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Structure of the Heart The heart has four chamberswo upper chambers call the right and left atriumand two lower chambers called the right and left ventricle septumThere is another wall between the. PHT 1261C Tests and Measurements. Dr. Kane. Definitions. Tone. Factors affecting tone. Postural Tone. Hypertonia. Hypotonia. Dystonia. Spasticity – velocity dependent. Clasp knife response. UMN syndrome. Making a Fist. By Naomi . Shihab. Nye. For the first time, on the road north of Tampico,. I felt the life sliding out of me,. a drum in the desert, harder and harder to hear.. I was seven, I lay in the car. 08/29/2014. Unit . 1.3 – Fingerspelling: Fist Letters. Category. LETTER. Unit . 1.3 – Fingerspelling: Fist Letters. A E I O S T N M. Unit . 1.3 – Fingerspelling: Fist Letters. Fist Letter Combinations. Dr. Ayisha Qureshi . Assistant Professor,. MBBS, MPhil. Location of the Heart:. The Pericardium & the Pericardial Sac: . The . heart is enclosed in the double-walled, membranous . pericardial sac . Pamela BL. Introduction . The cardiac muscle forms the muscular wall of the heart that is it forms the myocardium.. Some of the cardiac muscle is also present in the walls of the aorta, pulmonary vein and superior vena cava.. Adjustments to stroke volume. What is a heart attack, what are short and long term causes of heart attacks?. Heart disease. Myocardial infarction. Coronary arteries nourish cardiac cells. Blockage due to plaques, embolisms, vascular spasm. Composed of cells that are highly specialized to shorten in length by contractility.. Made up of cells that are called . myocytes. .. Elongated in one direction (muscle . fibres. ).. Special Terms. Plasma Membrane . Location. Superior surface of diaphragm. Left of the midline. Anterior to the vertebral column, posterior to the sternum. Heart Anatomy. Coverings of the Heart: Anatomy. Pericardium – a double-walled sac around the heart composed of:. Contractile. Made of contractile proteins. Cells are called fibers. Skeletal Muscle. 40% of body weight. Under voluntary control; attached to skeleton. Striated, or banded, appear. ance. Cells have multiple nuclei. When you are beginning to practice progressive muscle relaxation exercises keep in mind the folloing points Physical injuries If you have any injuries or a history of physical problems that may caus Understandings. U.D.4.1: structure of cardiac muscle cells allows propagation of stimuli through the heart wall. . U.D.4.2: signals from the sinoatrial node that cause contraction cannot pass directly from atria to ventricles.. Muscles and Muscle Fiber. Structure.     . Muscles are composed of many fibers that are arranged in bundles called FASCICLES. Individual muscles are separated by FASCIA, which also forms tendons. Deltoid. The muscle on the front of your upper arm. Biceps. Your chest muscles. Pectoralis. Major. Your stomach muscles (Abs). Rectus . Abdominus. The muscles on the side of your “core” – or “next to your abs”. stimulated both the recruitment and the development of collateral vessels around the heart, providing newand permanent pathways for the delivery of blood and oxygen.The mid-1960s saw the development t