Catalyst University
Calcium as a Second Messenger
In this video, we discuss Calcium as a Second Messenger
Catalyst University
[Re-upload] How Does CBD Oil Work? | Mechanisms of THC and CBD in Pain
In this video, we explore the mechanisms of cannabinoids such as CBD in the treatment of pain. Also explored are basic pain signaling, 2-AG, and anandamide.
Brains On
Birds and Their Eggs and Poop
The 10,000 different species of birds found on the planet all have a few things in common: they have feathers and wings, lay eggs, and are warm blooded. What special adaptations have they developed to help them fly fast, hatch their...
Curated Video
Elements Review
Let's take a look back at the elements helium, tin, calcium, palladium, and lead.
Let's Tute
IELTS Reading: Note Completion
In this video, the teacher explains how to approach summary completion questions in the IELTS reading test. They provide step-by-step instructions on how to understand the word form, underline keywords, and scan the passage for answers....
Healthcare Triage
The Milk-Industrial Complex: Why You Don't Need to Drink Milk
Readers of Aaron's blog know of his beef with the milk industrial complex. Why does milk, of all beverages, get a pass in our efforts to reduce everyone's caloric intake? Why is it encouraged, when all others are shunned? Is it because...
Curated Video
Do bones decompose? How long does it take for bones to decompose?
Ever wonder why bones can survive hundreds of years without decomposing? This is due to the unique composition of bone. Bone is primarily composed of a very stable protein called collagen and the mineral calcium. The association between...
Science ABC
The Glands and Hormones of The Endocrine System
Your body produces 50 different hormones that regulate everything in your body. This video covers some important endocrine glands and their hormones. The major endocrine glands are: the hypothalamus, the pituitary glands, the pineal...
Curated Video
I WONDER - Is Cheese Good For Your Teeth?
This video is answering the question of is cheese good for your teeth.
Curated Video
Identifying Metal and Non-Metal Ions: Tests and Outcomes
This is a tutorial video on the required practical activities for identifying positive metal ions or negative non-metal ions in a solution in chemistry. The video explains the tests that need to be carried out and the expected outcomes...
Professor Dave Explains
Types of Silicates Part 2: Inosilicates, Phyllosilicates, and Tectosilicates
Silicates are a particularly complex class of minerals that all contain silica tetrahedra. What are the characteristic structures of the last three sub classes of silicates? How are they different from one another? The 8 Classes of...
Professor Dave Explains
Practice Problem: Balancing Equations
Who couldn't use a little practice balancing equations? If you've seen my tutorial outlining how to do this, then you're ready for four rapid fire examples to make sure you're ready to do this on your own. Give them a shot!
TMW Media
Hydrate Compounds
This program covers the very important topic of hydrate compounds. We begin by discussing what a hydrate compound is and why they exist in nature. We discuss how to name hydrate compounds using numerous examples. The entire lesson is...
TMW Media
Properties Of Water: Future use of water
What research is being conducted currently? How does it work? If successful, how can it help society? What careers deal with science and water?
Properties Of Water, Part 5
Curated Video
Muscle Contraction Made EASY: What REALLY Happens During Exercise
How do muscles actually contract? There's a lot involved in the process. And in this video, we talk about muscle contraction at the molecular level. We'll discuss sarcomeres, actin, myosin, the muscle action potential and the roles of...
Curated Video
042 How Calcium ion release results in Muscle Contraction
In this video, I show how the release of Calcium ions from the sarcoplasmic reticulum results in skeletal muscle contraction at the level of the sarcomere. Enjoy
Professor Dave Explains
The Composition of Rocks: Mineral Crystallinity and Bonding Types
What is a mineral? How are minerals classified based on their elemental composition, crystalline structure, and bonding type? Learn the basics of mineral composition and classification in this video.
Minerals part 1
Food Farmer Earth
Healthy Foods to Feed Your Dog
According to Rick Woodford, author of Feed Your Best Friend Better, cooking the right homemade food for your dog helps provide a greater variety of amino acids, vitamins, and especially phytochemicals and antioxidants that "help...
Curated Video
020 Facilitation
In this episode, I talk about the concept of facilitation and explain how it results in a stronger signal in the postsynaptic cell.
Curated Video
040 The Role of Hair Cells in Hearing
In this video, I show the details of how the bending of the stereocilia on the inner hair cells results in the release of neurotransmitters, which ultimately results in hearing. Enjoy.
Curated Video
043 The details of Muscle Contraction
In this video, I go into the nitty gritty details of how muscle contraction works at the level of actin and myosin in the Sarcomere. I deal with words like troponin and tropomyosin, sarcoplasmic reticulum and Terminal Cisternae. Fun...
Curated Video
How Adrenaline and Acetylcholine Affect Heart Rate
In this episode, I discuss the effect of Adrenaline and Acetylcholine on heart rate. Adrenaline speeds it up and Acetylcholine slows it down. They both have their effect by modifying the conductance for ions such as Sodium, Potassium and...
Curated Video
Action Potentials and Contraction in Cardiac Muscle Cells
In this episode, I show how the Action potential is generated in cardiac muscle cells and how this results in Contraction of the Heart. When the action potential happens, calcium ions are released from the Sarcoplasmic reticulum, causing...