https://www.khanacademy.org/science/up-biology-grade-11-revision-course-full-term/x01ceb15d0be61009:week-2/x01ceb15d0be61009:untitled-599/v/components-of-blood-i 2024-12-12T07:32:22.228364337Z Components of Blood I When you had your blood taken for a test, have you wondered why it looked red? Have you wondered what blood was made of? And why it's so important? Watch the series of videos to answer these questions and more! Nivedhitha Suresh video https://cdn.kastatic.org/ka_thumbnails_cache/c4b985c2-f113-4f55-a9d8-e8bd14044f47_1280_720_base.png Components of Blood I When you had your blood taken for a test, have you wondered why it looked red? Have you wondered what blood was made of? And why it's so important? Watch the series of videos to answer these questions and more! https://cdn.kastatic.org/ka-youtube-converted/kjRTWK7fyaY.mp4/kjRTWK7fyaY.mp4 668 Body Fluids and Circulation https://www.khanacademy.org/science/up-biology-grade-11-revision-course-full-term/x01ceb15d0be61009:week-2/x01ceb15d0be61009:untitled-599/v/components-of-blood-ii 2024-12-12T07:32:22.228364337Z Components of Blood II When you had your blood taken for a test, have you wondered why it looked red? Have you wondered what blood was made of? And why it's so important? Watch the series of videos to answer these questions and more! Nivedhitha Suresh video https://cdn.kastatic.org/ka_thumbnails_cache/9f505644-1542-4beb-bb48-69dece4e0d0f_1280_720_base.png Components of Blood II When you had your blood taken for a test, have you wondered why it looked red? Have you wondered what blood was made of? And why it's so important? Watch the series of videos to answer these questions and more! https://cdn.kastatic.org/ka-youtube-converted/Oh01xDGS2J0.mp4/Oh01xDGS2J0.mp4 426 Body Fluids and Circulation https://www.khanacademy.org/science/up-biology-grade-11-revision-course-full-term/x01ceb15d0be61009:week-2/x01ceb15d0be61009:untitled-599/e/components-of-blood 2023-03-20T22:01:01.198685128Z Components of blood This exercise has questions about the components of blood - plasma, RBCs, WBCs, and platelets. Moumita Sen exercise https://www.khanacademy.org/science/health-and-medicine/circulatory-system/circulatory-system-introduction/v/flow-through-the-heart 2020-09-09T23:28:12Z Flow through the heart Learn how blood flows through the heart, and understand the difference between systemic and pulmonary blood flow. Rishi is a pediatric infectious disease physician and works at Khan Academy. Rishi Desai video https://cdn.kastatic.org/googleusercontent/oZ6EhbCXlLF8nqwCrKPR1Z4ftBWhk54hdKa9fGwBCm5IRu2rqouGgpU9MTWst9rAQJyZW_7WHiSxn0aIX6dVYHZr Flow through the heart Learn how blood flows through the heart, and understand the difference between systemic and pulmonary blood flow. Rishi is a pediatric infectious disease physician and works at Khan Academy. https://cdn.kastatic.org/ka-youtube-converted/7XaftdE_h60.mp4/7XaftdE_h60.mp4 471 Body Fluids and Circulation https://www.khanacademy.org/science/health-and-medicine/circulatory-system/circulatory-system-introduction/v/two-circulations-in-the-body 2020-09-09T23:28:10Z Two circulations in the body Learn the difference between the pulmonary and systemic circulatory systems in the body. Rishi is a pediatric infectious disease physician and works at Khan Academy. Rishi Desai video https://cdn.kastatic.org/googleusercontent/mpTwNM-GiJyQmDRIXf1kyOaQYokmQ3zJNvWyVnyXBlxHGcx-J_tn8DAvatBISnGDfBkFB1u9DT69gvjWMjLQ2R1A Two circulations in the body Learn the difference between the pulmonary and systemic circulatory systems in the body. Rishi is a pediatric infectious disease physician and works at Khan Academy. https://cdn.kastatic.org/ka-youtube-converted/K57qjYYjgIY.mp4/K57qjYYjgIY.mp4 745 Body Fluids and Circulation https://www.khanacademy.org/science/in-in-class-10-biology/in-in-life-processes/in-in-transportation-in-human-beings/e/transportation-in-human-beings 2026-03-05T08:50:45.400692349Z Transportation in human beings Let's practice some questions related to transportation in human beings saiyem exercise https://www.khanacademy.org/science/up-biology-grade-11-revision-course-full-term/x01ceb15d0be61009:week-2/x01ceb15d0be61009:untitled-599/v/the-nodal-tissue-of-the-heart 2023-04-24T21:01:19.859314843Z The nodal tissue of the heart Let's understand how electrical impulses run through our heart - through the nodal tissues. Khadijatul Qubra video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw The nodal tissue of the heart Let's understand how electrical impulses run through our heart - through the nodal tissues. https://cdn.kastatic.org/ka-youtube-converted/5uUSNnkUsHI.mp4/5uUSNnkUsHI.mp4 451 Body Fluids and Circulation https://www.khanacademy.org/science/health-and-medicine/circulatory-system/circulatory-system-introduction/v/lub-dub 2020-09-09T11:23:52Z Lub dub Ever wonder why the heart sounds the way that it does? Opening and closing of heart valves makes the heart rhythm come alive with its lub dub beats... Rishi is a pediatric infectious disease physician and works at Khan Academy. Rishi Desai video https://cdn.kastatic.org/googleusercontent/H-eK4hgL6f_a6509l4oPFD4JwZEzNoXexVyXLC19Us8P2YM3KpmzOHgFXDRY4fqToIrrhPqeIocwUN30mLsYRJjJ3g Lub dub Ever wonder why the heart sounds the way that it does? Opening and closing of heart valves makes the heart rhythm come alive with its lub dub beats... Rishi is a pediatric infectious disease physician and works at Khan Academy. https://cdn.kastatic.org/ka-youtube-converted/-4kGMI-qQ3I.mp4/-4kGMI-qQ3I.mp4 590 Body Fluids and Circulation https://www.khanacademy.org/science/up-biology-grade-11-revision-course-full-term/x01ceb15d0be61009:week-2/x01ceb15d0be61009:untitled-599/v/regulation-of-cardiac-activity 2023-04-24T21:01:19.859314843Z Regulation of cardiac activity Let's find out which part of our body can increase or decrease our heart rate. Khadijatul Qubra video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Regulation of cardiac activity Let's find out which part of our body can increase or decrease our heart rate. https://cdn.kastatic.org/ka-youtube-converted/mzz2bz4Y5Mo.mp4/mzz2bz4Y5Mo.mp4 498 Body Fluids and Circulation https://www.khanacademy.org/science/up-biology-grade-11-revision-course-full-term/x01ceb15d0be61009:week-2/x01ceb15d0be61009:untitled-599/e/cardiac-cycle-and-ecg 2026-04-07T23:55:07.30621384Z Cardiac cycle and ECG This exercise is on the nodal tissue of the heart, systole and diastole, and ECG. Moumita Sen exercise https://www.khanacademy.org/science/up-biology-grade-11-revision-course-full-term/x01ceb15d0be61009:week-2/x01ceb15d0be61009:untitled-599/e/regulation-and-disorders-of-the-circulatory-system 2026-01-02T03:26:47.797410698Z Regulation and disorders of the circulatory system This exercise deals with the regulation of cardiac activity, high blood pressure, coronary artery disease, heart attack, cardiac arrest, heart failure, and angina. Moumita Sen exercise