The Circulatory System Education Presentation PDF

Disease of circulatory system Lesson 6 Unit 1 Circulatory system The circulatory system transports blood, nutrients, and oxygen throughout the body.  Main parts of circulatory system Heart Blood Blood vessels:arteries,...

Disease of circulatory system Lesson 6 Unit 1 Circulatory system The circulatory system transports blood, nutrients, and oxygen throughout the body.  Main parts of circulatory system Heart Blood Blood vessels:arteries, veins and capillaries  THE right atrium left atrium HEART It works as a pump to move the blood around the body. right ventricle left ventricle  BLOOD VESSELS These are tubes or channels that carry blood throughout our body. There are three types of blood vessels—veins, arteries and capillaries. Each one differs in size and structure.  BLOOD VESSELS Let’s take a closer look at the three types of blood vessels: It has the thickest wall of all three, allowing it to Arter withstand the high pressure created by the heart. y It has the thinnest wall to allow substances such Capillar as oxygen and sugars to pass through its wall—into y or out of the blood. It is less muscular and stretchy than an artery, Vein so blood moves through it with low pressure. It also has a special valve that helps blood go only one way.  BLOOD VESSELS Each type of blood vessel has a unique role in the circulatory system. Artery Capillary Vein Carries blood Assists in the Carries blood back away from the exchange of towards the heart substances between heart the blood and tissues TIP Remember ‘A’ for ‘artery’ and ‘away’ from the heart!  What Can Go Wrong in the Circulatory System? - Hypertension (High Blood Pressure) - Atherosclerosis (Narrowing of Arteries) Venous Thrombosis (Blood Vessel Blockage). - Angina (Chest Pain from Low Blood Flow) - Heart Failure (Heart Cannot Pump Blood Properly) - Stroke (Poor Blood Flow to the Brain)  Hypertension Hypertension occurs when blood pressure is too high, making the heart work harder. - Risk Factors: Age, family history, overweight, high salt diet, lack of exercise, stress. - If untreated, it can lead to heart attacks, strokes, kidney issues, and vision loss. - Normal BP: 120/80; High BP: 130/80 or above. Hypertension symptoms and signs  Hypertension prevention and treatment 1. Maintain a healthy weight. 2. Eat a low-salt, low-fat diet. 3. Exercise regularly. 4. Medication may be required to lower blood pressure.  Atherosclerosi 1. s builds up in the Atherosclerosis is when plaque arteries, blocking blood flow. 2. Risk Factors: High blood pressure, unhealthy diet, lack of exercise, family history. 3. Can lead to heart attacks (if in the heart) or strokes (if in the brain)  Atherosclerosis Symptoms Chest pain if the blockage is in the heart. Weakness, loss of vision, or difficulty speaking if the blockage is in the brain. Pain in limbs if the blockage is in the arms or legs.  - Maintain a healthy diet and weight. - Exercise regularly. - Medication to lower cholesterol and blood pressure. - Surgery may be needed to remove blockages or create new arteries.  What Can Go Wrong in the Circulatory System? - Hypertension (High Blood Pressure) - Atherosclerosis (Narrowing of Arteries) - Angina (Chest Pain from Low Blood Flow) - Heart Failure (Heart Cannot Pump Blood Properly) - Stroke (Poor Blood Flow to the Brain) Venous Thrombosis (Blood Vessel Blockage). SAMPLE ANSWER LESSON CHECK: body Right Atrium Left Atrium lungs THE Can you explain how blood flows HEART through the heart with a partner, even without the diagram of the Right Left Ventricle Ventricle heart? Shown is a sample diagram of how blood flows through the lungs body heart.  BLOOD It is a special fluid primarily contained within the blood vessels. It has four main components— red blood cells, white blood cells, platelets and plasma.  BLOOD Our blood has four main components: Red Blood Platelets Cells carry oxygen, gather at the site nutrients and of injury and help wastes the clotting process White Blood Cells Plasma fight diseases and straw-coloured protect the body liquid where the from infection other components float in  BLOOD plasma When someone has a blood test, a white blood cells small amount of blood is taken and and platelets kept in a tube for testing. red blood cells To closely examine it, blood undergoes component separation. One common method involves Blood is divided into its spinning it at very high speeds in a components, with the heaviest centrifuge. parts at the bottom.  LESSON CHECK: SICKLE CELL DISEASE Sickle cell disease (SCD) is an inherited blood disorder. People with SCD have red blood cells that become hard and sticky, forming a C- shaped blood cell instead of the healthy disc-shaped one. Considering what you’ve learnt about blood and blood vessels, how does this shape affect blood flow in the circulatory system? SAMPLE ANSWER LESSON CHECK: SICKLE CELL Considering what you’ve learnt about blood DISEASE and blood vessels, how does this shape affect blood flow in the circulatory system? The irregular shape of the sickle-shaped blood cell makes it easy to clog and block the blood flow. This can cause pain and other serious infections.  A RECAP The circulatory system delivers oxygen and nutrients to the body, while also removing wastes. Heart Blood Blood Vessels Muscular organ that has Has four components: Has three types: four chambers plasma, red blood cell, arteries, veins and white blood cell and capillaries Pumps blood around platelets the body Serve as channels for Carries oxygen, nutrients the blood and wastes A DAY IN THE LIFE OF A RED BLOOD CELL Write a story as though you are a red blood cell. Some guide questions you can use are: What do you look like? What is your job? Where are you found? Where do you travel from and to? Try this background for online class. *Please delete this section before downloading. PRESS THESE KEYS while on Present mode! B for blur C for confetti D for a drumroll M for mic drop O for bubbles O for quiet U for unveil 0-9 Any number from 0-9 for a timer