Photographs of vintage optical illusions and a brief description of what an optical illusion is and how the mind gets tricked to see on thing while looking at another!
A resistance to the inflow and out-flow of air is exerted by the walls of the airways. The impact of airway resistance, the flow dynamics and the factors governing the resistance are discussed here.
The celiac plexus otherwise known as the solarplexus is also referred to as man's fourth brain. This is the center that controls the nutrional needs of the digetstive, respiratory and circulatory systems.
This is part 5 of a 7 part hands-on unit study on anatomy of the human body. Walk through your circulatory system, create a blood model and fake movie blood, measure your heart rate, dissect a heart, and more! These lessons are geared toward 4th-5th grade level children and their siblings. They...
The brain is divided into four major parts. The cerebrum, brain stem, diencephalon and the cerebellum.
There are five main layers of the epidermis; they include the stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum.
When faced with a life-threatening situation, your body triggers the fight or flight response. Your brain signals the adrenal gland to release adrenaline, to prepare your body against the threat.
How the eye works is similar to a camera. The iris controls how much light enters the eye, the lens focuses images onto the retina. The retina transmits messages to the brain for processing.
Organ systems are groups of different organs working together to do a particular job. Take a closer look at the roles of each of the organ systems in the human body.
It's an age-old belief; we only use 10% of our brain. But, is there any truth to it? Researchers have weighed in on the topic. Here's what they have to say on the matter.