Catalyst University
Follicular Cells & the Synthesis of Thyroid Hormones
In this video, we will discuss the following: [1] the synthesis of thyroid hormones, T3 and T4, from iodide and thyroglobulin in follicular cells. [2] the activation of T4 to T3 which occurs at the target cell level. [3] the elimination...
Catalyst University
Hip External Rotators The Deep Gluteal Muscles
In this video, we explore the deep gluteal muscles that facilitate hip external rotation including origins, insertions, actions, and innervation.
Catalyst University
Classifying Spinal Cord Injuries using ASIA Scoring [Explanation + Example 1]
In this video, I explain the basis of spinal cord assessment using the ASIA scoring system and work through and example of how to assess spinal cord pathology using the ASIA score sheet [neurological levels of injury, zone of partial...
Professor Dave Explains
Geophysicist Jon Aurnou (Get to Know a Scientist!)
UCLA is full of amazing scientists! What do they all do? Well, pretty much everything you can imagine, but in this series we will meet as many of them as we can, one by one! Let's start with geophysicist Jon Aurnou. He studies fluid...
Curated Video
Experiment on How Increasing Reactant Concentration Affects Reaction Rate
The video discusses a required practical activity from the chemistry specification, which is an experiment to investigate how increasing the concentration of a reactant affects the rate of the reaction by observing a precipitate. The...
Curated Video
Conservation of Mass and Chemical Equations
The video discusses the conservation of mass in chemical reactions and the application of this principle in calculating the mass of reactants and products. It also explores the features of chemical equations such as balancing and state...
Physics Girl
My Path into Physics (at MIT)
Dianna Cowern runs Physics Girl full time. Here she discusses her path to studying physics and doing physics research before moving on to other, less prestigious, career pursuits.
Professor Dave Explains
Heterocycles Part 2: Pyridine
In the previous tutorial, we learned about some five-membered aromatic heterocycles. Those were furan, thiophene, and pyrrole. Now let's learn about a six-membered one, pyridine. This one is ubiquitous in nature, so let's get the scoop...
Catalyst University
Plotting Potential Energy versus Intermolecular Radii
Plotting Potential Energy versus Intermolecular Radii
Catalyst University
Anatomy - Erythrocyte [RBC] Metabolism
In this video, we discuss the degradation pathway of red blood cells [Erythrocytes] and trace the fates of the 1) globins, 2) heme, and 3) iron.
Catalyst University
Anatomy of the Human Scapula [+ 3D Model @ 1204]
In this video, we discuss the anatomy of the human scapula using images and a 3D model.
Catalyst University
A Brief History of Fat - [Part 3 3]
In this segment, we continue our discussion on Western diseases and explore how sugar, chronically elevated insulin, and inflammation lead to a diseased cardiovascular system.
Neuro Transmissions
Why Do Placebos Work?
Placebos are treatments that donêt actually do anything. They have no medical effect and no active medicine. It's not a drug that is intended to improve your health. So why do they sometimes work? Well, it turns out your brain is super...
Curated Video
Introduction to Diffusion: Definition, Process, and Factors Affecting Rate
This video provides an explanation of what diffusion is, how it occurs, and how to change the rate of diffusion. The concept of diffusion is demonstrated through the example of a plate of food emitting a smell that travels across a room....
Professor Dave Explains
Pericyclic Reactions 3
Professor Dave explains the science and theory behind pericyclic reactions (Part Three)
Science360
Sea spray: Complex chemistry with big effects on climate
Take in a deep breath of salty ocean air and more than likely you're also breathing in naturally occurring sea spray aerosols. But, there's much more in each of those tiny bursting ""bubbles"" than salt. They're also bursting with ocean...
Catalyst University
Glycolysis (Part 4 4) Payoff Phase Review
Glycolysis (Part 4 4) Payoff Phase Review
Catalyst University
Determine HR from a Regular-Rhythm EKG 1500- & 300-methods
This EKG video explains how to use the 1500-method and the 300-method to determine HR from a regular rhythm.
Catalyst University
Cardiac Muscle Physiology T Tubules and Calcium-induced Calcium Release
Cardiac Muscle Physiology T Tubules and Calcium-induced Calcium Release
Catalyst University
Basics of the Sciatic Nerve - Structure, Branches, and Disorders
In this video, we discuss the origin of the sciatic nerve from nerve roots L4-S3, its structure and branches, and basic disorders of the sciatic nerve. NOTE: The "condition" sciatica is very general but is due to compressed roots ~90% of...
The Backyard Scientist
Do Not try to charge a LiPo Battery like this!
This is what happens when you ignore the warnings on a Lithium (LiPo) Battery. First I tried Disassembling the battery to learn about it. Then I tried shocking the battery with a tesla coil. Surprisingly that did not work, so I connected...