Circulatory System
Tuesday, 09 August 2022 12:31
Closed circulatory system
• Vertebrates
• Fluid confined to vessels
• Heart pumps blood with at a specific flow & pressure to organs
• Materials exchanged - diffusion - between blood and interstitial fluid bathing cells
Cardiovascular System = heart + blood vessels + blood
Circuits
Pulmonary Systemic Hepatic Foetal
Blood pathway between right Pathway between left
side of heart, to and right side of heart
lungs and back to the left
side of heart
Cardiac Cycle
• Heart is 2 pumps - left + right
• Connected in series
• Repetitive
○ Systole
○ Diastole
• Blood moves from high pressure to low due
Flow to Organ System
Areas of major capillary beds
• Brain, lungs
Anatomy Page 1
Tuesday, 09 August 2022 12:31
Closed circulatory system
• Vertebrates
• Fluid confined to vessels
• Heart pumps blood with at a specific flow & pressure to organs
• Materials exchanged - diffusion - between blood and interstitial fluid bathing cells
Cardiovascular System = heart + blood vessels + blood
Circuits
Pulmonary Systemic Hepatic Foetal
Blood pathway between right Pathway between left
side of heart, to and right side of heart
lungs and back to the left
side of heart
Cardiac Cycle
• Heart is 2 pumps - left + right
• Connected in series
• Repetitive
○ Systole
○ Diastole
• Blood moves from high pressure to low due
Flow to Organ System
Areas of major capillary beds
• Brain, lungs
Anatomy Page 1