Circulatory System

• one word for heart

  cardio
• a channel or passage where blood passes

  vascular
• it is a hollow muscular organ that is located just behind the sternum and between the lungs


  heart
• it is enclosed in a protective sac called?

  pericardium
• beneath the pericardium is the heart wall called?


  myocardium
• the heart has 4 chambers, what are the upper and lower chambers called?

  atria or atrium

  ventricles
• they act as reservoirs for blood entering the heart

  atria
• which atrium holds blood from the lungs?

  left
• they function in pumping blood

  ventricles
• it divides the heart from the left and right side

  septum
• they are flaps of muscle that prevent the backflow of blood

  valves
• it divides the right atrium from the right ventricle


  tricuspid valve
• the bicuspid or mitral valve divides the left atrium from the left ventricle
• there are three kinds of blood vessles

  • artery
  • venules
  • capillaries
• they carry the blood away from the heart, except the pulmonary artery that carries blood with carbon dioxide


  arteries
• the smallest arteries are called arterioles


  they branch into finer blood vessles called capillaries
• they allow the exchange of materials and help control the temperature of the body

  capillaries
• the largest veins are the ones connected to the heart. what are they called?

  superior and inferior cavas
• it is referred to as the red river of life

  blood
• it is the liquid part of blood

  plasma
• they are produced in the red marrow of the blood

  RBC or erythrocytes
• they are fragments of cells

  platelets or thrombocytes
• fewer than the red blood cells

  WBC or leucocytes
• the blood circulate in 3 paths which are?

  systemic, pulmonary and coronary
• it is the biggest flow that involves the whole body system

  systemic
• the circulation is only between the heart and lungs

  pulmonary
• it is the movement of blood through the tissues of the heart

  coronary
• the arteries become narrow because of too much fats on its walls, also known as arteriosclerosis


  hypertension
• when a blood clot of formed and blocks the arteries to the brain

  stroke
• caused by rheumatic fever that occurs with repeated throat infections by bacteria

  rheumatic heart disease
• cancer of the blood

  leukemia
• low production of red blood cells and iron

  anemia