CIRCULATORY+SYSTEM+5




 * Body System Checklist** - **Circulatory System (Heart, blood and vessels)**

ü Major **__functions__** of circulatory system to pump blood throughout the body using pulmonary and systemic circulation. Pulmonary is carrying blood out of the pulmonary arteries through the right ventricle. It then travels to the lungs where the CO2 and O2 exchange is made. Back in the left atrium via the pulmonary artery. Systemic carries the blood through the aorta out of the left ventricle to the capalaries in the body tissues where the CO2 and O2 ecchange is made. Back in through the vena cava.

ü Describe how the **__structure__** of a heart muscle cell provides an advantage on its **__function__**. (include: shape of cell, intercalated discs and striations) Heart cells are long and connected together by intercalated discs which are contacted tightly and prevent them from pulling apart. This allows the heart cells to branch out to the others and the electrical impulses are closer together.

ü Explain the major parts of the **__heart__** (including the four chambers and 4 valves), major arteries (including coronary arteries as a group), major veins- and list the function(s) of each (arteries and veins, and valves as a whole). Include a **//diagram//** of the heart with chambers and major vessels. right atrium, left atrium, right ventricle, left ventricle are the 4 chambers of the heart. The 4 valves are the tricuspid, the bicuspid, the pulmonary semilunar, and the aortic semilunar valve. Aorta, pulmonary arteries. Superior vena cave, inferior vena cava, and the pulmonary veins. Arteries carry blood away from heart, veins carry blood to heart, and valves stop backflow of blood.

ü Describe how blood carries **//oxygen and carbon dioxide//** (what molecules carry each?). Blood has a protein called hemoglobin and that carries oxygen and carbon dioxide.

ü Name the **__main types of cells in your blood__** (red blood cells, white blood cells and platelets) and their //functions//. Red blood cells- transports oxygen from lungs to tissues and the opposite with co2. White blood cells- protect the body of invading microorganisms and remove dead cells from the tissues. Platelets- prevent blood loss by blocking off any wounds.

ü  Describe the **__path__** blood travels through your body: Include both **__Pulmonary__** and **__Systemic__** circulation. Deoxygenated blood goes to the superior vena cava or inferior vena cava. the blood goes into the right atrium passes the tricuspid valve and into the right ventricle. the blood then, passes the pulmonary valve and into the pulmonary artery. The blood goes to the lungs and gets oxygenated. then the blood goes back to the heart through the pulmonary veins. the blood then goes into the left atrium passes the bicuspid valve and into the left ventricle. it then goes pass the aortic valve and into the aortic arch.the blood then goes through arteries and is distributed throughout the body. The blood comes back to the SVC/IVC and the cycle starts over again. Superior vena cava/Inferior vena cava -> Right atrium -> Tricuspid valve -> Right Ventricle -> Pulmonary valve -> Pulmonary artery -> Lungs -> Pulmonary Veins -> Left atrium -> Bicuspid valve -> Left ventricle -> Aortic valve -> Aorta/Aortic arch -> Body

ü **// Explain //** what coronary artery disease is (**__CAD__**). **//Explain//** what a myocardial infarction (**__MI__**) is. Include **//risk factors//** for each. CAD is when the blood supply to the arteries that supply blood to the outside of the heart are blocked by fat or a clot. The region of Dead heart tisue. If the infarct or clot is too large it may not be able to pump enough blood to keep the person alive.

ü Find **//4 fun or incredible facts//** about your body system. You may list the facts as sentences or use them to create trivia questions. Women hearts beat faster than men. The human heart has enough pressure to shoot blood over 30 feet. Scientists have discovered that the longer the ring finger is in boys the less chance they have of having a heart attack. Most heart attacks occur between the hours of 8 and 9 AM.

ü Explain how your system might be involved, or not involved in the driver’s injury. Cite specific evidence. The driver is feeling really cold because he/she is losing too much blood. The blood that is pumped to the rest of his/her body is coming out of the puncture wound, the mouth, the penis, and the anus.

ü Develop **//10 multiple choice questions//** and put them in your wiki so that your peers can answer them after you go over your body system. 1. What is the main function of the circulatory system? a. to pump blood b. to help you pee/poop c. to make blood d. make your teeth whiter

2. What separates the ventricles in the heart? a. tricuspid valve b. blood c. rectum d. interventricular septum

3. What are the 2 main types of chambers in your heart? a. aorta/vena cava b. atrium/ventricle c. pulmonary artery/carbiac vein d. apex/bicuspid

4. What are red blood cells? a. carry oxygen in the blood b. protect form infection c. help blood stick together d. cause heart attacks

5. What are white blood cells? a. Protect from infection b. carrry CO2 in the blood c. cause CAD d. all of the above

6. What are blood platelets a. carry protein in the blood b. make the blood travel faster c. help in preventing blood loss d. all of the above

7. What is one of the two types of circulation? a. systemic b. respirtory c. digestive d. nervous

8. What is CAD? a. a disease of the coronary arteries b. a breathing problem c. a brain problem d. mental disorder

9. What is the most important artery in the heart? a. aorta b. vena cava c. superior vena cava d. pulmonary

10. What is a miocaryal infarction? a. The blockage point in the artery b. a mental disorder c. a artey in the heart d. a brian disease.

11. Who is the best one in the class? a. Jason b.Jason c.Jason d.Jason e.None of the above media type="youtube" key="LqhvmUEdOYY" height="364" width="445"