In this article we will discuss about:- 1. Normal Values of Heart Rate 2. Regulation of Heart Rate 3. Mechanism 4. Factors Affecting. Normal Values of Heart Rate: In adult males - 72 per minute, the range is from 70 – 80 per minute. In adult females-the rate is slightly higher than in males. Cause may be due to: (a) [...]
In this article we will discuss about the anatomy of human heart with the help of suitable diagrams. The human heart is roughly heart-shaped structure and rests obliquely in the thoracic cavity (Fig. 7.3). The anterior surface of the human heart faces the sternum, the posterior surface—the base of the cone faces the vertebral column and the inferior or diaphragmatic [...]
The following points highlight the three types of circulations through special regions of heart. The types are: 1. Coronary Circulation 2. Hepatic Portal Circulation 3. Hypophysial Portal Circulation. Type # 1. Coronary Circulation: The flow of oxygenated blood from the ascending aorta to the heart muscle and the return of deoxygenated blood from the heart muscle to the right atrium [...]