the blood vessels‚ which allows them to absorb the pressure emitted from the heart with each beat and to return blood back to the heart‚ usually on an uphill course against the constant pull of gravity. Key point: In differentiating between arteries‚ veins‚ and capillaries‚ emphasize that the structure of each type of vessel is related to the differing amounts of pressure they must each absorb from the heart‚ as well as their respective roles in blood
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old Caucasian female who had a partial obstruction in the carotid artery on the right side for over two years and had a stroke in the right hemisphere 6 months ago. The main common carotid artery splits into the external carotid artery and the internal carotid artery. The external carotid artery supplies blood to the exterior features outside of the skull‚ primarily the exterior of the face and the neck. The internal carotid artery supplies blood to the interior of the skull‚ including the anterior
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through three types of flexible tubes‚ the blood vessels (Fig. 4.1). The arteries channel blood from the heart to all parts of the body needing service. Once there‚ the blood passes through narrow arteries and enters the capillaries‚ which are the narrowest blood vessels. Many substances and some blood cells pass into and out of the blood by moving through the thin porous capillary walls. The blood is then carried through the veins‚ which return the blood to the heart. The passage of blood through the
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developing chronic diseases such as ischaemic heart disease and BHF (Ketata et al.‚ 2012). The patient presents airway obstruction and possible heart complications. Chronic dyspnea on exertion can be linked to many cardiovascular and respiratory problems. Stretch receptors located in the lung’s bronchioles detect changes in lung expansion which causes irritation by certain chemical stimuli such as tobacco from smoking (Barnes et al‚ 2014). As a result‚ this change increases shortness of breath. As he experiences
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vessels and structure There are three types of blood vessel‚ Arteries ‚ veins and capillaries. Each of them have different functions involved in carrying blood around the body . Arteries are blood vessels that transport blood away from the heart‚ veins are blood vessels that transport blood to the heart and Capillaries are extremely small vessels located within the tissues of the body that transport blood from the arteries to the veins. they must be constructed for carrying fluids over long distances
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Include in your explanation the major concepts you learned and any safety concerns associated with the lab. Learning the structural and functional differences among arteries‚ veins‚ and capillaries. Identify the major arteries arising from the aorta through observation and dissection of a preserved specimen. Identify the major veins draining into the superior and inferior vena cava through observation and dissection of a preserved specimen wear approved safety glasses at all times while working
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throughout the body. Arteries carry blood filled with nutrients away from the heart to all parts of the body. The blood is sometimes compared to a river‚ but the arteries are more like a river in reverse. Arteries are thick-walled tubes with a circular covering of yellow‚ elastic fibers‚ which contain a filling of muscle that absorbs the tremendous pressure wave of a heartbeat and slows the blood down. This pressure can be felt in the arm and wrist - it is the pulse. Eventually arteries divide into smaller
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How microscopes have contributed to our understanding of living organisms There are 2 types of microscopes these are; light microscope and electron microscope. Light microscopes use a beam of light however the resolution is lower than the electron microscope so the image is not clear‚ however they can view living organisms. These types of microscopes are used in schools to view simple cellular structures‚ which is good to teach simple biology Mitosis and meiosis can be seen with light microscopes
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Cardiovascular System & Flow of Blood • • • Right Heart and Left Heart Flow of Blood through Heart Components of Vascular System • Arteries – Aorta‚ Large Arteries‚ Small Arteries • • • • • Distributing network Arterioles – Resistance Vessels Capillaries – Exchange Vessels Venules & Small Veins – some exchange‚ capacitance vessels Large Veins and Inferior and Superior Vena Cava – Collecting Vessels returning blood to the heart. Fig 9-1 June 19‚ 2013 3 CV 4 Specialized
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blood flows through the vena cava‚ it then enters the right atrium which gets pumped into the right ventricle which pumps it through the semi-lunar valve and through to the pulmonary artery. The blood flow then goes to the lungs where it is oxygenised‚ the newly oxygenised blood re-enters the heart via the pulmonary vein into the left atrium‚ the blood then goes through the mitral valve into the left ventricle. From here it is pumped by a strong muscle and straight through the aorta and around the body
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