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INTRODUCTION:
The heart is a spectacular muscular organ that beats every second, of every day. It is positioned behind the ribcage and between the lungs. It tilts slightly to the left. It also supplies your body with what it needs to live, fresh oxygenated blood.
Blood that is rich in oxygen appears red. Blood that is poor in oxygen appears blue.
Arteries are tough, elastic tubes that carry blood away from the heart. Veins carry the blood to the heart.
The circulatory system is made up of the vessels and the muscles that help and control the flow of the blood. This process is called circulation.
THE HEART:
The heart is the most vital organ in the circulatory system. It is composed of 4 main sections: the right and left ventricle and the right and left atrium. The heart acts like a pump that forces the blood through an interconnecting system of vessels which eventually return to the heart. So this is your heart, your ticker, without it you wouldn't be here. It supplies your body with what it needs to live. You notice the heart in the picture above is two different colors: red and blue. The red is oxygen enriched blood from the lungs and the blue is oxygen deficient blood which has returned from the body. The heart is the pump that keeps this transport system moving.
The structure of the heart is divided into four main sections the left and right atrium and the left and right ventricle. The blood enters the heart from its long journey around the body through the superior and inferior vena cava into the right atrium. This blood has very little if any oxygen. Then it passes by the tricuspid valve into the right ventricle. After the right ventricle contracts, the blood is forced past the pulmonary semilunar (crescent shaped) valve, and into the pulmonary trunk which is an artery. The pulmonary trunk splits into the right and left pulmonary artery where the still oxygen deficient blood travels through the lungs. The blood becomes enriched with oxygen and travels back toward the heart. The blood enters the heart via the right and left pulmonary vein which come directly from the lungs. The blood then enters the left atrium. The bicuspid valve opens up and the blood falls into the left ventricle. The ventricle contracts and the blood goes rushing passed the aortic semilunar valve and into the aorta which is the largest artery in the body. Now the blood is on its way back to the body.
The heart pumps oxygen into the blood and collects carbon dioxide from it to be expelled through the lungs.
To see how big your heart is, make a fist. Your heart beats about 60-100 times per minute. Your heart beats every second, of every day. In one year your heart beats more than 30,000,000 times. In an average lifetime a heart will beat over 2,000,000,000 times. Our heart never stops for rest or repair. The heart weighs about 10 ounces, about as much as one of your sneakers. It is located in the middle of your chest tilted slightly to the left.
BLOOD:
The blood is the transport system by which oxygen and nutrients reach the body's cells, and waste materials are carried away.
Blood that is rich in oxygen appears red.
Blood that is poor in oxygen appears blue.
Blood is that sticky, red fluid that circulates throughout our bodies in veins and arteries.
Red blood cells carry oxygen from the lungs to all the cells of the body.
White blood cells are like soldiers protecting the body.
BLOOD VESSELS:
Blood leaves the left side of the heart and travels through arteries, which gradually divide into capillaries. In the capillaries, food and oxygen are released to the body cells, and carbon dioxide and other waste products are returned to the bloodstream.
Veins and Arteries
Arteries are tough, elastic tubes that carry blood away from the heart. As the arteries move away from the heart, they divide into smaller vessels. The largest arteries are about as thick as a thumb. The smallest arteries are thinner than hair. These thinner arteries are called arterioles. Arteries carry bright red blood! The color comes from the oxygen that it carries.
Veins carry the blood to the heart. The smallest veins, also called venules, are very thin. They join larger veins that open into the heart. The veins carry dark red blood that doesn't have much oxygen. Veins have thin walls. They don't need to be as strong as the arteries because as blood is returned to the heart, it is under less pressure.
Blood Vessels
The blood vessles are an network of interconecting veins and arteries and their sub catagories. They provide the pathway in which blood travles. The catagories from largest to smallest and back to largest are as follows:
Aorta Arteries Arterioles
Capillaries
Venules Veins Vena Cava
These are the different kinds of vessles in the body.
The AORTA is the largest artery in the body. It pertrudes out of the top of the left vetricle of the heart.
The ARTERIES are blood vessels which carry blood blood away from the heart. Usually the blood in arteries is deoxygenated except for in the pulmonary trunk. They have an elastic wall and their cell walls are thicker than veins. Arteries' walls are divided into three layers: the endothlium which is the innermost layer, see if you can guess the name of the middle layer... if you guesed the Middle layer then you are correct, it is a thick layer of muscle tissue. Alright go two for two; see if you can guess the name of the outer layer... that's right The Outer layer, and it is a tough elastic covering. As the arteries progressively get smaller and smaller they become called ARTERIOLES.
The CAPILLARIES are the smallest of the blood vessels. It is in them which gas exchanges take place. The capilaries are the bridge from the arterioles to the venules. The membrane of capilaries is very thin and permeable.
The VENULES are microscopic vessels that continue from the capillaries to merge to form veins.
ARTERIES are vessels that carry blood away from the heart.
VEINS are vessels that carry blood back to the heart.
PATH OF CIRCULATION:
Blood leaves the left side of the heart and travels through arteries which gradually divide into capillaries. The blood then travels in veins back to the right side of the heart, where it is pumped directly to the lungs. In the lungs, carbon dioxide is exchanged for oxygen, and this renewed blood flows back to the left side of the heart, and the whole process begins again.
The majors parts of the circulatory system are the heart, arteries and veins. The heart pumps blood to the arteries. The arteries take the oxygenated blood to the muscles. The veins take blood back to the heart, which then releases carbon dioxide in the lungs
How the Blood Gets Around the Body
The circulatory system is made up of the vessels and the muscles that help and control the flow of the blood around the body. This process is called circulation. The main parts of the system are the heart, arteries, capillaries and veins.
As blood begins to circulate, it leaves the heart from the left ventricle and goes into the aorta. The aorta is the largest artery in the body. The blood leaving the aorta is full of oxygen. This is important for the cells in the brain and the body to do their work. The oxygen rich blood travels throughout the body in its system of arteries into the smallest arterioles.
On its way back to the heart, the blood travels through a system of veins. As it reaches the lungs, the carbon dioxide (a waste product) is removed from the blood and replace with fresh oxygen that we have inhaled through the lungs.
The circulatory system also known as the cardiovascular system is composed of the heart and blood vessels. Its function is to transport blood which contains oxygen and nutrients to all parts of the body. Also it carries cellular wastes away to be filltered out of the body.
The cardiovascular system includes the heart and the blood vessels, and the respiratory system contains those organs which are responsible for carrying oxygen from the air to the blood stream and expelling the waste product of carbon dioxide.
Blood CIRCULATES--circles--all around your body in about one or two minutes.
Inside the heart are four hollow chambers. Each chamber is a little pump. The pumping pushes blood all around your body.
MISCELLANEOUS:
The circulatory system is like a water system because the pipes are like the veins and arteries and the water plant is like the heart.
WORDS TO HELP YOU:
Aorta - largest artery of the body
Arteries - tough elastic tubes that take the blood away from the heart
Arterioles - microscopic vessels that merge into capillaries from arteries
Bicuspid valve - a cardiac valve consisting of two triangular flaps
Blood - sticky red fluid that circulates throughout our bodies in veins and arteries
Capillaries - the smallest of the blood vessels
Carbon dioxide - a waste product
Cardiovascular system - the system of our body having to do with the heart and blood vessels
Circulation - the movement of blood, through the vessels of the body caused by the pumping of the heart.
Circulatory system -system of blood, blood vessels and lymphatics and heart concerning the circulation of the blood and lymph
Corpuscles - a minute particle, a living cell. One red blood cell or one white blood cell
Heart - The pump and the most efficient organ in the body as it pumps it circulates the blood
*** Left atrium - the chamber in the heart that receives blood from the veins and forces it into the ventricles
*** Left ventricle - a chamber of the heart which receives blood from the corresponding atrium and from which blood is forced into the arteries
Lungs - thoracic organs which make up the basic respiratory organ of air breathing vertebrate
Organ - body parts performing a function consisting of cells and tissues
Oxygen - a colorless tasteless odorless gas that every cell in your body needs to survive
Platelets - one of the minute disks of vertebrate blood that assists in blood clotting.
Pulse - your heart beat felt by your fingers at your neck or wrist
Red blood Cells - carry oxygen from the lungs to all the cells of the body.
*** Right atrium - - the chamber in the heart that receives blood from the veins and forces it into the ventricles
*** Right ventricle - the chamber in the heart that receives blood from the veins and forces it into the ventricles
Semilunar valve - crescent shaped valve
Septum - the muscular wall separating the chambers of the heart
Ticker - a nickname or slang word for heart.
Tricuspid valve - a cardiac valve consisting three triangular valves
Veins - are blood vessels, which carry blood back to the heart.
Vena Cava - the largest vein.
Venules - microscopic vessels that continue from the capillaries, merge to form veins.
Vessels - a network of veins and arteries
White blood cells - are like soldiers protecting the body.
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The circulatory system works with what other system to get nutrients to all body parts?
The circulatory system works with digestive system to circulate the nutrients to all the body parts. The nutrients are digested and absorbed by the digestive system. The circulatory system circulates the nutrients throughout the body.
What statement accurately compares cells in the human circulatory system to cells in the human nervas system?
Cells in the human circulatory system are responsible for the transportation of oxygen, nutrients, and waste products throughout the body via blood, while cells in the human nervous system transmit electrical impulses to enable communication between different parts of the body. Both systems play crucial roles in maintaining homeostasis and overall function of the body, but they differ in their primary function and mechanism of communication.
Parts of circulatory system?
heart,blood,blood vessel
Which body system distribute nutrients to other parts of the body?
The circulatory system, specifically the blood vessels, is responsible for distributing nutrients to other parts of the body. Nutrients are transported in the bloodstream to various tissues and organs where they are needed for cellular functions.
What the four major parts of the circulatory system?
The four major parts of the circulatory system are the heart, blood vessels (arteries, veins, and capillaries), blood, and lymphatic system. The heart pumps blood throughout the body, the blood vessels transport blood to and from the heart, the blood carries essential nutrients and gases, and the lymphatic system helps maintain fluid balance and immunity.
What parts make circulatory system?
The three major parts of the circulatory system are the heart, the blood, and the blood vessels.
What are the major parts of circulatory?
the circulatory system preforms many vital functions. it plays an important role in respiration. the circulatory system is also important in nutrition, in the removal of wastes and poisons, and in several other body processes.
Describe the three major parts of the circulatory system?
there are a red color.
Circulatory major organs?
The major organ of the circulatory system is the heart. The three parts that are involved with the circulatory system are the blood, the heart, and the vessels.
What is the 3 major parts of the circulatory system?
heart blood blood bessels
What one of the three major parts of-circulatory system can be replaced by surgery?
Heart
What are the body parts of the arteries?
The circulatory system
Identify and interpret the functions of the circulatory system?
The function of the circulatory system is to distribute blood throughout the body. Through the circulatory system, the blood delivers oxygen, nutrients, antibodies, and heat to all areas of the body.
Which of the three major parts of the circulatory system can now ba replaced by surgery?
heart
What major parts of the body are involved in the circulatory system?
Heart, blood and blood vessels
What are the major parts of your circulatory system aside from heart?
blood,arteries,veins,capillaries
Major organs in the circulatory system?
THE ANSWER IS THE HEARTand the veins and the googleGeeves would like to suggest that there are three essential aspects to the circulatory system: Heart, lungs, and brain. Without any one of these organs the circulatory system would cease to function.
