sara zawadka
Instructor’s Name
22 February 2018
the circulatory system speech the intro
the circulatory system is one of the most important systems in the body, there is also the respiratory, digestive, excretory, nervous and endocrine system, as they all support each other keeping the human body nourished and healthy. however the circulatory is one of the main organ systems in the body as it ensures that the exchange of substances between tissues of the body and the external and transport of nutrients of different substances from one organ to another such as amino acids ( which are building blocks for protein ) and electrolytes as well as oxygen, carbon dioxide, hormones and blood cells
the heart the heart which is typically
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Oxygenated blood is pumped away from the heart to the rest of the body, while deoxygenated blood is pumped to the lungs where it is deoxygenated before returning to the heart.
the
The aorta is the largest artery in the body. The aorta begins at the top of the left ventricle, the heart's muscular pumping chamber. The heart pumps blood from the left ventricle into the aorta through the aortic valve. Three leaflets on the aortic valve open and close with each heartbeat to allow one-way flow of blood.
The aorta is a tube about a foot long and just over an inch in diameter. The aorta is divided into four sections:
• The ascending aorta rises up from the heart and is about 2 inches long.
The coronary arteries branch off the ascending aorta to supply the heart with blood.
• The aortic arch curves over the heart, giving rise to branches that bring blood to the head, neck, and arms.
• The descending thoracic aorta travels down through the chest. Its small branches supply blood to the ribs and some chest structures.
• The abdominal aorta begins at the diaphragm, splitting to become the paired iliac arteries in the lower abdomen. Most of the major organs receive blood from branches of the abdominal
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In developed countries, the two leading causes of death, myocardial infarction (heart attack), and stroke may each directly result from an arterial system that has been slowly and progressively compromised by years of deterioration.
An artery is a vessel that carries blood away from the heart and toward other tissues and organs. Arteries are part of the circulatory system, which delivers oxygen and nutrients to every cell in the body.
artery walls have 4 layers in the centre there is the basement membrane then tunica intima and tunica media and finally the tunica internal
how are the heart and the lungs connected
The veins also are major blood vessels connected to your heart. The pulmonary veins carry oxygen-rich blood from the lungs to the left side of the heart so it can be pumped to the body. The superior and inferior vena cavae are large veins that carry oxygen-poor blood from the body back to the heart.
so step by step ill explain how this all comes together
Step 1
Blood enters right atrium from superior and inferior vena cavae.
Step 2
Blood in right atrium flows through right AV valve (tricuspid) into the right
Next, they traced the external jugular vein and its tributary veins on the surface of the right side of the neck and head. On the left side where the sternomastoid was cut, the students then located the deeper vessels running alongside the trachea, internal jugular vein, and the common carotid artery. In the abdominal cavity, the groups then exposed and studied the hepatic portal vein and its tributaries. They then identified the tributaries of the post cava, the renal, adrenolumbar, iliolumbar, iliac, and caudal vessels. The arteries of the gonads then came off the abdominal aorta cranial where the spermatic arteries were found.
The Pintails heart is like a mammals consisting of four chambers, two ventricles and two atria. The left ventricle pumps blood to all major organs in the body and throughout the rest, only excluding the lungs. This causes the left ventricle to be larger and more muscular. The lungs are fed blood from the right ventricle, which is the only the only function of that ventricle. The oxygenated blood coming from the lungs is fully separated from the oxygenated blood coming from other parts of the body.
Arteries deliver oxygenated blood to the capillaries, where the exchange of oxygen and carbon dioxide takes place. An artery's muscle helps it expand and contract in rhythm with the heart beating to keep blood moving through the system. Capillaries connect veins and arteries to exchange oxygen and carbon dioxide. Thin and weak, capillaries are only as thick as one epithelial cell. Blood passes through capillaries one cell at a time, single file.
The lung tissues may develop a pneumothorax. This causes the lungs to collapse by letting air escape into the chest cavity. This disease may affect the heart through aortic dilation. The aorta is a blood vessel that is responsible for transporting blood from the heart to the body. In aortic dilation, the aorta may overstretch or become weak.
Normally, low-oxygen blood entering the right side of the heart stays on the right side, and subsequently oxygen-rich blood stays on the left side of the heart, where it is then pumped to the body and tissues. When a defect or "hole" is present between the atria (or upper chambers of heart), some oxygen-rich blood leaks back to the right side of the heart. It then goes back to the lungs even though it is already rich enough in oxygen. Because of this, there is a significant increase in the blood that goes to the lungs overall. Atrial septal defects can
The structure of arteries Arteries have thick muscular walls and a small lumen passage. According to L. Tucker they are constructed with three layers: • A fibrous outer layer • A middle layer of muscle and elastic tissue • A lining made of squamous epithelial tissue The epithelial lining has a
Heart, lungs and the Rest of You By: Olivia Abel 1.Explain how the blood flows throughout your lungs, heart and the rest of your body. Heart: Your left and right side of your heart work together to pump blood to and throughout your body which is separated by muscular tissue called the septum. In the right side blood enters through two large vein which are the inferior and superior vena cava, emptying poor oxygen blood from the body to the right reticulum. When the left side enters from the pulmonary veins and empties oxygen rich blood from the lungs into the aorta going throughout the body.
Pseudoaneurysm A pseudoaneurysm happens when an artery is injured and blood leaks out to form a sac-like bulge. The bulge can break open, causing bleeding in the nearby tissues. CAUSES The most common cause of this condition is a procedure such as an angiogram in which a thin tube (catheter) is inserted into an artery. After an angiogram, the insertion site on the artery should close back up all the way.
Right ventricle pumping the deoxygenated blood through the pulmonary valve and artery to the lungs. But left ventricle pumping oxygenated blood through the aorta and valve into the circulation. The aorta is main artery of the body and it is top of heart which carries the blood away from the body. The coronary artery supply oxygen-rich blood to the heart muscles. Pulmonary veins are large vessels that carrying oxygenated blood from the lungs to the left atrium which it is draining.
Vesalius had observed, by dissection, that there were no pores in the septum of the heart. This meant that direct transfer of blood was not possible. Harvey’s explanation for how blood was transferred from the right ventricle to the left ventricle was that it went through the lungs via the pulmonary arteries and returned through veins to the left auricle, and subsequently to the left ventricle. Once again this description was a simplified explanation of flow in line with his observations and those of Vesalius and
The left subclavian artery branches directly from the aorta, the largest artery in the body. The aorta curves above the heart before running down the front of the backbone. “The brachiocephalic artery, also known as the brachiocephalic trunk or innominate artery, is much shorter than the aortic arch and splits into two to form the right subclavian artery and the right common carotid
Myocardial Infarction which is another word for Heart-attack. When you have an heart-attack your blood is not getting to your heart's muscle. This means your arteries are clogged. Blood is pumped through your arteries to all of the parts in your body. If you have a heart condition you shouldn't smoke, you should diet and exercise, you should watch your Blood Pressure if you have to take medication for your Blood Pressure make sure you take the prescribed medication.
Furthermore, left side of the heart was still thicker than the right side of the heart. Figure3: Internal part of right side of the heart During the experiment, a scissors was used to cut the heart through the side of pulmonary artery alongside anterior interventricular artery; the cutting continued down into the wall of right ventricle. The anterior interventricular artery, which is the direct continuation of the left coronary artery descends into anterior interventricular groove.
The correct side of the heart, including the correct chamber and ventricle, gathers and pumps blood to the lungs through the pneumonic conduits. The lungs revive the blood with another supply of oxygen. The lungs additionally inhale out carbon dioxide, a waste item. Oxygen-rich blood then enters the left half of the heart, including the left chamber and ventricle.
Although the human heart is the first organ that starts development, it takes several stages to be formed (figure1): • First stage: Formation of the primitive heart tube: That is done after the fusion of endocardial