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Cardiovascular Review Test Tomorrow Are you ready? Functions Your blood circulates throughout your entire body. It comes in contact with every single cell. What cells? Why? does it bring to the The Blood Brings… Because… Food Oxygen To support respiration, in order to create energy so the body can do stuff. It also Brings… Chemical messages (AKA Hormones) These messages allow the cells in one part of your body to communicate with cells in all other parts of your body. What does it remove from cells? Why? It removes… Wastes. Because if wastes build up they can poison cells, leading to their death and therefore the death of the entire organism. Sound Familiar???? Want candy??? Tell me EXACTLY what this relates to from earlier this year. (Hint there are three.) Heart Structure Please make me feel like I taught you something :’o) Name the 4 chambers the heart. What divides the right side from the left side? (From lab yesterday / in ya nose!) Chambers and a place to get Pierced!!! Right Atrium, Right Ventricle, Left Atrium, Left ventricle. Septum! Wow, what a little atrium you have?!?! Why are both atria much smaller than the ventricles? It’s a matter of distance. They are smaller b/c they need much less muscle b/c they only have to pump the blood a short distance from the atria to the ventricles. Atria Sm’atria, how bout dem ventricles? Your right and left ventricles are unique in structure compared to each other. This uniqueness in structure represents their differences in function. I ask you… Explain the difference in structure b/w the left and right ventricles. How does this difference in structure b/w the ventricles, represent a difference in function? The wall of the left ventricle is much thicker than that of the right ventricle. This means that the LV is more muscular than the RV. This is because the LV must pump to the entire body, while the RV only pumps to the lungs, which are much smaller and closer than the entire body. There are two circuits in the heart… The Pulmonary Circuit that pumps from the RV to the ????? The Systemic Circuit that pumps from the LV to the ?????? Keepin’ time…. The heart contains a small patch of cells that release a regular pulse of electricity to the heart. What is its name? WHY does it do this??????? Just in case your notes on blood are mediocre at best or overly extensive….. Plasma- Mixture of Water, nutrients, enzymes, wastes, and other materials. Red Blood Cells- Carry oxygen throughout the body. Contain Hemoglobin, which binds to oxygen and carbon dioxide. White Blood Cells- Defend the body from invaders. Long lifespan, staying in the body from months to years. Platelets- Responsible for sealing breaks in the circulatory system. Finally… You better be able to describe the flow of blood through the heart beginning at the right atrium and ending at the right atrium. Also be able to describe the condition of the blood at every point in the heart, as well as what happens to it in the body and the lungs