Tutor profile: Eric Y.
Subject: Basic Chemistry
Relate the major principles of chemistry to the study of biology.
Biological systems - life - is composed of matter so it is governed by chemical processes. These include a huge variety of reactions many of which can be observed at the cellular level. It can be found that all the manifestations of life visible with the naked eye are effects of chemical reactions occurring at the microscopic level.
Why is human biology a science?
Human biology is a science because the human body is very complex, and it is important to have a thorough understanding of the structures and systems that make it up. The study of biology is extremely broad, as it includes all living organisms. Humans are extremely different from many other living things such as a primitive bacteria or a single-celled protozoan. This is why there are more specific branches of biology, so that the areas of study can be more focused on specific organisms. Human biology deals with the biological aspects of the human body, from the molecules that make up parts of the cell, to the major organ systems that keep us alive.
Describe the flow of blood from the right atrium of the heart to the aorta.
Deoxygenated blood returns to the right atrium via great veins known as the Superior and inferior vena cava. From there it passes through the tricuspid valve into the right ventricle. Then it travels through another valve, the pulmonary valve, and into the pulmonary arteries to travel to the lungs in order to get oxygenated. The blood then returns to the left atrium via the pulmonary veins. It passed through the mitral valve to get to the left ventricle. it Then passes through the aortic valve to get to the aorta which supplies it to the rest of the body.
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