Cardiac anatomy

There are many different parts of skeletal muscles that are important to the function of the muscles. Each muscle is made up of a lot of muscle fibers. Each muscle fiber has a thin coating covering the fiber called the sarcolemma. The muscle fibers also have a cytoplasmic type substance called sarcoplasm. Sarcoplasm contains large amount of glycosomes and myoglobin. Myoglobin is a protein that stores oxygen inside the muscle fibers. The muscle fibers contain striations that are made up of…

The muscular system is the system of the body that contains smooth, skeletal, and cardiac muscle tissue. This system contains a variety of functions including movement of the body and of materials throughout the body, maintenance of posture, and heat production. Muscles are the only tissue in the body that have the ability to contract and therefore move the other parts of the body. The muscular system is important because without it, life would completely stop. Muscles produce not only…

With CPR and First Aid training you could learn how to bring someone back to life, help them stop choking, or more simple procedures such as making a tourniquet to stop bleeding. If CPR is performed close to a cardiac arrest, choking, or whatever it may be can triple a person’s chance of survival. “Cardiovascular disease is the leading cause of death in the United States” (Monette, Michael. 2012). If teachers take a stand to advise students to be bold and encourage…

Many people think that muscles are mainly just for being strong and fit, but muscles do much more than that. Muscles are cellular fibers that contract and retract on bones, causing movement. This allows people and animals to move from one place to the other. There are several different types of muscles, including fast and slow twitch muscles, skeletal muscles, striated muscles, smooth muscles, and more. Every muscle serves a purpose, and each is vital to a person’s well-being. Muscles work…

Premature Ventricular Contraction A premature ventricular contraction is an irregularity in the normal heart rhythm. These contractions are extra heartbeats that occur too early in the normal sequence. In most cases, these contractions are harmless and do not require treatment. CAUSES Premature ventricular contractions may occur without a known cause. In healthy people, the extra contractions may be caused by: • Smoking. • Drinking alcohol. • Caffeine. • Certain medicines. • Some…

muscle in a woman’s uterus or womb helps to push out the baby out of the mother’s body. Smooth muscles in the bladder give people the ability to hold in their urine and help excrete urine. The last main muscle cell is the cardiac cell, controls the beating of the heart. Cardiac muscles continually contracts (become smaller) and relaxes (becomes larger), pumping blood around your body 60 to 70 times a minute, 100,00 times a…

they know what to do when a person goes into cardiac arrest. In school as long as the student has a year of training in CPR and as long as they can past a CPR written test and then pass a test performed on a manikin baby and adult manikin they will receive a certification in CPR. In order to graduate a student would have to take one year of CPR. If a child knows CPR they don’t have to feel helpless when a family member or another person goes into cardiac arrest they can perform CPR and save a…

Case Study on Sam the Runner Presented by: Jaclyn Kerby Meagan Greathouse Krista Young Erin Lofton Suzauna Adams Glossary Arrhythmia: occurs when the heart no longer beats in a pattern considered regular or normal. Cardiac arrest: the sudden loss of heart function, breathing and consciousness caused by abnormal or irregular heart rhythms (ex: ventricular fibrillation) Cardiomyopathy: a disease of the heart muscle (myocardium), may be acquired or hereditary…

defined as a core body temperature of 35°C (95°F) or lower. It should be treated as a medical emergency. Shivering is an early sign. Patients with severe hypothermia (core temperature less than 32°C) may appear dead or may have hypotension, apnea or cardiac arrhythmias. Hematologic, respiratory, renal and endocrine abnormalities are common in severe hypothermia.” 1 Hypothermia can result from many different scenarios. A common…

the cardiac cell. Myofibrils, a collection of individual sarcomeres, enable contraction and relaxation of the myocyte. The sarcomere is the chief contractile unit of the cell. It is made up of two main proteins, myosin (thick filament) and actin (thin filament), as well as two regulatory proteins, tropomyosin and troponin. In order for the myocyte to contract and shorten it must receive a stimulus allowing myosin and actin to interact. This stimulus comes from the depolarization of the cardiac…