Learning outcomes:

At the end of this chapter students will be able to know about-

• Circulatory system: Heart: Structure, heart muscles, conducting system of heart, origin and transmission of cardiac impulse; ECG, control and requirements for the normal heart beat, cardiac cycle, cardiac output, nervous regulation of heart, cardiac reflexes.  
  
• Blood vessels: Types of blood vessels and their functions. 
  
• Blood pressure: Measurements and regulation of blood
  
• pressure, nervous control and chemical control. Arterial pulse: Definition and clinical study, recording of arterial pulse. 
  
• Capillary circulation: Importance and functions.
  
• Regional blood circulation: Pulmonary circulation, hepatic circulation, renal circulation and cerebral circulation.
  
• Lymphatic system: Lymph, Lymph capillary, Lymphatic vessels, lymph node,Lymphatic organs  Composition and formation of lymph, Function and circulation via lymphatic system.