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The Circulatory System

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kajanan nandakumar

on 31 January 2014

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Transcript of The Circulatory System

How The Blood Flows Through The Heart
The deoxygenated blood enters the heart throughout the inferior and superior vena cava. From there, it enter the right atrium. Between the right atrium and the right ventricle there is a special valve which senses if there is blood in the ventricle. When the right ventricle is full, the special valve closes down so that the oxygen poor blood does not enter back into the atrium again when the heart is squeezing. From there the blood enters the pulmonary artery and end up in the lungs. After it gets oxygen rich, the blood is sent back to the heart through the pulmonary veins. The blood is dumped into the left atrium and there is another special valve between the left atrium and the left ventricle. The valve closes down so that the blood doesn't go back to the atrium when it squeezes. The blood is transported to the aorta after it leaves the ventricle. From the aorta it is supplied throughout the whole body for organ use.
This process is continuously repeated by the heart, adding up to about 2000 gallons of blood passing through the heart daily. This might vary in every individual as there are many factors influencing this such as your weight, gender, exercise and etc.

The Function Of The Circulatory System
The circulatory system, also known as the cardiovascular system, is considered to be the mitochondria of the human body as a mitochondria is the power house of a cell. The circulatory system delivers blood to many organ systems, including : the nervous system (brain, etc.), the muscular system ( biceps, triceps, etc.), the respiratory system (lungs, alveoli, etc.), the digestive system ( stomach, intestines, etc.) and even to the circulatory system itself. The skeletal system however does not need the circulatory system . The circulatory system is responsible for retrieving the oxygen from the respiratory system and nutrients from the digestive system, then it delivers the oxygen and nutrients to the organs that requires it in order to process. Blood that is filled with oxygen is red, but the farther blood goes through the circulatory track (in the arteries), the more it gives away its oxygen to organs and organ systems, concluding with the blood having a blue color, and in that case it has to go to the vein and go to the lungs to refill on oxygen.
Diseases and Treatments for Diseases
1.
Rheumatic Heart Disease
:
one or more of rheumatic heart attacks ( an inflammatory disease usually 2-3 weeks after streptococcal infection) causes rheumatic heart disease. It does not have to affect the heart, but in some scenarios, it can affect the heart. Some symptoms during rheumatic heart disease include: weakening of the heart muscles, scaring of the valves and more. The serious cases involve surgery being required to repair or even replace the valves . You can get anti-coagulant medications. Make sure the the medications are at a safe level, to make sure take blood tests. If the disease is not serious, you can get penicillin needles to stop further rheumatic fever which leads to rheumatic heart disease.
2.
Hypertensive heart disease
:
this disease is cause by high blood pressure from an unknown origin. It can also be caused by secondary hypertension ( when there is high blood pressure caused from a certain disease for example: tumors, damage to kidneys on blood vessels and more). High blood pressure may overburden the heart and blood vessels. There are no major symptoms of high blood pressures, but some people have head aches and more, but some people have high blood pressure without knowing it. Diagnosing it can help prevent heart disease, stroke, eye problems and chronic kidney disease. To reduce blood pressure you should reduce eating fatty foods.

Major Organs, Structures and Locations
1. External and Internal carotid artery: Both outside sides of the eyes 2. Common Carotid: Both Sides of the neck 3.Brachioce Phallic Artery: Above the biceps 4. Subclavian Artery: Between neck and shoulder 5.Heart: In front of left lung 6. Axillary Artery: Beside your shoulder
7.Abdominal Aorta: Between lung and stomach 8. Brachial Artery: In between biceps and triceps 9. Renal Artery: Left of Your Stomach 10. Common Iliac Artery: Right and left side of the pelvis where the abdominal artery slits 11.Internal Iliac Artery: Right Under Common Iliac Artery 12. Radial Artery: Short distance above waist
13. Ulnar Artery: At the wrist 14. External Iliac Artery: Right under waist where our legs separate 15.Deep Femoral Artery: Branches out of the external iliac artery and supports the thigh muscles 16. Femoral Artery: Branches out Deep Femoral Artery 17.Popliteral Artery: Right in front of the knee
18. Peroneal Artery : supplies tibial part of leg 19.Internal Jugular Vein: Top of neck
20. Axillary Vein: Right beside Axillary Artery 21.Cephalic Vein: In between Biceps and triceps
22. Brachial Vein: Right beside rachial artery 23. Basilic Vein: Branch of axillary vein; in the bicep 24. Renal Vein: Right beside renal artery




Difference Between Arteries, Veins and Cappilaries
There are several differences between arteries, veins and capillaries. Arteries are responsible for carrying blood away from the heart and to the organ systems that need it. The blood in arteries is oxygenated while blood in the veins are deoxygenated, but while traveling through the hearts and lungs it is the opposite. Cappilaries are the points at which the transformation of arteries becomes veins.
Does The Circulatory System Depend On Any Other Organ Systems
The circulatory system does depend on other organ systems, and it can not preform its duty or function because the blood retrieves its oxygen and nutrients from other organ system, and there are two systems that tell the circulatory system what to do and helps it move. The muscles of the heart pump it and the nervous system tells it what to do. The skeletal and system and the Integumentary system (skin, hair ect.) protect the body including the circulatory system. It always returns to the respiratory and digestive system because the blood in the circulatory system has no use without those 2 systems, because they are the ones that gives the circulatory system the
purpose of giving nutrients and oxygen to the rest of the organs systems that need it
. The following pictures include organ systems that depend on the circulatory system.
The Circulatory System
Cycle That The Blood Flows
The blood is pumped by the heart, and flows through the arteries through all the organs that needs it to process. Then it reaches the cappilaries to be able to transfer it to the veins. After it reaches the veins it has to travel back to the heart. Next it goes to the lungs for the oxygen and the digestive system for nutrients, and then the process is repeated until you die.
Fun Facts
End to end, if you aline the cappilaries, veins and arteries it will calculate up to 60 000 miles!!!!!! (an adult)
Cappilaries are so small that they are 1 out of 3000 of an inch,in fact it is so small that each blood cell has to travel single file through them!!!!!!!!!!!!!
The bigger your size the slower your heart beats among the animal kingdom; the human heart is about 75 times per minute, and the blue whale heart beats 5 times per minute, but better than that the shrew heart beat is 1000 times per minute!!!!!!!!!!
A red blood cell does not have a nucleus because it needs more space to carry oxygen therefor it cannot divide like many cells and it cannot and cannot grow new cell parts!!!!!!!!!!!!!!!!!!!
If a relationship is ended it can literally break your heart
Even though we referred to blood that is deoxygenated to blue it is actually a dark red color!!!!!!!!!!!!!!!!!!!!!!!
If the heart is able to retrieve oxygen it will keep going, even if it is separated from the rest of the body
http://www.livescience.com/39925-circulatory-system-facts-surprising.html
References
http://en.wikipedia.org/wiki/Group_A_streptococcal_infection
http://sciencenetlinks.com/student-teacher-sheets/organ-systems/
http://www.world-heart-federation.org/cardiovascular-health/heart-disease/different-heart-diseases/#c416
http://www.nlm.nih.gov/medlineplus/ency/article/000163.htm
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