CORONARY CIRCULATION AND VENOUS DRAINAGE OF THE HEART
Introduction Coronary circulation refers to the network of blood vessels that supply oxygen and nutrients to the heart muscle. The heart’s own blood supply comes from the coronary arteries, which branch off the aorta. Venous drainage involves the collection of…
DRAINAGE
Drainage is a process whereby excess water in the soil is removed artificially to promote good farming activities. In other words, drainage is the withdrawal of excess water from the soil while at the same time retaining adequate reserves to…
DRAINAGE OF NIGERIA
Drainage refers to water bodies like rivers and lakes. Drainage of Nigeria is discussed in two parts – rivers and lakes. RIVERS IN NIGERIA: Nigeria is drained by two main rivers – Rivers Niger and Benue. River Niger, the largest…
RELIEF AND DRAINAGE OF WEST AFRICA
The relief of West Africa can be grouped into three classes as follows: 1. The lowlands: These areas are below 300m above the sea-level and are made up of sedimentary rocks. The lowlands are further sub-divided into two: The interior…
Study Guide
