Curated Video
The Prokaryotic Cell
The Prokaryotic Cell examines a prokaryotic cell by describing its structure.
Curated Video
Cellular Respiration
Cellular Respiration analyzes the process of cellular respiration by describing how cells and organisms acquire and release energy.
Curated Video
Plastids and Mitochondria
Plastids and Mitochondria examines energy transformations by describing the fundamental roles of plastids and mitochondria.
Curated Video
The Endosymbiosis Theory
The Endosymbiosis Theory explains evidence supporting the scientific theory of the origin of eukaryotic cells by describing the process of endosymbiosis.
The Noted Anatomist
Osmosis
This brief video tutorial briefly discusses osmosis, osmotic pressure, oncotic pressure and tonicity: 0:00. Introduction 0:13. Osmosis 1:31. Osmotic pressure 2:03. Oncotic pressure 3:34. Tonicity - 3:47. Isotonic solution - 4:15....
The Noted Anatomist
Resting membrane potential
This brief video tutorial briefly discusses resting membrane potential: 0:00. Introduction 0:53. What is a resting membrane potential? 1:33. How is a RMP measured? 4:12. How do we get a RMP at cell membranes? 9:04. How is the RMP...
The Noted Anatomist
Voltage gated Na channels
This brief video tutorial briefly discusses voltage-gated sodium channels: 0:00. Introduction 0:14. Structure (activation gate and inactivation gate) 1:09. Three conformational states: - 1:24. 1. Closed - 2:30. 2. Open - 3:54. 3....
Curated Video
How the Heart Contracts - Step by Step
Let's dive into the cardiac action potential and how it results in the contraction of the heart. We'll talk about the signal that starts at the SA node and spreads throughout the heart. We'll also get into the phases of depolarization,...
Curated Video
The Pacemaker of the Heart - SA and AV Nodes Made EASY!
In this video, I talk about the pacemaker potential of the heart. We're going to dig into the SA and AV Nodes, how they work, and what happens when things go wrong.
Curated Video
Factors Affecting Diffusion and Fixed Law
This is an educational video that discusses the factors that affect diffusion, which is the process by which particles move from an area of high concentration to an area of low concentration. The video outlines three key factors that...
Catalyst University
Biosynthesis of Peptidoglycan in Bacteria
Biosynthesis of Peptidoglycan in Bacteria
Catalyst University
Biosignaling - Receptor Guanylyl Cyclases & Nitric Oxide
Biosignaling - Receptor Guanylyl Cyclases & Nitric Oxide
Neuro Transmissions
What is Resting Potential?
How is your brain like a battery? When our neurons arenêt firing, what do they do? Resting potential can be a very difficult concept to describe, but Alie Astrocyte breaks it down to the basics so that anyone can understand it! Join us...
Curated Video
Transport of Substances in and out of Cells: Diffusion, Osmosis, and Active Transport
In this video, the concept of transport of substances into and out of cells is explained. The different ways in which this process occurs are discussed, including diffusion, osmosis, and active transport. The importance of surface area...
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.
Professor Dave Explains
Rabies (Genus Lyssavirus)
Most people have heard of rabies, a word that instantly conjures up imagery of a rabid dog. This is an appropriate connotation, as the rabies virus is commonly transmitted through the saliva of an animal. Rabies is as ancient as it is...
Catalyst University
Cardiac Muscle Physiology T Tubules and Calcium-induced Calcium Release
Cardiac Muscle Physiology T Tubules and Calcium-induced Calcium Release
Curated Video
Efficient Transport and Exchange in Living Organisms
This video explains the concept of efficient transport and exchange in organisms. It discusses the importance of exchanging substances with the environment, such as taking in oxygen and getting rid of waste. The video explains surface...
Catalyst University
Biosignaling - G-protein-coupled Receptors PLC, DAG, & IP3
Biosignaling - G-protein-coupled Receptors PLC, DAG, & IP3
Catalyst University
Biosignaling - Receptor Desensitization by Beta-arrestin
Biosignaling - Receptor Desensitization by Beta-arrestin
Catalyst University
Biosignaling - Sonic Hedgehog (Shh) Signaling Pathway
Biosignaling - Sonic Hedgehog (Shh) Signaling Pathway
Catalyst University
Malate-Aspartate Shuttle Mitochondrial NADH Transport
Malate-Aspartate Shuttle Mitochondrial NADH Transport