heart and the rest of the body!
The respiratory system brings in oxygen, which the circulatory system (i.e. blood) carries around the body and delivers to the muscle tissue. When the oxygen is used up and carbon dioxide is produced, the circulatory system brings the CO2 back to the lungs, where the respiratory system disposes of it.
What are the effects of exercise on the circulatory system?
always after exercising, you will inhale and exhale ( breathe in and breathe out ) a lot faster than usual. this shows that you have a faster heart rate and that your blood pressure is rising, also shows that your body temperature is rising to.
How does preload affect the stroke volume?
Preload refers to the degree of stretch of cardiac muscle cells before contraction. These muscles exhibit a length-tension relationship. When the cardiac muscle cells are at rest, they are shorter than their optimal length. The most important factor affecting the stretching of cardiac muscles is the venous return, that is, the amount of blood returning back to the heart. Slow heartbeat and exercise can increase the venous return. This will lead to the stretching of the ventricles and it will hence increase the contraction force.
As reflected by the Frank-Starling Law, the stroke volume increases with the end diastolic volume. The greater filling volume will lead to the heart to stretch more and this will increase its force of contraction.
Which heart valve is open under pressure?
When the atria contract, there is increase in pressure in the atrial chambers. So both bicuspid and tricuspid valves opened up. When both the ventricles contract, both the bicuspid and tricuspid valves get closed. This opens up the aortic and pulmonary valves.
What structure in the heart distributes blood to body organs?
The Coronary arteries carry blood to the heart so the heart has its own supply of oxygen and nutrients to perform its function.
Relating to the force of blood going through the heart?
relating to the force if the blood going through the heart?
How would you describe the heart's ventricles?
The cardiac ventricles are the two lower chambers of the heart's four chambers. They are larger and more narrowed than the atria. They function by collecting the blood that flows into them from the atria and then contract in order to expel blood into the peripheral tissues, using major vessels to carry it to the extremities and lungs.
Is the main artery in your body?
The aorta is the main artery that takes blood from the heart to the body. The aorta drains the left atrium.
What is the function of a valve tendon in the heart?
The valves are attached to the heart wall by tendons as this allows the closure of the vavles to be controlled it also makes sure the the valve is completely closed to prevent backflow, which is potentially fatal.
OK i can only assume the question is reffering to the tendinae chordinae which connect the atrioventricular valves to the pappilary muscles projecting from the heart wall? The functions of these structures is to prevent the massive pressure difference, between the vetrivles and actria during systole, from pushing the the valve inside out and thus preventing backflow. NB the pappilary muscles and chordea tendinae are not involved in clossing or openinghte valves they just stop inversion.
Which electrolyte is important for the activity of the heart muscle?
There are four electrolytes that are important to heart function, potassium, calcium, sodium and magnesium. Calcium is important in the actual contraction of the heart.
Why are the two valves on the left side of the heart where there is high pressure?
It depends on the viewpoint of the observer ! Looking at the heart as if you're standing in front of the patient - the left ventricle and left atrium are on the right of the heart. If you're looking at the heart as if you're standing behind the patient - the chambers are correctly placed.
What does blood circulate that the body needs?
Blood circulates to provide nutrients and remove wastes in body tissues.
What does aerobic exercise do to the heart?
The heart is aerobic, and takes up a large amount of oxygen from the passing blood supply. Under anaerobic conditions, such as a blockage of one of the coronary arteries, the heart muscle which loses it's blood supply dies. This is a heart attack.
What part of the heart receives blood from left ventricle?
The walls of the left atrium contract to force blood through the mitral valve into the left ventricle.
What is the name for the inner lining of the heart?
The epicardium is the outer layer of the heart.
Epicardium
How does the brain heart lung work all together?
The heart and lungs work together to deliver oxygen to and remove carbon dioxide from the body's tissues. The brain uses this oxygen to function.
When alcohol is consumed, the heart function is increased and the ability of the heart to contract and move blood is increased
