LABORATORY REPORT (Click on the Save a Copy button on the panel above to save your report) Activity: Name: Instructor: Date: Effect of Exercise on Arterial Pressure and Vascular Resistance Abbie DeBerg Ms. Brantley May 30‚ 2012 Predictions 1. During exercise increase. 2. During exercise decrease. 3. During exercise increase. Materials and Methods 1. Dependent Variable HR‚ SV‚ BP 2. Independent Variable level of activity 3. Controlled Variables age‚ gender 4. Identify one variable
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Investigating arteries and veins Aim: How far the artery and vein can stretch when different masses are hanged from them. Hypothesis: I predict that the heavier the mass the more likely it is to stretch the artery and vein further‚ eventually causing it to break apart. In addition the vein will stretch further than the artery when given the same mass. This is because arteries are much larger‚ muscular and more elastic than the veins‚ as they carry high pressure blood. Veins do not transport
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Hydrochlorothiazide in mild to moderate hypertensive Nigerians and caused no electrolyte imbalance. This is because hibiscus has stronger diuretic properties than HCTZ. Acting as a natural angiotensin-converting enzyme (ACE) inhibitor‚ hibiscus dilates the arteries while also slowing the release of hormones that constrict blood vessels. This reduces the resistance to blood flow within the blood vessels. This study is a clear indicator of the positive effects of Hibiscus
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the heart is not able to pump enough oxygen and nutrition to meet the requirements of the body and it may be chronic or acute. Heart failure is caused by many disorders that injure the heart muscles including‚ heart attack‚ cardiomyopathy‚ coronary artery disease‚ and conditions that overwork the heart‚ such as high blood pressure‚ diabetes‚ thyroid problems and kidney problems. At the point when a heart starts to fail‚ it causes additional liquid to develop in the body‚ and is given swelling in the
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The mechanism of heart contraction and relaxation (mechanical restitution) is the basic of cardiac functioning. This mechanical restitution is driven by calcium movement and concentrations. An increase in cystolic calcium concentration causes contraction in myocardium. Calcium from the extracellular fluid enters the cardiomyocyte through the L-type Ca2+ channels after being propagated by the cardiac action potential which depolarises the cell. This flood of calcium triggers more calcium release
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Chapter 19- The Cardiovascular System: The Blood 1) Which of the following is NOT function of blood? A) transports nutrients‚ wastes and gases B) regulates pH C) defends against infection D) promote blood loss E) distribute heat 2) Which of the following is correct? A) A 100 lb (45 Kg) woman will have about 8 lb (3.6 Kg) of blood. B) Most adult humans have between 4 and 6 L of blood‚ depending on their size. C) Normal blood is less viscous than water and has a neutral pH. D) A and
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any site of injury‚ these platelets send out chemical signals to other platelets to pile onto the clot formed in a process known as aggregation. Having too many platelets can cause blood clots which may cause a heart attack‚ stroke or block a major artery. If you have too few or no platelets can be dangerous too because any slight injury can lead to serious blood loss. An example of platelet disorder is
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Extra Credit Assignment A: Terms 1 – 20 1.) Peripheral artery disease (PAD) is similar to coronary artery disease (CAD). PAD is a problem in the circulatory system where your arteries become narrow which leads to less blood flow to your limbs. PAD develops in your extremities‚ more commonly your legs‚ which can make walking become painful‚ also known as claudication. 2.) Aortic valve stenosis (AVS) is when the aortic valve‚ which is between the aorta and left ventricle of the heart‚ becomes narrow
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breathing (inhale vs. exhale)‚ and jolts of excitement such as being startled. Relating to the heart rate of an individual is their blood pressure which is regulated by baroreceptors in the body that are located throughout the aortic arch and carotid Arteries (2). The baroreceptors of the body act as essentially pressure sensors that and operate under negative feedback in order to maintain the arterial pressure (and thus blood pressure) of the body. For example‚ if a decrease in the arterial pressure
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A stroke is when the flow of oxygen-rich blood to a portion of the brain is blocked. Without oxygen‚ brain cells start to die after a few minutes. Sudden bleeding in the brain also can cause a stroke if it damages brain cells (What is a Stroke‚ 2016). Strokes or Cerebrovascular accidents (CVA) are the fourth leading cause of death in America‚ accounting for five percent of deaths killing over 128‚000 people per year (Kochanek‚ 2016). Over 20‚000 more women than men suffer from CVA (Alan‚ 2013) and
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