1) AW Re: Topic 6 DQ 1
Blood in our body helps to deliver nutrients and oxygen across the whole body. All our cells need different nutrients and oxygen in order to function. Blood is moved through the body by different systems that can be split again into two. Pulmonary circulation takes place between the heart and the lungs and systemic circulation goes from the heart to the rest of the body. Arteries take unoxygenated blood from the heart to the lungs to be oxygenated. The oxygen rich blood is then taken back to the heart. Arteries then take that oxygenated blood through the body for the cells to take nutrients and oxygen for their own uses. The unoxygenated blood is then taken by veins back to the heart. The whole process is then repeated again to continually bring oxygen to the cells (NCBI, 2021)
NCBI. 2021. How does the blood circulatory system work. Retrieved on 2/22/2021 from https://www.ncbi.nlm.nih.gov/books/NBK27925
2) TM Re: Topic 6 DQ 1
When you think of the circulation of blood it is such a complex and intricate process. The process begins with the heart relaxing and starting with a beat. The blood flow starts from the left side of your heart with both chambers of the heart, the atria, and the ventricle. The atrial chambers receive blood and the ventricle discharges blood. Blood gets pumped through the body oxygenated and nutrient-filled. The bloodd takes away carbon dioxide and waste in the blood. This is a reoccurring cycle.
There are two circulatory systems, systemic and pulmonary. The systemic system delivers to all organs, tissue, and cells with blood. While the pulmonary system circulates to pulmonary vessels and pulmonary body parts.
With the systemic system blood pumps through the left ventricle to the aorta, down to the smallest capillaries with oxygen-rich and nutrient-filled blood. As this rich blood is being dropped off, the blood that has been utilized is then sent back to the right side of the heart to pick up fresh blood again.
With the pulmonary cycle the blood is sent to the tiny capillaries around the grape shape tubules of the lungs and this is where oxygen is delivered to the lungs and carbon dioxide is taken from the lungs, this is another cycle.
The two cycles process at the same time with the lub dub sound that the heart makes.
InformedHealth.org [Internet]. Cologne, Germany: Institute for Quality and Efficiency in Health Care (IQWiG); 2006-. How does the blood circulatory system work? 2010 Mar 12 [Updated 2019 Jan 31]. Available from: https://www.ncbi.nlm.nih.gov/books/NBK279250/
3). JW. 3 postsRe: Topic 6 DQ 1
Hello professor and class,
The body uses the mechanism of circulation to exchange and distribute gases, and nutrients throughout its entirety in order to efficiently function. Deoxygenated blood enters the right atrium from the superior and inferior vena cava. The superior vena cava brings blood from the head, and upper portion of the body and the inferior vena cava brings blood from the lower portion of the body. This blood is then pumped to the right ventricle which pumps this deoxygenated blood to the lungs where gas exchange occurs via the pulmonary arteries. The blood flows through the capillaries in the lungs as carbon dioxide diffuses out which the individual breathes out and the oxygen the person breathes in diffuses into the blood thus it now becomes oxygen rich. This oxygenated blood flows through the pulmonary veins into the left atrium (this is the end of the pulmonary circuit). The blood is then pumped into the left ventricle. After this, the blood is pumped out of the left ventricle through the aorta to the coronary arteries as it goes to the head, arms, limbs and abdominal regions. Within each organ, the arteries lead to arterioles which branch into capillaries where gas exchange occurs. The capillaries lead into venules which lead into veins that transport this now deoxygenated blood from the head and upper body through the superior vena cava and back to the heart. The inferior vena cava sends the deoxygenated blood from the lower body to the heart and the process of systemic circulation happens all over again.
Pulmonary circulation carries deoxygenated blood from the body to the lungs and back to the heart. The pulmonary artery and veins are involved in this circulation. The pulmonary artery also known as the pulmonary trunk, divides into two portions, the left pulmonary artery and the right pulmonary artery. These arteries carry blood to the left and right lung, respectively. Deoxygenated blood is carried to the lungs via the pulmonary arteries where it goes through gas exchange in the alveoli of the lungs (oxygen enters, carbon dioxide exits) and exits as oxygenated blood via the pulmonary veins. Systemic circulation is the system where oxygenated blood is carried throughout the body and the deoxygenated blood is returned to the heart from the body tissues. This is the main difference between the two systems of circulation. Pulmonary circulation includes the pulmonary artery and pulmonary vein whereas systemic circulation includes the inferior and superior vena cava, aorta and other small blood vessels. Pulmonary circulation carries blood to the lungs and releases carbon dioxide while dissolving oxygen in the blood, and systemic circulation carries blood throughout the body providing nutrients and oxygen to the cells in the body in order to carry out their metabolic activities.
Dickey, J. L., Hogan, K. A., Reece, J. B., & Simon, E. J. (2016) Campbell Essential Biology with Physiology, Fifth Edition. Published by Benjamin Cummings. Pearson Education. Retrieved from https://www.gcumedia.com/digital-resources/Pearson/2015/campbell-essential-biology-with-physiology_ebook_5e.php
Lakna (2017, September 10) PEDIAA. Difference Between Pulmonary and Systemic Circulation. Retrieved from https://pediaa.com/difference-between-pulmonary-and-systemic-circulation/#:~:text=Difference%20Between%20Pulmonary%20and%20Systemic%20Circulation%201%20Definition.,Blood.%20…%206%20Function.%20…%207%20Conclusion.%20
4). A. B. postsRe: Topic 6 DQ 1
Systemic carries oxygenated blood from aorta to tissues. Pulmonary carries deoxygenated blood/venous blood to lungs then back to the heart. Pulmonary circulation moves blood between the heart and the lungs. It transports deoxygenated blood to the lungs toabsorb oxygen and release carbon dioxide. The oxygenated blood then flows back to the heart. Systemic circulationmoves blood between the heart and the rest of the body.
1). A.B. 1 postsRe: Topic 6 DQ 2
Because most common first symptom is painful leg cramping that occurs with exercise and is relieved by rest (intermittent claudication). During rest, the muscles need less blood flow, so the pain disappears. It may occur in one or both legs depending on the location of the clogged or narrowed artery doctor suggest that people who’d may have suffer from Peripheral vascular disease should get up and walk around to continue rapid blood circulation. If a prison with PVD doors not walk around after sitting over a long term it can affect all types of other blood vessels. Blood flow is restricted to the tissue because of spasm or narrowing of the vessel.This disease more often affects the blood vessels in the legs. The most common symptom is pain, which becomes worse as the circulation more limited. Restoring blood flow and preventing disease progression is the goal of treatment.
2). JW. 3 postsRe: Topic 6 DQ 2
Hello professor and class,
Blood clots can be dangerous to an individual’s health. A blood clot in the leg called deep vein thrombosis develops when the blood pools in a particular spot due to inactivity and thickens. If the clot travels and reaches the lungs it could cause pulmonary embolism where the clot blocks the flow of blood and thus oxygen. This could lead to tissue damage and even death. Movement and prevention exercises help to avert clots. As you move, the heart pumps blood to the veins and thus muscle activity keeps the blood circulating efficiently throughout the body but when a person is sedentary for a long period of time, a clot may form. Blood circulation within the body keeps the vessels oxygenated. Blood clots in the walls of arteries decrease the inner size of the blood vessel and block off major arteries. Peripheral vascular disease (PVD) occurs due to poor circulation. It can cause narrowing, blockage and spasms in the blood vessels. This disease affects the arteries, veins and lymphatic vessels. PVD could be caused by atherosclerosis which is a buildup of plaques in the vessels which reduces the blood flow within the vessels. This decreases the flow of oxygen and nutrients to the tissue. This is why proper blood flow or circulation within the body is important. Walking around, engaging in sufficient exercise helps to increase blood flow in people who have this disease and also in the legs of those people who are sedentary for long periods of time such as persons on a long plane ride. Blood clots and PVD cause pain in the legs which worsen as circulation becomes more limited.
Centers for Disease Control and Prevention (2020, October 13) Venous Thromboembolism (Blood Clots) Prevent Blood Clots. Retrieved from https://www.cdc.gov/ncbddd/dvt/features/prevent-blood-clots.html
Fit People (2019, June 26) The Benefits of Exercise to Prevent Blood Clots. Retrieved from https://fitpeople.com/health/injury-and-prevention/the-benefits-of-exercise-to-prevent-blood-clots/
Johns Hopkins Medicine (n.d) Health. Peripheral Vascular Disease. Retrieved from https://www.hopkinsmedicine.org/health/conditions-and-diseases/peripheral-vascular-disease
Suszynski, M. (2014, June 12) Everyday Health. Deep Vein Thrombosis. Long Flight? Bed Rest? Easy Exercises Prevent Blood Clots. Retrieved from https://www.everydayhealth.com/news/long-flight-bed-rest-easy-exercises-prevent-blood-clots/
3) A.W. 2 postsRe: Topic 6 DQ 2
The heart pushes blood through the body by contracting. The periphery of the body is far from the heart and needs a little extra push to get through. This is done by moving your arms and leg causing the muscles to contract and pump the blood. When you are on a flight you sit in the cramped position your muscles can’t help to pump the blood. This can lead to clotting in your legs and cause deep vein thrombosis (DVT)(Aubry, 2007). If you have a peripheral vascular disease or other clotting disorder it becomes easier to develop a DVT. Since our body already has issues with moving blood add in in a circumstance that will prevent it further is going to increase the likelihood of a DVT. That is why it is so important for people to get up at leastonce an hour and walk up and down the aisle and get the blood pumping.
Aubry, Allison. 2007. Move around on long flights to prevent blood clots. Retrieved on 2/25/2021 from https://www.npr.org/templates/story/story.php?storyId=12593776#:~:text=Move%20Around%20on%20Long%20Flights%20to%20Prevent%20Blood%20Clots%20%3A%20NPR&text=Move%20Around%20on%20Long%20Flights%20to%20Prevent%20Blood%20Clots%20A,will%20develop%20a%20blood%20clot.
4) TM 3 postsRe: Topic 6 DQ 2
The risk of developing a blood clot while in a high altitude is great especially when you have a condition such as peripheral vascular disease or blood clots. If you have these conditions, it is wise to check with your doctor before taking a long trip via airplane or any means of travel. There are several issues that can be life-threatening. The veins and arteries in the legs are collateral and smaller veins and arteries branch off of the major vessels. Sometimes these vessels get blocked with fats and plagues cause the vessels to have a restriction. People may have different symptoms depending on what condition they may have. There could be pain from low oxygen or swelling. With all these symptoms being in high altitude the air is thin and if you are not able to get up and circulate and move you can develop pain. A blockage or blood clot can lead to different outcomes. When you do take a long flight or a long trip you should not be seated for long times as there Is a high chance for blood clots. Just sitting with no motion can cause this to happen. You have to take precautionary steps when it comes to any cardiovascular disease.
Anna Giorg, A. (2018, September 17). Healthline. Peripheral Vascular Disease. https://www.healthline.com/health/peripheral-vascular-disease
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