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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 type of waste does not enter the body's circulatory system?
The undigested waste products does not enter your body cavity. That is called as faecal matter. Scientifically speaking the food you eat is not "Inside" your body cavity. It is always "Outside" the body cavity. You go for extracellular type of digestion. I found it very difficult to teach the same in my dental college class.
The lungs can be associated with what part of the circulatory system?
Pulmonary circulation through the blood vessels and capillaries.
What is the component of mammals circulatory system?
The main component is the Heart which pumps the blood throughout the body. This blood is carried to various parts of the body by Arteries and Veins.
What vessels are known as exchange vessels?
Capillaries are known as exchange vessels. Capillaries are the smallest of vessels and allow nutrients and waste to pass through blood and body.
What are some questions about the cardiovascular system?
1. What is the anatomy of the cardiovascular system?
2. What are the causes of coronary artery disease?
3. Is cigarette smoking a really big risk factor for heart disease?
The lacrimal puncta/canaliculi/sac & hasolacrimal duct in the eye & accessory structures secrete and contain lysozyme which is an antibacterial enzyme(naturally occurring in tears). due to its acidity its responsible for killing some bacteria.
How does the circulatory system function?
The circulatory system is the system running through out the body, carrying nutrients and oxygen to all cells of the body. It consists of the heart and the blood vessels. The exchange and transfer of material takes through the blood. The arteries carry blood away from the heart and the veins carry it back to the heart.
How many beats of the heart to get blood to the brain?
Each beat of the heart pushes blood to the brain. It takes about a minute, or 70 beats to move it throughout your body.
Which systems work together to provide the bodys cells with oxygen?
The circulatory system and respiratory system work together to provide the body's cells with oxygen and to carry away the carbon dioxide that cells generate as respiratory waste. The respiratory system gets air into lungs and in the small air sacs were oxygen is transported into the blood, and the circulatory system carries the oxygen in the red blood cells and delivers it to cells in need of oxygen. The oxygen is stored in the hemoglobin in the blood, and the blood is pumped around the bodily organs by the heart, releasing oxygen at the organs.
What support does the digestive system provide for cells?
Cells get a lot of energy from food. But the food you eat is not needed by cells.
What happens to the blood inside the pulmonary capillaries?
Gasses are exchanged (CO2 is lost & O2 is gained).
What is the different of neuron to an odinary cells?
A neuron is a fundamental cell of the nervous tissue which receives and maufactures information and generates and transmits responses and cells are composed of several different compounds (water, carbohydrates, proteins etc.) which combine to forma cell. In conclusion, a neuron basically belongs to the nervous tissue while ordinary cells generally belong to the blood tissue.
Do all lymph pass through at least one node before it is returned to the blood stream?
The lymph nodes are all over the body and each area or region is drained by its group of lymph nodes. They do not pass through one node but they drain in the thoracic duct which ultimately opens and drains in the large veins of the neck on the left side
Where would pressure be caused by stenosis of the mitral valve?
There will be higher pressure in the left atrium, when there is mitral stenosis. There will dilatation of the left atrium as well as there will hypertrophy of the left atrium. There will raise in the pulmonary veins. This will lead to pulmonary edema. This will eventually lead to high pressure in pulmonary arteries. That is called as pulmonary hypertension. The pressure in right ventricle will increase. Then the pressure in the right atrium will increase. Then the pressure in the systemic venous side will increase. This will lead to right sided heart failure.
Why does blood pressure in aorta decrease further form heart?
As the blood moves through the aorta, the friction of the walls of the aorta decreases velocity. This velocity decrease results in a decrease in pressure.
How does the circulatory system keep your body in balance?
Your circulatory system is so important! It consists of your blood, blood vessels, and heart. Your heart brings blood to your heart through your veins, and when it gets to your heart, it goes through your right atrium, through your right ventricle, into your lungs through your arteries, back into your heart through veins, into your left atrium, through your left ventricle, and goes through your biggest artery, the aorta, and then other arteries to go to every cell in your body. You have 3 types of blood vessels; veins, capillaries, and arteries. Veins take blood toward the heart, arteries take blood away from the heart, and capillaries let blood kind of travel wherever, and collects oxygen from the air sacs, which are covered in capillaries. The digestive, respiratory, and urinary systems all connect with the circulatory system, mostly by having blood carry things such as oxygen and carbon dioxide throughout the body Hope this helps!
Why do we represent blood using the colors red and blue?
Blood is actually the color red, so blood is represented by the color red because it is red. It is sometimes represented by blue to represent deoxygenated blood, which is actually dark red as opposed to the bright red of oxgyenated blood. This is purely for visual purposes so those learning about the circulatory system can see clearly where there is oxygenated blood and where there is deoxygenated blood. The myth that human blood is blue is not true, but the blood of a horseshoe crab is actually the color blue.
The blood moves in a lateral direction to the distal right thumb. Then the blood comes back in a proximal direction toward the medial body, where the heart is located.
How fast must a heart beat for it to be lethal?
Generally, the most basic formula for calculating the maximum heart rate that is considered safe is:
220 - your age.
Your heart rate will naturally increase to that level as a reaction to a lot of things: like exercise, blood pressure drops and adrenaline surges. It is called sinus tachycardia.
That's the short answer. If you want more info, the long answer is to come ;)
The formula has at least 50 variations, any of them can only give a rough estimate, based on age alone. There are many other factors to be considered alongside this. The most reliable method of finding the maximum heart rate is through a Cardiac Stress Test, which is basically just running on a treadmill while hooked up to an ECG and occasionally increasing the speed and slope. The real maximum heart rate depends on your age, size, weight, fitness and a little genetic randomness.
Here's the kicker though: there's a lot of different types of fast heart rate, which is medically referred to as "tachycardia". It's almost never fast heart beat that causes death; your body often increases it's heart rate as a reaction to some other kind of stimulus, but if it continues for a while then the heart's increased workload and demand for oxygen can cause ischemia. It can also degrade into become arrhythmic (irregular beat) if the underlying problem is not solved - arrhythmia will definitely kill you. Then of course, there is always the possibility of full blown cardiac arrest.
Hope this helped you
