Hair Hair originates from the base of the downward extension of living epithelial cells into the dermis that is called the hair follicle....

Let's look at muscles on a molecular level: Myosin- A protein that converts the chemical energy stored in the bonds of ATP into the...

7:30 PM that same day... The structural hierarchy of the skeleton is as follows: - Chemistry/molecular scale: Water, minerals, collagen,...

April 14th, 10:00 PM I'll introduce the skeletal system in a second, but first let's wrap up our conversation about homeostasis by...

April 13th, 7:30 AM Prometaphase - Nuclear envelope disassembles - Chromosome forms two kinetochores at the centromere - Microtubules...