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Where to watch "Crash Course Anatomy & Physiology"
47. Immune System, Part 3: Crash Course A&P #47
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THE FINAL SHOWDOWN! This is the last episode on the immune system and also the very last episode of Crash Course Anatomy & Physiology. In it, Hank explains how the cellular immune response uses helper, cytotoxic, and regulatory T cells to attack body cells compromised by pathogens.
46. Immune System, part 2: Crash Course A&P #46
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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.
45. Immune System, Part 1: Crash Course A&P #45
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Our final episodes of Anatomy & Physiology explore the way your body keeps all that complex, intricate stuff alive and healthy -- your immune system.
44. Lymphatic System: Crash Course A&P #44
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Today Hank explains your unsung lymphatic system and how it supports cardiovascular function by collecting, filtering, and returning interstitial fluid back into the bloodstream via a system of lymphatic vessels.
43. Reproductive System, Part 4 - Pregnancy & Development: Crash Course A&P #43
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We've reached the grand finale of our four-part series on human reproduction: BABIES! Today Hank walks you through the stages of pregnancy, beginning with how a zygote develops into blastomeres to a morula to a blastocyst and finally to an embryo and a fetus.
42. Reproductive System, part 3 - Sex & Fertilization: Crash Course A&P #42
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After weeks of discussion of human reproduction, today we arrive at the main event: THE SEX. Hank explains the four phases of the human sexual response, how a sperm finds and fertilizes an egg, creating a zygote, and how different types of contraception work to prevent that from happening.
41. Reproductive System, Part 2 - Male Reproductive System: Crash Course A&P 41
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Our month-long exploration of human reproduction continues with a look at testicular anatomy, the steps of sperm production, and how it?s influenced by gonadotropin and testosterone.
40. Reproductive System, Part 1 - Female Reproductive System: Crash Course A&P #40
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Human reproduction is complicated and important, and it's going to take a four-part series for us to cover it. Today, we're kicking that off with the female reproductive system, starting with how sex hormones affect oogenesis and ovulation.
39. Urinary System, Part 2: Crash Course A&P #39
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As we promised last week, we're not quite done talking about your pee yet. Today Hank explains how the urinary system regulates the production of urine, by maintaining a study glomerular flow rate.
38. Urinary System, Part 1: Crash Course A&P #38
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Even though you probably don't choose to spend a lot of time thinking about it, your pee is kind of a big deal. Today we're talking about the anatomy of your urinary system, and how your kidneys filter metabolic waste and balance salt and water concentrations in the blood.
37. Metabolism & Nutrition, Part 2: Crash Course A&P #37
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If you're like us, you love the sound of a brunch buffet. But not everything you eat at that glorious buffet is going to be turned into energy. Your body has to work with different forms of food in different ways.
36. Metabolism & Nutrition, part 1: Crash Course A&P #36
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Metabolism is a complex process that has a lot more going on than personal trainers and commercials might have you believe. Today we are exploring some of its key parts, including vital nutrients -- such as water, vitamins, minerals, carbs, fats, and proteins.
35. Digestive System, part 3: Crash Course A&P #35
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When digestion goes according to plan, the small intestine performs most of your chemical digestion in the duodenum, while accessory organs including the liver, gallbladder, and pancreas contribute enzymes that all but finish the job.
34. Digestive System, Part 2: Crash Course A&P #34
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Nearly 200 years ago, Alexis St. Martin was shot in the stomach. He was saved by local army doctor William Beaumont but had to live out his remaining years with a gaping hole in the stomach -- allowing Beaumont to learn a lot about how human digestion works.
33. Digestive System, Part 1: Crash Course A&P #33
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Nachos are delicious. And versatile because today they're also going to help us learn a thing or two about your digestive system.
32. Respiratory System, part 2: Crash Course A&P #32
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Can a paper bag really help you when you are hyperventilating? It turns out that it can. In part 2 of our look at your respiratory system, Hank explains how your blood cells exchange oxygen and CO2 to maintain homeostasis.
31. Respiratory System, Part 1: Crash Course A&P #31
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So we all know that breathing is pretty important, right? Today we're going to talk about how it works, starting with the nameless evolutionary ancestor that we inherited this from, and continuing to the mechanics of both simple diffusion and bulk flow.
30. Blood, Part 2 - There Will Be Blood: Crash Course A&P #30
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It's time to start talking about some of the terrible things you can do to your own body, like blood doping.
29. Blood, Part 1 - True Blood: Crash Course A&P #29
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Now that we've talked about your blood vessels, we're going to zoom in a little closer and talk about your blood itself.
28. Blood Vessels, Part 2: Crash Course A&P #28
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And now we return to blood vessels. In this episode, we start discussing what blood pressure is, how it can become ""high"", and what that means for our health.
27. Blood Vessels, Part 1 - Form and Function: Crash Course A&P #27
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Now that we've discussed blood, we're beginning our look at how it gets around your body. Today Hank explains your blood vessels and the basic three-layer structure of your blood vessels.
26. The Heart, Part 2 - Heart Throbs: Crash Course A&P #26
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Hank explains how your heart?s pacemaker cells use leaky membranes to generate their own action potentials, and how the resulting electricity travels through the cardiac conduction pathway from SA Node to Purkinje fibers, allowing your heart to contract.
25. The Heart, Part 1 - Under Pressure: Crash Course A&P #25
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Your heart gets a lot of attention from poets, songwriters, and storytellers, but today Hank's gonna tell you how it really works.
24. Endocrine System, part 2 - Hormone Cascades: Crash Course A&P #24
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In the second half of our look at the endocrine system, Hank discusses chemical homeostasis and hormone cascades. Specifically, he looks at the hypothalamus-pituitary-thyroid axis, or HPT axis, and all the ways your body can suffer when that system, or your hormones in general, get out of whack.
23. Endocrine System, Part 1 - Glands & Hormones: Crash Course A&P #23
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Hank begins teaching you about your endocrine system by explaining how it uses glands to produce hormones. These hormones are either amino-acid-based and water-soluble, or steroidal and lipid-soluble, and may target many types of cells or just turn on specific ones.
22. Muscles, part 2 - Organismal Level: Crash Course A&P #22
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Hank calls in a friend to do his push-ups for him today to explain how skeletal muscles work together to create and reverse movements.
21. Muscles, Part 1 - Muscle Cells: Crash Course A&P #21
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We're kicking off our exploration of muscles with a look at the complex and important relationship between actin and myosin. Your smooth, cardiac, and skeletal muscles create movement by contracting and releasing in a process called the sliding filament model.
20. Joints: Crash Course A&P #20
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This episode also talks about the structural and functional classifications of your joints and the major types of body movement that they facilitate.
19. The Skeletal System: Crash Course A&P #19
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Today Hank explains the skeletal system and why astronauts Scott Kelly and Mikhail Kornienko are out in space studying it. He talks about the anatomy of the skeletal system, including the flat, short, and irregular bones, and their individual arrangements of compact and spongy bone.
18. Vision: Crash Course A&P #18
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Next stop in our tour of your sensory systems? VISION. With a little help from an optical illusion, we take a look inside your eyes to try to figure out how your sense of vision works -- and how it can be tricked.
17. Hearing & Balance: Crash Course A&P #17
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Crash Course A&P continues the journey through sensory systems with a look at how your sense of hearing works. We follow sounds as they work their way into the ear where they are registered and transformed into action potentials.
16. Taste & Smell: Crash Course A&P #16
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Hank resists the urge to devour a slice of pizza so that he can walk you through the way we experience our major special senses.
15. Parasympathetic Nervous System: Crash Course A&P #15
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This week we are looking at your parasympathetic division, which is the "resting and digesting" unit. Unfortunately, learning about this de-stressing division also involves a whole lot of memorization. Don't worry, though - we've got some mnemonic devices to help you out!
14. Sympathetic Nervous System: Crash Course A&P #14
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Hank tries not to stress you out too much as he delves into the functions and terminology of your sympathetic nervous system.
13. Autonomic Nervous System: Crash Course A&P #13
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Hank takes you on a tour of your two-part autonomic nervous system. This episode explains how your sympathetic nervous system and parasympathetic nervous system work together as foils, balancing each other out.
12. Peripheral Nervous System: Crash Course A&P #12
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It is now time to meet the system that helps your crazy brain stay in touch with the outside world. We follow up last week's tour of the central nervous system with a look at your peripheral nervous system.
11. Central Nervous System: Crash Course A&P #11
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Today Hank talks about your central nervous system. In this episode, we'll explore how your brain develops and how important location is for each of your brain's many functions.
10. The Nervous System, Part 3 - Synapses!: Crash Course A&P #10
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We continue our tour of the nervous system with a look at synapses and the crazy stuff cocaine does to your body.
9. The Nervous System, Part 2 - Action! Potential!: Crash Course A&P #9
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What do you and a sack of batteries have in common? Today, Hank explains.
8. The Nervous System, Part 1: Crash Course A&P #8
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Today Hank kicks off our look around MISSION CONTROL: your nervous system.
7. The Integumentary System, Part 2 - Skin Deeper: Crash Course A&P #7
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Today Hank wraps up this look at your integumentary system and all the hard work it does protecting you from and helping you interact with the world around you.
6. The Integumentary System, Part 1 - Skin Deep: Crash Course A&P #6
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Anatomy & Physiology continues with a look at your biggest organ - your skin.
5. Tissues, Part 4 - Types of Connective Tissues: Crash Course A&P #5
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Today Hank wraps up our look at Connective Tissues with a discussion of its various types and a breakdown of what you can and can't easily break down. Also chicken.
4. Tissues, Part 3 - Connective Tissues: Crash Course A&P #4
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On today's episode of Crash Course Anatomy & Physiology, Hank continues our exploration of tissues, with an introduction to your connective tissues.
3. Tissues, Part 2 - Epithelial Tissue: Crash Course A&P #3
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Today on Crash Course Anatomy & Physiology, Hank breaks down the parts and functions of one of your body's unsung heroes: your epithelial tissue. On today's episode of Crash Course Anatomy & Physiology, Hank continues our exploration of tissues, with an introduction to your connective tissues.
2. Tissues, Part 1: Crash Course A&P #2
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In this episode of Crash Course Anatomy & Physiology, Hank gives you a brief history of histology and introduces you to the different types and functions of your body's tissues.
1. Introduction to Anatomy & Physiology: Crash Course A&P #1
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In this episode of Crash Course, Hank introduces you to the complex history and terminology of Anatomy & Physiology.
