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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 are the four materials transported by the circulatory system?
circulatory system transport
- oxygen form lungs to body cells & carbon dioxide from body cell to lungs.
- digested food from intestine to various cells(ofcourse i am refering in form of glucose ,vitamines etc)
- liquid waste (urea), to kidneys for excretion.
-platelets to site of injury for stopping blood flow
-various harmone (like adneralin ) to different parts of body as and when required.
Which component of the blood carries oxygen?
Hemoglobin molecules on the surface of the red blood cells.
How gas exchange when the circulatory and respiratory systems work together?
Your respiratory system draws in air, which is vital to life. However, the circulatory system gets the air to where it needs to go.
A respiratory system is used to draw oxygen into the lungs. The circulatory system, however, sends the oxygen to where it needs to go.
Transports Oxygen, minerals and proteins to the cells and organs that require them in order to respire and remove wastes generated by respiration such as carbon dioxide, lactic acid in the case of muscles etc.
How would the circulatory system get involved if you had a puncture from a dirty rusty fence nail?
the blood will clot together which is called platelets
What body system does the circulatory system interact with?
Pulmonary Circuit (pul´mo-ner"e):
Formed by the blood vessels, the pulmonary circuit sends deoxygenated blood to the lungs to pick up oxygen and unload carbon dioxide.
Systemic Circuit (sis-tem´ik):
This circuit sends oxygen-rich blood and nutrients to all body cells and removes wastes.
Source:
Hole's Human Anatomy & Physiology. Twelfth Edition. David Shier, Jackie Butler, and Ricki Lewis. Mc Graw Hill - Higher Education. Page 553.
What vessel does blood that is entering the right atrium of the heart come from?
The blood enters through the superior and inferior vena cava.
The role of teeth in digestion?
The teeth are responsible for mechanical digestion. Food is broken down and crushed into smaller pieces so as to increase the surface area. This allows digestive chemicals to break down and access the complex substances easier.
What parts of your body make up the respiratory system?
The respiratory system contains the following:
nose, pharynx, larynx, trachea, bronchial tubes, lungs, capillaries and mouth.
in order:
-noes
-mouth
-pharynx
-epiglottis
-larynx
-tranchea
-bronchi
-aveoli
-lungs
-capillaries
p.s- don't worry this imfomation is from the book ( text book)
your lungs and air tube
What is the task of white blood cells?
White blood cells (WBCs), or leukocytes, are a part of the immune system and help our bodies fight infection. They circulate in the blood so that they can be transported to an area where an infection has developed. In a normal adult body there are 4,000 to 10,000 (average 7,000) WBCs per microliter of blood. When the number of WBCs in your blood increases, this is a sign of an infection somewhere in your body.
Here are the six main types of WBCs and the average percentage of each type in the blood:
- Neutrophils - 58 percent
- Eosinophils - 2 percent
- Basophils - 1 percent
- Bands - 3 percent
- Monocytes - 4 percent
- Lymphocytes - 4 percent
Most WBCs (neutrophils, eosinophils, basophils and monocytes) are formed in the bone marrow. Neutrophils, eosinophils and basophils are also called granulocytes because they have granules in their cells that contain digestive enzymes. Basophils have purple granules, eosinophils have orange-red granules and neutrophils have a faint blue-pink color. When a granulocyteis released into the blood, it stays there for an average of four to eight hours and then goes into the tissues of the body, where it lasts for an average of four to five days. During a severe infection, these times are often shorter.
Neutrophils are the one of the body's main defenses against bacteria. They kill bacteria by actually ingesting them (this is called phagocytosis). Neutrophils can phagocytize five to 20 bacteria in their lifetime. Neutrophils have a multi-lobed, segmented or polymorphonuclear nucleus and so are also called PMNs, polys or segs. Bands are immature neutrophils that are seen in the blood. When a bacterial infection is present, an increase of neutrophils and bands are seen.
Eosinophils kill parasites and have a role in allergic reactions.
Basophils are not well understood, but they function in allergic reactions. They release histamine (which causes blood vessels to leak and attracts WBCs) and heparin (which prevents clotting in the infected area so that the WBCs can reach the bacteria).
Monocytes enter the tissue, where they become larger and turn into macrophages. There they can phagocytize bacteria (up to 100 in their lifetime) throughout the body. These cells also destroy old, damaged and dead cells in the body. Macrophages are found in the liver, spleen, lungs, lymph nodes, skin and intestine. The system of macrophages scattered throughout the body is called the reticuloendothelial system. Monocytes stay in the blood for an average of 10 to 20 hours and then go into the tissues, where they become tissue macrophages and can live for months to years.
Neutrophils and monocytes use several mechanisms to get to and kill invading organisms. They can squeeze through openings in blood vessels by a process called diapedesis. They move around using ameboid motion. They are attracted to certain chemicals produced by the immune system or by bacteria and migrate toward areas of higher concentrations of these chemicals. This is called chemotaxis. They kill bacteria by a process called phagocytosis, in which they completely surround the bacteria and digest them with digestive enzymes.
How do adhesion and cohesion explain capillary action?
Surface tension is related to the cohesive properties of water. Capillary action however, is related to the adhesive properties of water. You can see capillary action 'in action' by placing a straw into a glass of water. The water 'climbs' up the straw. What is happening is that the water molecules are attracted to the straw molecules. When one water molecule moves closer to a the straw molecules the other water molecules (which are cohesively attracted to that water molecule) also move up into the straw. Capillary action is limited by gravity and the size of the straw. The thinner the straw or tube the higher up capillary action will pull the water.
What are four ways to prevent circulatory systems disorders?
- Do not smoke or use any other types of nicotine sources. Smoking is perhaps the most potent cause of circulatory problems. - Have some exercises at least every second day that make your heart work harder. Jogging, cycling, playing ball, swimming or other activities where you increase your energy consume are good for your blood circulation. The exercises should however be adjusted to your present health condition.- Get enough sleep each 24 hours. All the sleep does not however need to occur during night. You can for example take out some of your need for sleep as a siesta in the middle of the day. 7 hours sleep seems to be the ideal for optimal circulatory health. Much more sleep seems to be bad for your blood circulation.- Avoid a high amount of stress over a longer period. If there is something in your lifestyle or work that makes you stressed, you should make adjustments. Meditation is a good method to stress down. - Decrease the amount of fat in your diet. Do not add much oil, butter or other types of fat to your food. Do not consume much fast-food or ready made food that often contain great amount of added fat. -Avoid altogether chemically altered fat, so-called trans-fat. This type of fat is often found in margarine and is often added to many types of cookies. -Avoid great amounts of saturated fat, as found in fat milk, fat diary products, coconut products and butter. - Still you need some fat. The fat you mostly need are mono-unsaturated fat as found in olives, olive oil, rape oil, canola oil and almonds, omga-3-polyunsaturated fat found for example in fish, seafood and flax oil and omga-6-polyunsatyrated found in sunflower oil, soy oil, corn oil, sunflower seeds and many types of nuts. - Much of the fat you still choose to add to your food should be oils with mono-unsaturated fat like olive oil, rape oil, almond oil or canola oil. Marine oils or flax oil can be added to get enough omega-3-fat. You can also use some soy oil, corn oils and other types of natural oils with a high content of omega-6-fat, but do not use too much of these to avoid over-consuming this type of fat. - Eat some nuts, almonds or sunflower seeds several times each week, since these food types give you fat valuable for your circulatory health. - Eat fish at least every second day. Use lean meat, lean poultry, mushrooms, seafood and lean diary products in the food you make. - Consume a moderate amount of carbohydrates. Avoid adding great amounts of sugar to your food. Avoid consuming much sweet drinks, cookies and snacks with great amounts of sugar and other carbohydrates. - Use carbohydrate sources that contain fibre and that let the carbohydrates be taken up over some time, for example full corn bread and cereals, beans, peas and fresh fruit. - Eat vegetables and fruit to each meal in order to get enough vitamins, minerals, fibres and anti-oxidants. They should be raw or only gently cooked so that the content of nutrients is not washed out. - A moderate alcohol consume is good for your blood circulation, especially red wine, but over-drinking has the opposite effect. - Avoid excessive eating. Eating too much is not good for your blood circulation even though you eat sound food. - Reduce excessive weight. The advices depicted above will often over time normalize your weight. If this is not enough you should carry through a more specific weight reduction program. - If you suffer from diabetes, this disease should be well controlled. - Extra supplements of vitamins, minerals, essential fatty acids and anti-oxidants may be useful. Also some herbal supplements containing adaptogenic factors can be useful, for example supplements based on ginseng or roseroot (Rhodiola rocea). Supplements are especially useful if it is difficult to achieve a wholly satisfactory diet, or you have extra stressful conditions in your life you cannot avoid.
Why is it important to have a strong immune system?
Immunity is being able to resist a certain disease through preventing develoment of a pathogenic microoranism or by counteracting the effect of it's products.
What is the path of blood through the body?
Blood leaves the left side of the heart and travels through arteries, which gradually divide into capillaries. In the capillaries, food and oxygen are released to the body cells, and carbon dioxide and other waste products are returned to the bloodstream.
What vessels that carry blood from aorta to kidneys?
The abdominal aorta carries blood from the heart to the kidneys.
How is the circulatory system adapted to prevent blood loss and infection?
The essence of the circulatory system is what it carries - the blood. Blood consists of cells and plasma. Plasma is mostly water, but also carries nutrients and waste to and from the tissues of the body and hormones among tissues. The cells include red blood cells, which carry oxygen, and white blood cells, which aid in immunity and protective functions. Platelets are also found in the blood and are responsible for healing responses when blood leaks from a vessel, effectively clotting the break to prevent blood loss.
What is the difference between double circulation and single circulation?
Single circulation
1. Occurrence: Found in only fishes.
2. Mode of circulation: Blood passes only once through the heart to supply once to the body.
3. Nature of blood: Only venous blood passes through the heart.
4. Efficiency: Less efficient as gill capillaries slow down the blood flow so the body receives blood at a low pressure which decreases the rate of oxygen supply to the cells.
Double circulation
1. Occurrence: Found in amphibians, reptiles, birds and mammals.
2. Mode of circulation: Blood passes twice through the heart to supply once to the body.
3. Nature of blood: Mixed or oxygenated or venous blood passes through heart.
4. Efficiency: More efficient as blood flows at higher pressure, especially in birds and mammals, which increases the rate of food and oxygen supply to the cell and also rapid removal of wastes from them.
What drugs affect your body in the circulatory system?
What similarities are there between a fish and human heart?
The frog heart differs from the mammalian heart anatomically in that they are three chambered rather than four chambered. The pacemaker in the amphibian heart is the sinus venosus, a thin-walled sac that receives blood from the anterior and posterior caval veins and empties blood into the right atrium. The single ventricle receives blood from both atria and pumps blood out through the large artery called the truncus arteriosus (Figure 1). In contrast, the mammalian ventricle has separate left and right chambers, which prevent mixing of the venous and arterial blood.
How does the circulatory system work with the respiratory system in the sequence for respiration?
The Respitory system gets oxygen into the Circulatory system that takes the Oxygen, through the blood stream, to other parts of the body
What is the inside of blood vessels lined with?
A thin, single-celled, layer of squamous endothelial tissue overlapped inside by an interlacing network of other cell tissue. There are two more layers on top of this inner layer.
What funnctions does the circulatory syatem play in the body?
To transfer oxygen and blood around the body.
Why do you need a strong respiratory system?
You need a respiratory system to bring oxygen into your body and to remove carbon dioxide from your body..
