D.) Immunity-Helps in protecting the body from diseases. E.) Cellular Communication- Aids in the distribution and delivery of hormones. F.) Thermoregulation- helps regulate heat that can either cool or warm the body. The Heart The heart is a muscular organ that rests behind the sternum. The heart pumps blood through a network of arteries and veins that makeup the cardiovascular system. (The Heart (Human Anatomy)
Name: Nikia Martinez Class: Biology 240L L3-1201 Assignment: Electrocardiography Lab Report Due: April 3rd 2012 Professor: Dr. B. Schoffstall Introduction In a normal human being the heart correctly functions by the blood first entering through the right atrium from the superior and inferior vena cava. This blood flow continues through the right atrioventricular valve into the right ventricle. The right ventricle contracts forcing the pulmonary valve to open leading blood flow through the pulmonary valve and into the pulmonary trunk. Blood is then distributed from the right and left pulmonary arteries to the lungs, where carbon dioxide is unloaded and oxygen is loaded into the blood. The blood is returned from the lungs to the left
Aim In this experiment, the external and internal structures of a sheep’s heart was examined and identified by dissection. To determine the functionality of a human heart since they are both mammals. Hypothesis Based on the external observation, the left side of the heart appeared bigger than the right side. When looking
The right atrium is where the process begins. Then, blood travels through the tricuspid valve to the right ventricle, and from there to the pulmonary artery. Once the blood travels through the pulmonary artery, it reaches the lungs. While in the lungs, the blood goes through a gas exchange: deoxygenated blood gets oxygenated (The gas exchange takes place in the alveoli, which are tiny air sacs in the bottom of the lungs
Cardiovascular System - Heart Attack From Case Studies for Understanding the Human Body S. Braude, D. Goran, and S. Maxfield Uncle Jake and Aunt Leah were playing golf last week. On the sixth hole, Jake told Leah that he was having unusual pain in his left arm and chest. All of a sudden he felt weak and complained that his shirt was much too tight. A dentist playing one hole behind them examined Jake and found he was short of breath, pale, and sweating. He called 911 on his cell phone and told Jake to lie down and wait for the ambulance. The paramedics rushed Jake to the hospital where he was evaluated by a cardiologist. The tests showed that he had four clogged arteries. He was scheduled for surgery the next day.
First the de-originated blood goes into the right atrium. And the originated blood goes through the left atrium. The right atrium then pumps blood through the tricuspid valve into the right ventricle, and the left atrium pumps blood through the bicuspid valve into the left ventricle. The right ventricle contracts,
Unit 2 Case Study For this myocardial infarction, the right coronary artery was blocked. The parts of the heart that were affected by this blockage was the right atrium, the right ventricle, the interventricular septum, the Sinoatrial node and the AV node, and some parts of the left atrium and ventricle.
→ deoxygenated blood (color blue) → oxygenated blood (color red) Blood flows from the tissues → superior and inferior vena cava → right atrium → tricuspid valve → right ventricle → pulmonary semilunar valve → pulmonary artery → lungs → pulmonary veins → left atrium → bicuspid (mitral) valve → left ventricle → aortic semilunar valve → aorta →body tissue.
Congestive Heart Failure can be caused by: Coronary Artery Disease: When the arteries become blocked or severely narrowed Heart Attack: Blockage of the coronary artery. Cardiomyopathy: Damage to the heart caused by infections, alcohol, or drugs. Overworking the Heart: When several diseases or conditions are present at once. In a normal heart blood would flow through the right atrium, to the right ventricle, to the lungs, back to the heart, into the left atrium, and into the left ventricle.
Today millions of Americans live or have lived with Atrial fibrillation. The main concern with this health issue is that many people who lived with it sometimes are not aware of it. Atrial fibrillation is defined by Mayo Clinic (2012) as “an irregular and often rapid heart rate that commonly causes poor blood flow to the body”. It occurs when the four chambers of the heart have a disrupted rhythm. The abnormal functionality of health may lead to a stroke because of the possible blood clot that will be formed. The Atrial fibrillation or Afib put the body in a situation without oxygen and nutrients because the body is not well supplied by a heart that is became weak. In general, only few people will feel change in their heartbeat. They may verbalize
The blood flow both the pulmonary and systemic circuits in humans The cardiovascular system is made up of two circulatory routes, the pulmonary circuit and the systematic circuit. The blood is oxygenated in the lungs during the pulmonary circuit and then the oxygenated blood is circulated through the rest of
What is POTS? Postural Orthostatic Tachycardia Syndrome (POTS) is a type of dysautonomia1 that affects numerous people around the world. When diagnosing POTS, a Tilt Table test is frequently used and the heart rate of the patient must increase by 30 beats per minute (bpm) or more, or be over 120 bpm, within the first 10 minutes of being placed in the vertical position from the supine position and with an absence of orthostatic hypotension2. Patients affected with POTS may have symptoms that range in severity. Although many POTS patients are able to continue with typical activities, some POTS patients are not able to. For others that are not able to fulfill a normal life, symptoms may be so severe that everyday activities such as bathing, eating, walking, or standing can be difficult or impossible. POTS patients have trouble changing positions because there is decreased blood flow to the brain. When there is decreased blood flow to the brain, it can cause severe dizziness and fainting (Garland). “Many people, who have POTS, experience presyncope. During presyncope episodes, symptoms are similar to a faint but no loss of consciousness is experienced” (Pots-). POTS patients can also have severe pain that is debilitating. Sometimes POTS patients will have other diseases or complications along with POTS that disables them.
Research Component Cardiomyopathy Many people have written songs and poems and television scripts about heartbreak, but very few know the science behind it. A simple internet search conducted by the heartbroken individual would tell them that what they’re feeling is not unique to them, but rather that they are part of a group of people suffering from an illness called cardiomyopathy. Quite a few people who fall under this category were placed there at the hands of an ex-lover. However, Willow Chance finds herself there at the hands of an inattentive driver who took away the lives of her adoptive parents in the blink of an eye.
Supraventricular Tachycardia The heart is a muscular pump about the size of a fist. This muscle is continuously pumping blood to the circulatory system at a rate on average of 100,000 times a day. Arrhythmia’s can cause an abnormal rhythm to this rate because of a change in the heart’s electrical system. These arrhythmias can either cause the heart to beat too slowly, bradycardia, or tachycardia, where the heart beats too fast. Supraventricular Tachycardia (SVT) is one specific form of tachycardia. When a person develops SVT it causes the heart tissue to develop activity similar to a pacemaker in the upper chambers, or the region above the ventricles (AHA, 2015). This produces an abnormally fast heartbeat. Understanding this condition is
The heart is one of the most important organs in an organism’s body, no matter if they are aquatic, amphibian, or a mammal. This super organ works automatically, able to pump massive amounts of oxygen rich blood through the body by means of electrical impulses and the opening and closing of valves within its many layers. It is what keeps us and every other creature on this earth alive; so it is only natural for one to fear when there might be a problem with one’s heart. A cardiac arrhythmia can happen to anyone, no matter the age, race, or gender, and as such, doctors and scientist have spent years trying to better understand the heart and the way it functions so that they can try to prevent these problems and save millions of lives.