Posts tagged as blood

The Circulatory System Notes

The Circulatory System The circulatory system consists of the heart and the blood vessels (veins, arteries and capillaries). Veins bring blood away from the heart. They have a wider lumen and thinner walls than arteries, and valves to prevent backflow of blood. Arteries carry blood away from the heart. they… Continue Reading →

All Biology Definitions for Leaving Cert

The Scientific Method Scientific Method is a process of investigation where problems are identified and their explanations are tested by carrying out experiments. Observation : An unbiased, accurate report of an event. Hypothesis : An educated guess based on observations. Experiment : An experiment is designed to test a hypothesis…. Continue Reading →