Seventeen people in the US die /every day/ waiting for an organ transplant, usually a kidney. One approach is to grow extra kidneys in pigs, an idea known as xenotransplantation. We'll look at two recent milestones, as well as the...

Join the Amoeba Sisters in exploring some general animal characteristics, major vocabulary used in classifying animals (such as symmetry, protostome vs deuterostome, cephalization, and coelom), and take a general tour of 9 major animal...

On the genetic level, we're not all that different from chimps. But those small differences in DNA can have massive effects. Learn what makes us truly different from chimpanzees in this new episode of SciShow!

On the genetic level, we're not all that different from chimps. But those small differences in DNA can have huge effects.

Twins can be a lot more complicated than just identical or fraternal, and the rarer types of twins suggest that we have a lot more to learn about human development.

Hank fills us in on the endocrine system - the system of glands which produce and secrete different types of hormones directly into the bloodstream to regulate the body's growth, metabolism, and sexual development & function.

It took a very long time, but we are finally finished with the clade Protostomia, or first mouths. Now it's time to tackle Deuterostomia, or second mouths, a clade containing only three phyla. This will take some time, since one of those...

Learn about the vital marine conservation efforts at The Brando, led by Cécile Gaspard and the Te Mana O Te Moana Foundation. Discover how research and innovative sustainability practices protect Tetiaroa's delicate ecosystem,...

Programmed cell death, which is the body's normal method of disposing of damaged, unwanted, or unneeded cells.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images...

Lesson on the Wnt/β-Catenin signaling pathway (also known as simply the Wnt signaling pathway), including an introduction to the pathway, Wnt growth stimulatory factors, β-Catenin regulation and role of the pathway in growth,...

If we want to understand a biological organism, we turn to the expression of its genome. Which genes are being expressed, and in which cells, and when? How does this differ between a normal cell and a cancer cell? We have incredibly...

Meckel Diverticulum (Most Common Congenital Intestinal Anomaly) | Causes, Symptoms & Complications, Diagnosis, Treatment



Meckel Diverticulum is the most common congenital anomaly of the gastrointestinal tract, occurring in...

A dermatome is an area of skin supplied by a single spinal nerve.

Function and anatomy of the left atrium.

Appearance and features of the reticular connective tissue.

Developmental Set: 1. This clip introduces the early stages of embryonic development and the process of cellular differentiation that gives rise to organ systems during fetal development.