In this article we will discuss about the changes which occurs in cardiovascular system during exercise. I. Heart and Exercise: Prolonged and systematic exercise causes enlargement of the heart, and this is happens only to cope with the excessive work load imposed upon the heart during work. There is a lot of misunderstanding that prolonged exercise may cause dilatation of [...]
In this article we will discuss about:- 1. Introduction to Capillary Circulation 2. Methods of Studying Capillary Circulation 3. Peculiarities 4. Control 5. Interchange. Introduction to Capillary Circulation: The average length of a capillary is 0.5 -1 mm, average diameter, 8 µ or often less than a red cell, average velocity of flow, 0.5 -1 mm per second. Capillaries are [...]
Circulation in a particular region or organ is directly proportional to the degree of local activity. It is adjusted on two lines: (1) By regulating the general circulation, and (2) By adjusting the local blood vessels. Generally, vasodilatation of an active part is accompanied with vasoconstriction of other inactive parts. In this way, blood is shifted from the inactive to [...]