Music 6 Essays

Music 6 Essays Music 6 Paper Music 6 Paper Wagner had an opera house built specifically for the performance of his own pears in the German town of .. Bayreuth Which pair are operatic compositions by Wagner? Tannhauser and The Ring In Music, the early twentieth century was a time of Revolt and Change All of the following composers worked in the early years of the twentieth century EXCEPT Hector Berlioz The glissando, a technique widely used in the twentieth century is A rapid slide up or down a scale The most famous riot in music history occurred in Paris in 1913 at the first performance of Stravinskys Rite of Spring Of the following, who was not a major influence on the breakdown of realism in the early 20th century? Copland A fourth chord is A chord in which the tones are a fourth apart, instead of a third. Striking a group of adjacent keys on a piano with the fist or forearm with result in a Tone cluster When two different triads such as that built on E and that built on A, are played at the same time, the technique is known as A polychord Rhythm in music of the 20th century tends to be either very asymmetrical or very symmetrical. Ostinato A scale made up of just the black keys within the octave on the piano keyboard is called a . scale Pentatonic Impressionism in music is characterized by a stress on tone color, atmosphere, and fluidity The most impressionist composer was Claude Debussy Impressionist painting and symbolist poetry as artistic movements originated in .. France Of the following, who was known as a creator of orchestral versions of his own and others great piano works? Ravel The immense success of Stravinskys 1910 ballet the first original work he composed for Diaghilevs Ballet Russe, established him as a leading young composer The Firebird After studying law at the University of St. Petersburg, Stravinsky at the age of twenty one began to study composition privately with Nikolai Rimsky-Korsakov Expressionism is an art concerned with Social protest and nightmarish states of mind Schoenbergs personality inspired love and loyalty among his students, including Alban Berg and Anton Webern Some of Bergs pieces call for an unusual style of vocal performance halfway between speaking and singing called Sprechstimme The ordering of twelve chromatic tones in a twelve-tone composition is called All of the above In the opera Wozzeck, the title character is Soldier Wozzeck drowns while searching for a Knife

4 Steps of Cardiac Conduction

4 Steps of Cardiac Conduction Have you ever wondered what causes your heart to beat? Your heart beats as a result of the generation and conduction of electrical impulses. Cardiac conduction is the rate at which the heart conducts electrical impulses. These impulses cause the heart to contract and then relax. The constant cycle of heart muscle contraction followed by relaxation causes blood to be pumped throughout the body. Cardiac conduction can be influenced by various factors including exercise, temperature, and endocrine system hormones. Step 1: Pacemaker Impulse Generation The first step of cardiac conduction is impulse generation. The sinoatrial (SA) node (also referred to as the pacemaker of the heart) contracts, generating nerve impulses that travel throughout the heart wall. This causes both atria to contract. The SA node is located in the upper wall of the right atrium. It is composed of nodal tissue that has characteristics of both muscle and nervous tissue. Step 2: AV Node Impulse Conduction The atrioventricular (AV) node lies on the right side of the partition that divides the atria, near the bottom of the right atrium. When the impulses from the SA node reach the AV node, they are delayed for about a tenth of a second. This delay allows atria to contract and empty their contents into the ventricles prior to ventricle contraction. Step 3: AV Bundle Impulse Conduction The impulses are then sent down the atrioventricular bundle. This bundle of fibers branches off into two bundles and the impulses are carried down the center of the heart to the left and right ventricles. Step 4: Purkinje Fibers Impulse Conduction At the base of the heart, the atrioventricular bundles start to divide further into Purkinje fibers. When the impulses reach these fibers they trigger the muscle fibers in the ventricles to contract. The right ventricle sends blood to the lungs via the pulmonary artery. The left ventricle pumps blood to the aorta. Cardiac Conduction and the Cardiac Cycle Cardiac conduction is the driving force behind the cardiac cycle. This cycle is the sequence of events that occur when the heart beats. During the diastole phase of the cardiac cycle, the atria and ventricles are relaxed and blood flows into the atria and ventricles. In the systole phase, the ventricles contract sending blood to the rest of the body. Cardiac Conduction System Disorders Disorders of the hearts conduction system can cause problems with the hearts ability to function effectively. These problems are typically the result of a blockage that diminishes the rate of speed at which impulses are conducted. Should this blockage occur in one of the two atrioventricular bundle branches that lead to the ventricles, one ventricle may contract more slowly than the other. Individuals with bundle branch block typically dont experience any symptoms, but this issue can be detected with an electrocardiogram (ECG). A more serious condition, known as heart block, involves the impairment or blockage of electrical signal transmissions between the hearts atria and ventricles. Heart block electrical disorders range from first to third degree and are accompanied by symptoms ranging from light-headedness and dizziness to palpitations and irregular heartbeats.