A leather mask that clamps the mouth shut. A cannonball sewn into a soldier's uniform. A machine that delivers sudden electrical pulses. These were all treatments for a problem that has haunted humanity for millennia: snoring. It might...

Thanks to strontium, oxygen, and rings in a tusk, scientists now have evidence that extinct mastodons may have participated in yearly migrations.

In this video, Justin from the Institute of Human Anatomy discusses the drowning process, as well as the relevant anatomy.

The first aspect of the innate immune system we will examine is the many barrier surfaces, such as the skin, as well as the linings of the respiratory tract and digestive tract. These cells have to constantly prevent infection from the...

This video explains why and how things can go down the wrong tube when eating or drinking. It provides a detailed anatomy lesson, focusing on the role of the epiglottis in protecting the airway from food or drink entering the respiratory...

Major Anatomy of the Respiratory Tract

Repeated incomplete, unfinished yawns are often manifestations of underlying anxiety or stress. When you are stressed or anxious, you can’t “let go” enough to relax fully and achieve that full muscular stretch, causing a feeling of...

After learning about the SARS-CoV that hit in 2003, it's time to learn about MERS-CoV, which hit in 2012, and SARS-CoV-2, the one responsible for COVID-19 and the current pandemic. Let's compare these three viruses and talk about our...

The Effects of Exercise on Ventilation

In this lecture, I first deal with the functions of the digestive system. We then take a journey through the digestive system by following your food from your mouth all the way through your body and even through the elimination of...

A&P I Lab | Exercise 4: Histology & Tissues

Here we trace the respiratory structures through which air moves during breathing and see how surface are increases drastically at the level of the alveoli.<br/>

This video discusses the anatomy of the nasal cavity and the causes and treatment of nosebleeds. It also touches on the importance of mucus in the nose and why picking your nose too aggressively can lead to nosebleeds.

If you're above a certain age, you've heard of the measles. This is a particularly nasty viral infection that used to be incredibly common, though is now largely eradicated thanks to vaccinations. Although, anti-vaccine sentiment has...

In this video, I discuss the following:<br/>
[1] anatomy of th<br/>e esophagus
[2] movement of a bolus of food through the esophagus, from the pharynx to the stomach

In this video, the speaker discusses three major weaknesses or liabilities that humans have: the groin, the abdomen, and the neck. They explain how these areas are vulnerable and why they pose risks to our well-being. The speaker also...

In this video, we discuss the functions of the oral cavity and its accessory organs (teeth, tongue, salivary glands).

Main structures of the respiratory system.

The type of muscle tissue found in the walls of blood vessels and hollow internal organs, such as the stomach, intestine etc.

Anatomy and function of the main organs of the respiratory system.

Lots of kids get the chickenpox. I know I did! I was about four years old. It was awful. But now we can learn all kinds of things about the virus called Varicella-Zoster virus, which causes chickenpox and shingles. What is its structure...

Every flu season, Americans battle coughs, fevers and body aches. The flu is a respiratory illness caused by a virus, a pathogen that causes disease in the human body. To understand how the flu is caught, spread and treated, Duke...

Dr. Samir Gupta said some children are showing symptoms of a rare disease that resembles Kawasaki syndrome, but it's not certain that's what they have.

 Researchers are looking into a possible link between COVID-19 and Kawasaki syndrome, a rare inflammatory disease. A medical expert explains the disease.