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The system of the body which deals with the blood, heart, arteries, veins & lymphatics is called? The Circulatory System The muscle layer of the heart is called? Myocardium The chamber of the heart where systemic circulation ends is the? Right Atrium The chamber of the heart where pulmonary circulation begins is the Right Ventricle Another name for the right atrio-ventricular valve is? Tricuspid Valve Another name for the left atrio-ventricular valve is? Biscuspid valve or Mitral Valve The "pacemaker" of the heart is also called? Sinoatrial Node (SA Node) The "wall" dividing the thoracic from the abdominal cavities is the? Diaphagm The portion of the blood that is about 95% water is? the Plasma What percentage of the blood cells make up the blood volume? 45% The blood cells responsible for clotting are called? Thrombocytes or Red Blood Cells (RBCs) The union of the distal ends of two arteries is called? Common pulmonary artery Blood vessels that carry the blood in the general direction towards the heart are? Veins The blood cells responsible for fighting off infections are? Leukocytes or White Blood Cells (WBCs) The blood cells which contain hemoglobin are Erythrocytes The vessel entering the heart that drains the abdomen and the lower extremities is the? Inferior Vena Cava (IVC) The first section of the aorta is call the? Ascending Aorta The number of vessels associated with the right atrium of the heart is? Three (3) The 2nd section of the aorta is called the? Arch of Aorta The study of blood is called? Hemotology The contraction phase of the cardiac cycle is? Systole The outer layer of an artery or veing is called the Tunica ______? Adventitia or Externa The 3rd section of the aorta is called the Descending thoracic aorta The normal pH of blood is 7.3 to 7.4 The minute tendinous chords connecting the atrio-ventricular valves of the heart to the papillary muscles is the? Chordae Tendineae The action of blood cells escaping the vascular system by passing through the walls of the capillaries is called? Diapedesis The final section of the aorta is called? Abdominal Aorta The name of the individual credited with the discovery of the circulation of blood? William Harvey The position with the body standing erect, facing the observer, & hands at the side with the palms facing the observer is said to be the? Anatomical position The middle layer of the wall of the heart is called? Myocardium The process by which a blood cell surrounds, engulfs & destroys foreign substances is: Phagocytosis The chamber of the heart where pulmonary circulation ends? Left Atrium What is the Universal Donor blood type? O The term visceral refers to organs contained within the body cavaties The aorta begins at this chamber of the heart? Left ventricle The aorta terminates by bifurcating into the? inferior end of the Abdominal Aorta Arteries have 3 layers in their walls while arterioles have 2 The region immediately inferior to the hypochondriac region of the abdomen is the Lumbar region The chamber of the heart where systemic circulation begins is the? Left ventricle The innermost layer of an artery or vein is made up of this type of basic elemental body tissue? The Endocardium is made up of ENDOTHELIUM type of EPITHELIAL TISSUE The SA Node is located in which chamber of the heart? Right Atrium The Tricuspid valve is located between the 2 chambers of the heart? Right Atrium & Right Ventricle The Biscuspid valve is located between these 2 chambers of the heart? Left Atrium & Left Ventricle (biscuspid valve is a/k/a the Mitral valve or the left atrio-ventricular valve) The Mitral valve is located between these 2 chambers of the heart? Left atrium and Left ventricle (mitral valve is a/k/a left atrio-ventricular valve or bicuspid valve) The most superior chamber of the heart containing oxygenated blood is? a/k/a upper chambers are called ATRIA (atrium or auricle) The Tricuspid valve is located between these 2 chambers of the heart? Right atrium and Right Ventricle The most inferior chamber of the heart containing de-oxygenated blood is? Left Atrium The Pacemaker is located in this chamber of the heart? Right Atrium a/k/a senoartrial Node or SA Node The AV-Node is located in this chamber of the heart? Right atrium Vessel entering the heart that drains the head, neck, and the upper extremities is the? Superior vena cava (SVC) Vessel entering the heart that drains the heart muscle is? ???? Vessels entering the heart that return blood to the heart from the lungs are? Pulmonary veins Vessel leaving the heart that carriers blood towards all parts of the body is? Ascending aorta The process by which leukocytes surround, ingest, & destroy foreign substances in the blood stream is? Phagocytosis The papillary muscles are always found in these chambers of the heart? Left & Right atrium The chordae tendinae are always found in these chambers of the heart? Left & Right atrium Another name for the Pacemaker of the heart is the? Sinoatrial Node (SA Node)