Cardiovascular Health

The normal time of ventricular contraction depends on the heart rate. The QT segment represents the ventricular contraction on an ECG exam. The corrected QT segment is 0.45 seconds for men and 0.46 seconds for women.

1. Sit person down (on the floor preferably, with feet flat, knees raised pointing towards the ceiling and back against a wall or other hard surface). Make sure he/she is comfortable (note: pain will not go away unless the person is suffering an Angina attack). 2. Call for ambulance. Important Things to remember: * Never leave a person who is having a heart attack alone. * Never try and do any First Aid (except the 2 steps above) unless you are trained and/or qualified. * Do not panic! * If a 'scene' is not safe (eg. there is fire in the room) do NOT enter! * If possible try and keep talking to the casualty as this may help to reassure or calm him. This also lets you know that he is still conscious. By doing the 2 steps above it MAY comfort the causualty because he/she will know that you are there and you are taking care of the person. Hoped this helped:-)

no it does not an acerola has the most vitamin C it is said that babies cannot drink orange juice so they gave them apple juice and put a drop of acerola juice in it and that provided them with 500% daily value of vitamin C

Hypokalemia is proarrhythmic because it decreases K+ conductance through voltage-gated channels, decreasing the hyperpolarization effect of the ion during the repolarization phase in cardiac tissue. As the membrane potential remains "partly depolarized" it promotes automaticity. Hypokalemia, which may be caused by chronic use of thiazide-diuretics, produce a characteristic U wave in the ECG.

Conversely, hyperkalemia may also cause arrhythmias, in this case it would be due to increased conductance through voltage-gated K+ channels, thus decreasing the action potential duration/effective refractory period, thereby allowing reception for a action potential. Hyperkalemia also decreases outflow of K+ ion through ungated-channels, thus again keeping the tissue at more depolarized stage and promoting automaticity.

Yes. Deoxygenated blood (venous blood) can mix with arterial blood in a few different manners: the thebesian circulation perfuses the left ventricle and then empties with the oxygenated (arterial blood); blood that supplies pulmonary tissue with oxygen empties into pulmonary veins (which carry newly oxygenated blood); atelectatic or collapsed alveoli; other congenital problems (septal defects).

Cells in the blood do not provide nutrients to the other cells of the body. The nutrients are in the blood plasma (liquid). These nutrient diffuse through the vessel wall and travel to the bodies cells in the interstitial fluid (the fluid around individual cells). The epidermis does not have blood vessel running through it, so the nutrient must pass from the dermis layer of cells.

White blood cells are important because they help fight infections and defend the body against foreign invaders like viruses, bacteria, and fungi. They play a crucial role in the immune system by identifying and destroying harmful pathogens to maintain overall health.

White blood cells are found throughout the body, primarily in the bloodstream and within lymphatic tissues such as the spleen, thymus, and lymph nodes. They also circulate in tissues to help fight infections and foreign invaders.

About 30 trillion in a healthy average human body.

To geta better answer, Google American Heart Association articles from January 2008 and after, with Dr. Wang, Harvard researcher, who stated that smooth muscle contains Vitamin D receptors. Offhand, most likely because Vitamin D enables calcium uptake in the body and calcium is needed in proper amounts for muscle/nerve coordination (proper calcium/sodium/magnesium balance).

The muscular system works with the skeletal system and is responsible for movement of the body and things in the body. Another thing it does is generated heat to keep us warm, plus, it helps circulate blood and lymph. Those are just some of the reasons that exercise is so good for you.

None. Nerves are not part of the circulatory system. They receive nutrients and oxygen from the circulation like any other part of the body, but there is no blood that "flows from the nerves". Tracy Morton MD

Exercising before would be more beneficial for increasing your clothespin-squeezing rate. Exercise helps increase blood flow and muscle activation, which can enhance your grip strength and overall squeezing ability. Resting before may not prepare your muscles as effectively.

Transmural perfusion pressure represents the amount of pressure in the coronary arteries that supply the layers of the heart muscle (the TRANSMURAL part). The formula is: Aortic diastolic pressure - LVEDP (L Ventricle End Diastolic Pressure). Keep in mind the coronaries ONLY receive blood during diastole because of the twisting forces applied on the heart during systole.

On average, around 2.4 million red blood cells are produced per second in the human body. Red blood cells typically circulate for about 120 days before being destroyed in the spleen or liver. The exact number of blood cells destroyed per second can vary based on individual factors like health and diet.

The normal glomerular filtration rate (GFR) is about 125 mL/min, which translates to approximately 180 liters per day. This means that the kidneys filter all of the body's blood about 60 times in a day.

If you mean the throat infection by angina, in English it is called Strep Thoat.

Angina is a pain or discomfort in the chest that is often felt has a squeezing or pressure-like feeling. This discomfort can also be felt in the shoulders, arms, neck, jaws, or back. Anginal pain usually lasts for no more than 2-10 minutes. It is relieved by rest or nitroglycerin. It is commonly found in the chest area. Angina is usually a sign of coronary artery disease(CAD). It occurs when the blood vessels leading to the heart are blocked. The blockage decreases the blood and oxygen flow to the heart muscle. When the heart muscle is deprived of oxygen you will feel chest pain and other symptoms.

A high white blood cell count could be caused by some medicine that you are taking. But for most cases, it indicates that your body is fighting off infection. Therefore, it depends on why you have a high count.

The cardiovascular center is located in the medulla oblongata of the brainstem. It is responsible for regulating heart rate, blood pressure, and blood flow to different parts of the body.

The oxygen diffuses into the bloodplasma in the capillaries in the lung, from there it diffuses into the erythrocytes (red blood cells, RBC's) and from there it gets bound to Hemoglobin (haemoglobin).

The diffusion of oxygen can take place because the oxygenconcentration in the bloodplasma is very low (and the same goes vor the erythrocytes). Because of the diffusion eventually the concentration in the air in the alveoli, the bloodplasma and the erythrocytes would become equal and the diffusion would stop. This is where the hemoglobin comes into play, by binding oxygen hemoglobin lowers the concentration of oxygen in the erythrocyte, because of this oxygen from the bloodplasma will diffuse into the erythrocyte thus lowering the concentration in the plasma thus causing more oxygen from the alveoli to diffuse into the bloodplasma. This cycle goes on until the haemoglobin in the erythrocytes if fully saturated, or the blood leaves the lungcapillaries.

Note: bloodplasma, h(a)emoglobin and maybe some other words might not be spelled correctly (but I'm sure they'll sound familliar and you'll know the correct spelling), I'm sorry...

The basic body plan of a fungus consists of a network of thread-like structures called hyphae. Septate hyphae have cross walls (septa) that divide the hyphae into distinct cells, while coenocytic hyphae lack these septa, resulting in a continuous multinucleate cytoplasmic mass. Septate hyphae allow for compartmentalization of the cytoplasm and are found in most fungal species, whereas coenocytic hyphae are characteristic of certain groups like Zygomycetes.

Angina is a common condition that affects about 10 million people in the United States. It is more prevalent in older adults and those with risk factors such as high blood pressure, high cholesterol, diabetes, and smoking. The exact prevalence varies by region and population demographics.

A trained athlete has a better lung capacity because their lungs become more efficient at taking in oxygen and eliminating carbon dioxide through regular exercise and conditioning. This leads to stronger respiratory muscles and improved oxygen utilization by the body, allowing the athlete to breathe more effectively during physical activity.