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Cardiovascular Health
Cardiovascular means anything of, relating to, or involving the heart and the blood vessels (arteries and veins) A healthy heart and circulatory system is vital to life. Ask questions here about how to keep the cardiovascular system pumping.
6,671 Questions
Baroreceptors are the control mechanisms that detect changes in blood pressure and help regulate it. When there is a rapid rise in blood pressure, baroreceptors signal the body to lower blood pressure by dilating blood vessels and reducing the heart rate.
The p wave corresponds to depolarization of the muscle fibers of the?
The P wave corresponds to atrial depolarization, specifically the spread of electrical impulses through the atria causing them to contract and pump blood into the ventricles. This is the first wave in an electrocardiogram (ECG) and represents the beginning of the cardiac cycle.
A drug that blocks the action of lipoprotein lipase would?
result in decreased breakdown of triglycerides in the bloodstream, leading to increased levels of triglycerides. This could potentially increase the risk of cardiovascular diseases like atherosclerosis and heart disease.
What substances are removed from the filtrate and reabsorbed by the capillaries?
Substances like glucose, amino acids, and ions are reabsorbed by capillaries in the kidney. Waste products like urea and creatinine are typically removed from the filtrate and excreted in urine.
The cardiovascular system transports oxygen and nutrients to cells for energy production and maintenance. It also carries waste products such as carbon dioxide and cellular byproducts away from cells for excretion and recycling.
How do you become blood sisters?
Being a blood brother(or sister I suppose) was an old tradition of confirming deep friendship by mixing blood. In its most typical form the persons would each cut their palm and then shake hands - but any similar ritual would do. With what we know about blood borne diseases today, this isn't really advisable any more.
What causes the accumulation of fluids in tissues and how does this fluid become lymph?
The accumulation of fluids in tissues, called edema, can be caused by factors such as inflammation, injury, or impaired circulation. This fluid can enter the lymphatic system through specialized lymphatic vessels, where it becomes lymph. Lymph is a clear fluid that contains waste products and immune cells, and it plays a crucial role in maintaining fluid balance and immunity in the body.
Angina pectoris, commonly referred to as just "angina", is chest pain caused by ischemia, or shortage of oxygenated blood supply, to the heart muscle. Unlike a heart attack, angina does not result in permanent damage to the heart muscle.
How much is a fatal electrical current?
Yes, electricity can kill you. It had been used semi-frequently when executing prisoners in the States that were on death row. Depending on factors involved it can cause life-threatening irregular heart rhythms which can lead to a fatality.
At higher amounts of voltage it can have other drastic effects on the body.
Blood does not produce anything. Red blood cells and white blood cells are produced in the marrow of bones. Blood then supplies oxygen and hormones to the body to insure the body works properly. Blood cells are bathed in plasma.
Describe How the clotting of blood occurs?
Blood contain a special type of protein called fibrinogen. It is a fibrous protein and is insoluble in aqueous medium. They are non-crystalline and are elastic in nature.
This type of protein helps in blood clotting due to its elastic nature.
What is the difference between septate and coenocytic hyphae?
The main difference between septate and coenicytic fungi is that they posses divisions or septa on their hyphae. Are invaginations of the same material that composes the cell wall, usually chitin, these septa have small pores in them that allow the inter exchange of materials like ribosomes and even nuclei between cells, when the hypha is damaged septum pores are closed, localizing damage, saving the rest of the hypha from further damage. While hypae on coenicytic fungi don have any septa, so the whole hypha is a single cell, when damaged the hypha will try to recover, but if the damage is large enough the hypha will die. This is a clear advantage of septate over non-septate fungi. Most Phylums on the Kingdom Mycota are septate. Fungus-like organisms posses coenicytic hyphae.
Cardiovascular disease risk is greatest for people who tend to store body fat in the?
Abdomen.
The male "beer belly" pattern of fat storage around the abdominal organs is more associated with heart disease than the female pattern of storing it around the hips and buttocks.
Which cells are active in the blood clotting process?
Platelets and various clotting factors, such as fibrinogen and prothrombin, are active in the blood clotting process. Platelets adhere to the site of injury to form a plug, while clotting factors work together in a cascade to form a stable blood clot.
What happens during p wave of an ECG recording?
The P Wave on and ECG shows depolarization of the Atria, and the characteristics should be smooth, round, no more than 2.5 mm in height, no more than .11 seconds in duration, and positive in leads I,II, aVF, and V2 through V6.
How do white blood cells protect us from diseases?
The functions of While Blood Cells are:-1.Defend against bacterial and fungal infections.
2.Defend against parasitic infections(if it were not present it'd have been very problematic to stay alive with mosquitoes.
3Well.It also take care of allergic responses.
4.Provide immunity as well.
5.Act as the clean up crew.
Is a clams circulation open or closed?
Clams have an open circulatory system. Their blood is pumped by a heart into large sinuses through which it bathes the organs directly before being returned to the heart.
Which system regulates chemical activity in the body?
The endocrine system regulates chemical activity in the body through the release of hormones. These hormones travel through the bloodstream and act on target cells to regulate various physiological processes such as metabolism, growth, and reproduction.
Current is correct. Current is the flow of electrons, and it is this flow that is disruptive to the human body.
Another term for voltage is "potential," which is helpful to remember. Voltage is the measure of potential for current to flow. If the potential is small, the current will not flow so much, all other things being equal. By the same token, a large potential can create a large flow. This is why "high voltage" is considered dangerous -- it represents a large potential for current to flow. For current to flow, however, a circuit must be created to make a path for the electrons. If you make yourself part of this circuit, ZAP!
The amount of current that flows in a circuit is proportional to the potential, and inversely proportional to the resistance of the circuit:
Current = Potential / Resistance (often written I = V / R )
A useful analogy is to think of water (electrons) in a pipe (circuit). When the faucet is shut (like a switch in the "off" position), no water flows (current). But there is potential for water to flow because pressure (voltage) is exerted on one side. If you were a tiny person in the pipe (in a pressure suit with a breathing apparatus!) nothing bad would happen. The fact that there is pressure in the pipe means nothing when there is no water flowing. Now, open the faucet and let the current flow. The flow rate is greater when the upstream pressure is higher, but it is limited by the shape and size (resistance) of the pipe. If you were still hanging around inside the pipe, you would feel the effect of the water flowing by you. If this flow is very large, you could be torn apart. That is the analogy of being electrocuted.
Manvith Says:
Actually, voltage is the electric potential, or potential energy for each electron, not potential energy. Current is rate at which the electrons flow. In order to see what effect it would have on a person, think of it like this: if you have high current and low voltage, then the electrons would not have that much energy, but there would be a lot of them flowing into your body because the current is high. But, if the voltage is high and the current is low, then the electrons would carry more energy, but there would not be many of them flowing into your body because the current is low. Looking at it this way, current and voltage should be equally deadly, but in real life current is more life-threatening. This is because your heart uses electrical impulses to control how fast your heart beats and if you get a few high voltage electrons, it won't really do much to your heart beat, but getting a lot of them at low voltages would.
Vignesh Says
Current is Directly proportional to Voltage & vice versa
Shock depends on the resistance of the body.
If the voltage is 1000V and your body have infinity resistance(current=voltage/Resistance(infinity)=zero - no current flow in the body), it wont affect you.
If the voltage is 1V and your body have 0.001 OHM resistance (current=voltage/Resistance(0.001)=1000 amps current flow in the body), it will affect you.(Think.. why coin cell battery having very low voltage will shock your tongue, becoz tongue has very low resistance)
Edit: I did not intend to erase previous answers. My apologies as I misunderstood the nature of the editing tool.
CommentVoltage is not another term for potential. Voltage is another term for potential difference!
The path of blood flow within the systemic vascular system?
superior vena cava,right atrium,tricuspid valve,right ventricle,pulmonary valve,pulmonary artery,pulmonary veins,left atrium,bicuspid valve,left ventricle,aortic valve,aorta,pulmonary cappillaries,pulmonary trunk
Anemia is caused by low iron and low blood levels. The iron in your blood allows oxygen to bind to your red blood cells to transport it to the cells of your body. If you are lacking iron and red blood cells, your body has less transporters to take oxygen to your cells, including your brain cells. This can cause you to feel dizzy because your brain isn't getting as much oxygen as it needs to be.
If you are anemic and feeling dizzy, please see your doctor. Your oxygen levels could be low and you may need to start a treatment regimen to raise your iron and blood levels.
What does possible anterior infarct age undetermined on ECG analysis mean?
Most ECG machines are designed to pick up certain abnormalities in the tracing, they will therefore give suggestions of what could be wrong.
Possible anterior infarct means that there is possible cell death in the front (anterior) part of the heart.
BUT these automatic analysis are very unreliable and just a bit of movement can lead it to saying possible heart attack on a perfectly normal ECG. Therefore, always ask a professional who is trained in reading ECGs for the diagnosis - don't rely on the machine.
age undetermined just means whoever did the ECG did not enter the patient's age into the machine before taking the ecg.
What are facts about red blood cells?
A few interesting facts about red blood cells: They only make up about 45% of the entire blood volume, the technical name for them is erythrocytes, they make up the largest amount of formed elements in the blood, the lack of a sufficient amount of red blood cells can lead to death within minutes due to lack of the oxygen that they carry, a red blood cell's structure is round with a raised rim and a sunken center, they have little internal structure (organelles) and the lifespan of a single RBC is around 120 days.
What type of fat deposition increase risk for cardiovascular disease?
Abdominal deposits (beer belly) are the highest risk, and seem to be hereditary. However, any degree of obesity puts a person at high risk, regardless of where the weight is deposited. See below.
Name four categories of cardiac disease?
four categories of diseases are physiological,pathogenic/infectious,heriditary/genetic and nutritional/deficiency........this is what my teacher told me!!!!
