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 [...]
Anatomy of Circulation: Blood enters lungs through two sources; pulmonary artery and bronchial arteries. The cross-sectional area of the pulmonary artery is same as that of the aorta, but it is more elastic and distensible. Through the pulmonary artery venous blood of the right ventricle goes to the lungs for oxygenation. It also carries nutrition to the pulmonary tissues. Bronchial [...]
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 [...]