Meet the skin! (Overview) | Integumentary system physiology | NCLEX-RN | Khan Academy

– In this next set of videos, we’re going to talk about something called the integumentary system. “And what does that mean? “I mean, I can understand what the cardiovascular system is, “or the pulmonic system or the renal system, “but what is your integument?” What comprises the integumentary system? And there are actually two…

How do Viruses Reproduce?

How do Viruses Reproduce?

Every cell in your body is a tiny factory constantly making proteins. Your genetic code, or DNA, directs every activity. Protein-making machinery in the cell reads the cell’s own DNA and makes sure the cell proteins go where they’re needed. Viruses have their own genetic code, but they don’t have the machinery to copy their…

The Hopeful Link Between AUTOIMMUNE DISEASES & DEVELOPMENT (Asthma, IBS, Allergies, Egzema)

The Hopeful Link Between AUTOIMMUNE DISEASES & DEVELOPMENT (Asthma, IBS, Allergies, Egzema)

Having an autoimmune disease, such as asthma, irritable bowel syndrome, crohn’s disease, allergies, or certain skin conditions, really is no fun, especially as a child. While you’re supposed to be running around and exploring–maybe making a snowman or water-ballooning someone’s house–you’re stuck in a hospital bed with varying amounts of pain. Luckily, it’s not all…

Immune response | Humoral and cell mediated immunity | innate and adaptive immunity

Immune response | Humoral and cell mediated immunity | innate and adaptive immunity

The immune system distinguishes two groups of foreign substances. One group consists of antigens that are freely circulating in the body. These include molecules, viruses, and foreign cells. A second group consists of self cells that display aberrant MHC proteins. Aberrant MHC proteins can originate from antigens that have been engulfed and broken down (exogenous…

Influenza: Get the (Antigenic) Drift

Influenza: Get the (Antigenic) Drift

Have you ever wondered why you need a flu vaccination each year? Unlike other viruses that are relatively stable, influenza viruses are always changing. Influenza genes drift to create new viruses. This means that the infection-fighting antibodies that your body makes in response to the flu vaccine may only protect you for one flu season.…

The Immune System

The Immune System

Hi. It’s Mr. Andersen and welcome to the immune system podcast. In this podcast I wanted to start with a little history. These are some beautiful illustrations from the Florentine Codex which is thousands of pages long. It was created over about 45 years by this guy, this friar. And basically what we did was…