Anatomy & Physiology

Hank tries not to stress you out too much as he delves into the functions and terminology of your sympathetic nervous system. Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: https://apple.co/3d4eyZo Download it here for Android Devices: https://bit.ly/2SrDulJ Chapters: Introduction: Physiology of Stress 00:00 How Signals Travel to Effectors 1:48 Hormones & Neurotransmitters Communicate Stress 2:15 Preganglionic Fibers Release Acetylcholine (ACh) 3:42 Postganglionic Fibers Release Norepinephrine 4:34 Adrenal Glands Release Norepinephrine and Epinephrine as Hormones 5:10 Neurotransmitters vs. Hormones 6:01 How Norepinephrine Works: Alpha and Beta Receptors 6:29 Review 9:29 Credits 10:18 *** Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Simun Niclasen, Brad Wardell, Roger C. Rocha, Jan

Hank tries not to stress you out too much as he delves into the functions and terminology of your sympathetic nervous system. Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: https://apple.co/3d4eyZo Download it here for Android Devices: https://bit.ly/2SrDulJ Chapters: Introduction: Physiology of Stress 00:00 How Signals Travel to Effectors 1:48 Hormones & Neurotransmitters Communicate Stress 2:15 Preganglionic Fibers Release Acetylcholine (ACh) 3:42 Postganglionic Fibers Release Norepinephrine 4:34 Adrenal Glands Release Norepinephrine and Epinephrine as Hormones 5:10 Neurotransmitters vs. Hormones 6:01 How Norepinephrine Works: Alpha and Beta Receptors 6:29 Review 9:29 Credits 10:18 *** Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Simun Niclasen, Brad Wardell, Roger C. Rocha, Jan

Hank tries not to stress you out too much as he delves into the functions and terminology of your sympathetic nervous system. Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: https://apple.co/3d4eyZo Download it here for Android Devices: https://bit.ly/2SrDulJ Chapters: Introduction: Physiology of Stress 00:00 How Signals Travel to Effectors 1:48 Hormones & Neurotransmitters Communicate Stress 2:15 Preganglionic Fibers Release Acetylcholine (ACh) 3:42 Postganglionic Fibers Release Norepinephrine 4:34 Adrenal Glands Release Norepinephrine and Epinephrine as Hormones 5:10 Neurotransmitters vs. Hormones 6:01 How Norepinephrine Works: Alpha and Beta Receptors 6:29 Review 9:29 Credits 10:18 *** Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Simun Niclasen, Brad Wardell, Roger C. Rocha, Jan

Hank tries not to stress you out too much as he delves into the functions and terminology of your sympathetic nervous system. Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: https://apple.co/3d4eyZo Download it here for Android Devices: https://bit.ly/2SrDulJ Chapters: Introduction: Physiology of Stress 00:00 How Signals Travel to Effectors 1:48 Hormones & Neurotransmitters Communicate Stress 2:15 Preganglionic Fibers Release Acetylcholine (ACh) 3:42 Postganglionic Fibers Release Norepinephrine 4:34 Adrenal Glands Release Norepinephrine and Epinephrine as Hormones 5:10 Neurotransmitters vs. Hormones 6:01 How Norepinephrine Works: Alpha and Beta Receptors 6:29 Review 9:29 Credits 10:18 *** Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Simun Niclasen, Brad Wardell, Roger C. Rocha, Jan

In the penultimate episode of Crash Course Anatomy & Physiology, Hank explains your adaptive immune system. The adaptive immune system's humoral response guards extracellular terrain against pathogens. Hank also explains B cells, antibodies, and how vaccines work. Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: https://apple.co/3d4eyZo Download it here for Android Devices: https://bit.ly/2SrDulJ Chapters: Introduction: Adaptive Immune Responses 00:00 How B Cells Identify Antigens 2:14 B Cells Become Effector Cells & Memory Cells 4:05 How Antibodies Fight Antigens 5:22 Active and Passive Humoral Immunity 6:03 How Vaccines Work 6:27 Review 8:30 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever

In the penultimate episode of Crash Course Anatomy & Physiology, Hank explains your adaptive immune system. The adaptive immune system's humoral response guards extracellular terrain against pathogens. Hank also explains B cells, antibodies, and how vaccines work. Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: https://apple.co/3d4eyZo Download it here for Android Devices: https://bit.ly/2SrDulJ Chapters: Introduction: Adaptive Immune Responses 00:00 How B Cells Identify Antigens 2:14 B Cells Become Effector Cells & Memory Cells 4:05 How Antibodies Fight Antigens 5:22 Active and Passive Humoral Immunity 6:03 How Vaccines Work 6:27 Review 8:30 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever

In the penultimate episode of Crash Course Anatomy & Physiology, Hank explains your adaptive immune system. The adaptive immune system's humoral response guards extracellular terrain against pathogens. Hank also explains B cells, antibodies, and how vaccines work. Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: https://apple.co/3d4eyZo Download it here for Android Devices: https://bit.ly/2SrDulJ Chapters: Introduction: Adaptive Immune Responses 00:00 How B Cells Identify Antigens 2:14 B Cells Become Effector Cells & Memory Cells 4:05 How Antibodies Fight Antigens 5:22 Active and Passive Humoral Immunity 6:03 How Vaccines Work 6:27 Review 8:30 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever

In the penultimate episode of Crash Course Anatomy & Physiology, Hank explains your adaptive immune system. The adaptive immune system's humoral response guards extracellular terrain against pathogens. Hank also explains B cells, antibodies, and how vaccines work. Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: https://apple.co/3d4eyZo Download it here for Android Devices: https://bit.ly/2SrDulJ Chapters: Introduction: Adaptive Immune Responses 00:00 How B Cells Identify Antigens 2:14 B Cells Become Effector Cells & Memory Cells 4:05 How Antibodies Fight Antigens 5:22 Active and Passive Humoral Immunity 6:03 How Vaccines Work 6:27 Review 8:30 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever

Welcome to Crash Course Office Hours! Is the heart an organ? How does the nervous system work? In this livestream, Hank Green and Brandon Jackson answer the questions you submitted and talk about the best ways to study anatomy & physiology. Thank you to Flipgrid for sponsoring this series. Check them out here: https://info.flipgrid.com/ 00:00 Introduction 02:30 Is the heart a muscle or an organ? 08:09 How are skin cells organized through the layers of the skin? 15:01 Neurotransmitters, action potential, gated channels, and the process of muscle contraction 26:55 What's the best way to remember bone landmarks? 30:16 How to read an ECG 40:20 Tips for studying A&P #1 - learning the root words 43:54 Tips for studying A&P #2 - how to use flashcards 47:18 Tips for studying A&P #3 - learning by teaching 49:08 What happens when a muscle cramps? 51:58 Tricks for remembering the veins and arteries 55:25 Outro Crash Course Study Skills: https://www.youtube.com/watch?v=IhuwS5ZLwKY&list=PL8dPuu

Welcome to Crash Course Office Hours! Is the heart an organ? How does the nervous system work? In this livestream, Hank Green and Brandon Jackson answer the questions you submitted and talk about the best ways to study anatomy & physiology. Thank you to Flipgrid for sponsoring this series. Check them out here: https://info.flipgrid.com/ 00:00 Introduction 02:30 Is the heart a muscle or an organ? 08:09 How are skin cells organized through the layers of the skin? 15:01 Neurotransmitters, action potential, gated channels, and the process of muscle contraction 26:55 What's the best way to remember bone landmarks? 30:16 How to read an ECG 40:20 Tips for studying A&P #1 - learning the root words 43:54 Tips for studying A&P #2 - how to use flashcards 47:18 Tips for studying A&P #3 - learning by teaching 49:08 What happens when a muscle cramps? 51:58 Tricks for remembering the veins and arteries 55:25 Outro Crash Course Study Skills: https://www.youtube.com/watch?v=IhuwS5ZLwKY&list=PL8dPuu