|Open system of circulation||Closed system of circulation|
|In an open system, hemolymph directly
fills the organs and tissues.
|In a closed system, the blood circulates
within closed vessels.
|The intestinal fluid and blood are mixed in this.||Blood and interstitial fluid are distinct from each other.|
|Ex- molluscs, and arthropods.||Ex-annelids and vertebrates.|
|Blood is directly pumped into the cavity of the body.||Blood is pumped with the help of vessels by the heart.|
Answered by Pragya Singh | 1 year ago
Draw a standard ECG and explain the different segments in it.
Explain heart sounds.
Define a cardiac cycle and the cardiac output.
What is the significance of atrioventricular nodes and atrioventricular bundles in the functioning of the heart?
The sino-atrial node is called the pacemaker of our heart. Why?