Cardiac cycle

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  • Essay On Muscle Contraction

    “A muscle is a tissue composed of cells or fibres, the contraction of which produces movement in the body.” (Dictionary) There are three different types of muscle; voluntary skeletal muscle, involuntary smooth muscle and cardiac muscle. Muscles have many different functions within the body. One function of muscle is movement. It is the only tissue in the body which is able to contract and therefore can move more than other body parts. Another function is the maintenance of posture. The muscles…

    Words: 1219 - Pages: 5
  • Silent Killer Essay

    insidiously and have deadly effects. It is important to know that the signs and symptoms of heart disease present themselves different in men versus women (Nursing Update, 2008). More often than not, men will experience chest pain or discomfort in cardiac crisis while women will experience nausea, vomiting, and back or jaw pain. Men are more susceptible to developing heart disease after the age of 55, whereas women are more susceptible after the age of 65. Common risk factors for heart disease…

    Words: 1646 - Pages: 7
  • Evolution Of Sharks Essay

    It has been noted that during breeding season, sharks will fast for an extended amount of time, and live off of lipids stored in their livers. Sharks do not necessarily require mating in order to reproduce, this type of reproduction is referred to as “parthenogenesis”. Shark’s senses are highly developed, most particularly their sense of smell which allows them to detect a subtle smell to its exact source. Shark’s sense of sight and hearing, although not quite as developed as their sense of…

    Words: 712 - Pages: 3
  • Actinin-3 Essay

    Alpha-actinin-3 is a protein that is encoded by the “athletic gene”, ACTN3, in humans. ACTN3 is located at the long arm of chromosome 11 and encodes for the expression of alpha-actinin-3 protein in fast glycolytic muscle fibers. Fast glycolytic fibers, or type IIb, are responsible for the generation of rapid forceful contractions. There are some individuals who do not have a working version of this gene, which causes the muscle protein to not be created. These individuals are said to have the…

    Words: 1395 - Pages: 6
  • Research Paper On Vascular Anomalies

    Vascular anomalies are a serious medical condition that affect blood vessel formation in as many as 1 in 10 people (Richter and Suen 2015). Vascular anomalies can be divided into two broad categories: vascular tumors and vascular malformations (Richter and Suen 2015). Vascular tumors, also known as hemangiomas, are characterized by rapid growth with most undergoing involution once the patient has reached a certain age (Richter and Suen 2015). On the other hand, vascular malformations are…

    Words: 1329 - Pages: 6
  • Passive Forces In Muscle Movement

    Passive Forces in Limb Movements: Help or Hindrance Introduction Most animals are enabled to move because of contractions and relations of muscles. Vertebrates and invertebrates movement is initiated by a combination of both passive and active forces (Linke, Granzier and Kellermayer, 2003). Passive forces in muscles are forces that develop when an inactive muscle is stretched from its resting length in resistance of the induced stretch. Passive force in the limbs movement of both vertebrate and…

    Words: 974 - Pages: 4
  • Advantages And Disadvantages Of Cardiopulmonary Resuscitation

    Cardiopulmonary resuscitation, or CPR, is an emergency procedure taken to restore spontaneous blood circulation and breathing for someone who is in cardiac arrest (“Cardiopulmonary Resuscitation”). Cardiac arrest is the sudden loss of blood flow from the heart’s spontaneous shut down (“Cardiopulmonary Resuscitation”). Some people think of the fake dummies used in CPR classes or learning about it at swim lessons. Some people think of Bee Gee’s song “Stayin’ Alive”, but there’s a lot more to…

    Words: 1452 - Pages: 6
  • Single-Linear Epidemiology: A Case Study

    All heartbeats consist of a mechanical component and an electrical component. The heartbeat is created by cardiac depolarization caused by electrical currents that induce muscle contraction. The electrical component of the heartbeat begins in the Sinoatrial (SA) Node and its function is to send electrical impulses that stimulate your heart to beat, and these impulses induce the atria to contract. As the atria contract, the impulse moves on to the Atrioventricular (AV) node which leads the…

    Words: 1626 - Pages: 7
  • Essay On Muscular Dystrophy

    muscular protein called dystrophin. Dystrophin is a skeletal muscle protein. This protein is known for keeping the muscle cells intact. With the defect in the protein, it causes rapid muscular deterioration. This protein is also found in the cardiac muscles and the brain. The dystrophin gene is located on chromosome X on the short arm. It contains more than 3685 amino acids. While it only accounts for a little of the proteins, its effects are very important. Duchenne and Becker the cells…

    Words: 1133 - Pages: 5
  • Exercise Affects The Human Body

    Exercise effects the human body in many fascinating ways; as it causes the body to adapt and alter to aid the body’s stimulation. Take when carrying out the Harvard step test practical. This test is where a person carries out a period of exercise for a certain length of time and then records their heart rate before and for so long after the period. This shows how fit and healthy the heart is by showing how long it takes for the heart to go back to a regular resting pulse rate. “The…

    Words: 1102 - Pages: 4
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