The focus of the investigation explored the fundamental properties of cardiac muscle on a cane toad’s (Bufo marinus) heart and the adaptive ability of the heart to produce a response when subject to different conditions of temperature‚ stretch on contractile force‚ substances of acetylcholine‚ adrenaline and atropine‚ and increased frequency of stimulus. Regarding Figure 1‚ the regular heartbeat and contraction force of the toad was identified to demonstrate the difference between atrial contractions
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presents the care to a patient during one shift in the Intensive Care Unit (ICU). Tony*‚ a 79 year old‚was admitted to ICU with suspected anoxic brain injury;post Out of Hospital Cardiac Arrest; and Head Injury. Cardiopulmonary Resuscitation was initiated by his son. When the EMTambulance arrived Tony was pulseless‚ cardiac monitoring showed Ventricular fibrillation – he was cardioverted twice at the scene. Inthe Emergency Department (ED) he developed Ventricular tachycardia and required a further
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cause a rapid conduction and its providing a very strong contraction to the ventricular muscle. The intercalated discs are a network that allows the rapid transmission of the electrical impulses and this allows the action potentials to travel to one cardiac muscle cells to the next. Sympathetic Nervous System carry the nerve impulses from the brain (medulla oblongata) to the heart and it releases hormones (that increases the heart rate). Parasympathetic Nervous System also releases hormones that slow
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and teeth‚ it has an essential role in many body metabolic functions and processes. Calcium is not only used in the structure of bones and teeth‚ but it is required in many other body functions including‚ but not limited to‚ cardiac action potentials‚ the contraction of cardiac‚ skeletal and smooth muscle‚ blood clotting‚ and the transmission of neural impulses (Edwards‚ 58). Calcium ions are necessary in the process of muscle contraction. When muscles contract‚ the constituent fibers shorten. The
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Cardiovascular system | Located in main arteries of heart | Blockage of passage of blood into coronary arteries | Arthrosclerosis blockage of coronary artery/ MI heart attack/ | CL | Giesma | Http://www.enome.gov/images | Size: 215x200 pixels | | 3 | Cardiac Muscle | Cardiovascular system | Heart/ smooth muscle | Contraction and relaxation of muscle for blood flow | Congestive heart failure | DM | Wrights | http://swc2.hccs.edu/bio/labs | 500x376 pixels | | 4 | Cystic Duct | Digestive system
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skeletal‚ smooth and cardiac muscles. It permits movement of the body‚ maintains posture‚ and circulates blood throughout the body Muscles provide strength‚ balance‚ movement and heat for the body to keep warm There are three distinct types of muscles: skeletal muscles‚ cardiac or heart muscles‚ and smooth (non-striated) muscles Skeletal muscle is a form of striated muscle tissue existing throughout the human body‚ and which is under control of the somatic nervous system; Cardiac muscle (heart muscle)
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tissue. * Skeletal muscle tissue. * Cardiac (heart) muscle tissue. Types of Muscle Tissue Cardiac (Heart) Muscle Tissue is so named because it is found in the heart. Cells are joined to one another by intercalated discs which allow the synchronization of the heart beat. Cardiac muscle is branched‚ striated muscle. Functions of Cardiac (Heart) Muscle Tissue * Cardiac muscle tissue plays the most important
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change when you increased the frequency of the stimulation in cardiac muscle. | amplitude does not change because the cardiacs long refractory period prevents summation. | Why is it only possible to induce an extrasystole during relaxation? | the extrasystole can not occur until relaxation and so we could not achieve wave summation tetanus | Explain why wave summation and tetanus are not possible in cardiac muscle tissue. | Cardiac cells have longer APs and twitches than any other muscle cells
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Exercise has a major impact on the cardiovascular system and its efficiency in the human body. There are many concepts which need to be examined to understand exercise and the cardiovascular system‚ such as systolic and diastolic blood pressure‚ cardiac output‚ total peripheral resistance‚ and physiological pathways. According to the European Journal of Cardiovascular Prevention and Rehabilitation‚ exercise provides a change in the effectiveness of the cardiovascular system‚ whether over a short
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paper examples. Topic: Performing CPR on cardiac arrest patient. Specific Purpose: Give a lesson on recognizing need of CPR and performing CPR and defibrillator (cardiopulmonary resuscitation) effectively. Thesis: Everybody should know how to give a CPR on cardiac arrest patient to increasing the rate of survival. Introduction: 1. Importance of proper CPR and defibrillator. How can you save the life just listening me for 7 minutes. 2. What is the cardiac arrest? Making decision if patient need
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