Anatomy Series: Cardio & Circulatory System

Anatomy Series: Cardio & Circulatory System

Our Anatomy Series will focus on the foundations of human anatomy. Our videos are designed for high school-level students. Lecture instructors include UIC Urban Health Program pre-health students and UIC College of Medicine students.

Music: Anythings - Chris James

ACCESS YouTube:
https://www.youtube.com/watch?v=Df9dX2deGhg

EMBEDDED VIDEOS:
Circulatory System - BrainPOP
https://www.youtube.com/watch?time_continue=1&v=pzCplJpAwn4&feature=emb_title

Heart - BrainPOP
https://www.youtube.com/watch?v=ov_Z3qCYUa8&feature=emb_title

The Heart, Part 1 - Under Pressure: Crash Course A&P #25
https://www.youtube.com/watch?v=X9ZZ6tcxArI&feature=emb_title

The Heart, Part 2 - Heart Throbs: Crash Course A&P #26
https://www.youtube.com/watch?time_continue=1&v=FLBMwcvOaEo&feature=emb_title

Blood Vessels, Part 1 - Form and Function: Crash Course A&P #27
https://www.youtube.com/watch?v=v43ej5lCeBo&feature=emb_title

Blood Vessels, Part 2: Crash Course A&P #28
https://www.youtube.com/watch?v=ZVklPwGALpI&feature=emb_title

Heart Disease and COVID-19
https://www.youtube.com/watch?time_continue=1&v=fsgpfowpIrg&feature=emb_title

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UIC Urban Health Club

May 28, 2020
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Transcript

  1. 2.

    UIC Urban Health Club The Cardio & Circulatory System Anatomy

    Series: Cardio & Circulatory System - Anatomy & Physiology Review & Potential Effects of COVID-19
  2. 4.

    UIC Urban Health Club Part I: Circulatory System Source: Khan

    Academy “The circulatory system review” Network consisting of blood, blood vessels, and the heart. Supplies tissues in the body with oxygen and other nutrients, transports hormones, and removes unnecessary waste products. • Pulmonary circuit provides blood flow between the heart and lungs. • Systemic circuit allows blood to flow to and from the rest of the body. • Coronary circuit strictly provides blood to the heart.
  3. 5.

    UIC Urban Health Club Part I: Circulatory System Source: Khan

    Academy The circulatory system review Blood from the heart is pumped throughout the body using blood vessels. Arteries carry blood away from the heart and into capillaries, providing oxygen (and other nutrients) to tissue and cells. Once oxygen is removed, the blood travels back to the lungs, where it is reoxygenated and returned by veins to the heart.
  4. 6.

    UIC Urban Health Club Part I: Circulatory System Systemic Circulation

    From the left side of the heart oxygenated blood goes to the entire body then enters back to the right side of the heart Pulmonary Circulation From the right side of the heart, to the lungs, then to the left side of the heart! What happens to the blood as it goes through the Lungs? Image Credit: Infogram - Cardiovascular System by Emma Finucane
  5. 8.

    UIC Urban Health Club Part II: Heart Structure - Anterior

    View Image Credit: Contemporary Health Issues Internal Structure of the Heart
  6. 9.

    UIC Urban Health Club Part II: Heart Structure - Posterior

    View Image Credit: Contemporary Health Issues Internal Structure of the Heart
  7. 10.

    UIC Urban Health Club Components of the Heart ◦ 4

    Chambers ▪ 2 Atria ▪ 2 Ventricles ◦ 4 Valves ▪ Valves are meant to prevent backflow of blood into previous chamber ◦ Arteries & Veins ▪ Superior & Inferior Vena Cava (SVC/IVC) ▪ Pulmonary Artery & Veins ▪ Aorta Part II: Heart Structure Image Credit: https://healthblog.uofmhealth.org/sites/consumer/files/2020-01/heart_pumping.gif
  8. 11.

    UIC Urban Health Club Part II: Heart Function Source: Khan

    Academy The circulatory system review • The heart is made of specialized cardiac muscle tissue that allows it to act as a pump within the circulatory system.
  9. 13.

    UIC Urban Health Club LUNGS: Pulmonary arteries (in blue) carry

    deoxygenated blood from the heart into the lungs. THROUGHOUT BODY: • Arteries (in red) deliver oxygenated blood and nutrients to all of the body’s tissues. ◦ Aorta is the large artery leaving the heart. • Veins (in blue) return oxygen-poor blood back to the heart. ◦ Superior vena cava is the large vein that brings blood from the head and arms to the heart. ◦ Inferior vena cava brings blood from the abdomen and legs into the heart Part III: Arteries vs Veins Source: Cleveland Clinic Blood Vessels Illustrations
  10. 14.

    UIC Urban Health Club Coronary Arteries Arteries that stem off

    Aortic Valve and supply the Heart w/ Oxygen 2 Main Coronary Arteries: • Right coronary artery (RCA) • Left coronary artery (LCA) ◦ Left circumflex artery (LCx) ◦ Left anterior descending artery (LAD) Blockage of theses Vessels leads to Heart Attack (Myocardial Infarction) and Chest Pain upon exertion (Angina) Part III: Arteries vs Veins Source: Johns Hopkins Anatomy and Function of the Coronary Arteries
  11. 16.

    UIC Urban Health Club Part III: COVID-19 & The Heart

    BUT FIRST, let’s review the basics of COVID-19... • Causes mild to serious respiratory illness in people • Signs & symptoms include fever, shortness of breath, fatigue, cough, sore throat, loss of taste or smell • People who are asymptomatic can also be infectious • Risk factors include older >65 years of age, obesity & existing medical conditions (e.g. diabetes & hypertension) • Transmission is via respiratory droplets • There is no specific treatment • Diagnostic tests (polymerase chain reaction - PCR) are done to test people with signs & symptoms • Antibody tests show that you were infected with the virus in the past Source: COVID-19 Contact Tracing by Johns Hopkins University
  12. 17.

    UIC Urban Health Club Part III: COVID-19 & The Heart

    COVID-19 poses a greater risk to people who have underlying conditions, including: •Coronary heart disease •Diabetes •High blood pressure •Previous stroke People in those groups may be at higher risk of catching COVID-19. They’re also more likely to develop severe symptoms if they get sick. Source: Cleveland Clinic What Heart Patients Need to Know About COVID-19 | Image source: Medscape Cardiac Injury Common in COVID-19, Predicts Mortality
  13. 18.

    UIC Urban Health Club Part III: COVID-19 & The Heart

    Source: The Harvard Gazette Coronavirus and the heart COVID-19 has now recently been shown to provoke cardiac injury • Respiratory stress can lead to decreased oxygen supply and ischemic heart injury if the heart does not receive enough oxygen ◦ Fever and inflammation accelerate heart rate and increase metabolic demands on many organs, including the heart. ◦ This ischemic heart injury mimics cardiac injury from heart attacks, and does not require the fatty, calcified coronary artery blockages known to cause them. • People with preexisting heart disease are at a greater risk for severe cardiovascular and respiratory complications from COVID-19. • People with previously undiagnosed heart disease may start having cardiac symptoms from additional stress the infection places on the heart