For the average person, washing their hair every day or every few days is a matter of hygienic preference rather than necessity. Unless their work or pastime brings them in contact with dirt or involves physical exertion, it is unlikely that their hair would go from being clean to truly dirty in the span of twenty-four hours.
So, what is the true science behind our “dirty” hair and the ingredients in our shampoo?
Circulatory System: Heart Structures and Functions; Blood flows through the heart in the following order: body –>inferior/superior vena cava –> right atrium –> tricuspid valve –> right ventricle –> pulmonary arteries –> lungs –> pulmonary veins –> left atrium –> mitral valve –> left ventricle –> aortic valve –> aorta –> body…
Common eye problems, diseases, and disorders – Quick and easy to learn diagram, definitions, and explanations for common eye diseases
What is the difference between Kwashiorkor and Marasmus? USMLE protein-energy malnutrition diseases; we explain the differences, including causes, symptoms, comparative medical charts.
Circulatory system – order of blood flow through the heart; Step by step Pathway of Blood Flow Through the Heart; Quick and easy to learn in 14 steps
Phosphorus Part 2: Health Risks and Disadvantages. Part 1 of this article described the uses and advantages of the element phosphorus. However, there are also various health risks that come with using phosphorus in our lives.
Vitamins and minerals both help our bodies work properly, and they aid with functions such as growth and development. So what is the difference between the two? Simply stated, vitamins are organic and minerals are inorganic. This means that vitamins come from living sources, like plants and animals, while minerals come from elsewhere, such as the earth. Vitamins tend to have more complex structures than minerals, and because of this, are more prone to degradation via heat or chemicals. Today, we will be focusing on vitamins.
The muscular system allows us to move and do our daily tasks. It also provides heat, stability, and blood flow for our body. There are three main types of muscular tissue: cardiac muscle, which comprises the heart muscle, smooth muscle, which comprises the linings of organs, and skeletal muscle, which are the muscles that help our body move. This article will focus on the physiology of skeletal muscles.
In this quick, easy-to-understand lesson, we learn about the kidney’s development and renal embryology in 3 stages. Mnemonics & Kidney Embryology Quiz Included!
On April 10th, 2019, astronomers made a historical discovery within the enshrouded area: they captured the first picture of a supermassive black hole. Learn more about black holes with us!
The COVID-19 pandemic has people across the world self-quarantining, but what does that mean for the furry additions of our families? Are animals affected by the virus like we are?
You can probably find that phosphorus is the 15th chemical element if you look at a periodic table. You might also easily guess that it has the chemical symbol P. But what you may not know is that beyond these basics, there are many different applications of phosphorus that make it a significant part of our everyday lives.
Come learn about interesting factors about phosphorus with us!
With a majority of the world under lock-down and physical schools closed, teachers and students from various countries and continents are plunging into the digital age. Many schools have shifted into online learning, allowing for asynchronous learning to happen for students across different locations and time zones. However, from a scientific standpoint, how does online learning measure up to physical learning?
Does being alone at home make a person go insane? After weeks of social distancing because of COVID-19, people locked up in their homes may be getting bored and restless. Attending school, going out to eat, hanging out with friends — parts of their lives that are normal — are no longer possible. What is the science behind the human’s social brain, and what does isolation do to the brain?
Help, I smell like fish! Is this even possible?
Body odor is a fact of life. For many, this is a simple fix either through some deodorant or a quick shower, but for some unlucky few, a fishy odor always remain. This is none other than Fish Odor Syndrome, a rare genetic disorder also known as Trimethylaminuria (TMAU). Learn more about the biology behind Fish Odor Syndrome, the FMO3 gene, cures and treatments.
5 Effective Study Strategies for Students: Learning is a lifelong journey that people experience. Here are 5 effective study techniques for students and lifelong learners.
A Global Epidemic: The Novel 2019 Coronavirus
On December 31st, 2019, Chinese officials informed the World Health Organization that a group of strange cases of pneumonia were detected in the city of Wuhan. The cause of the pneumonia was unknown, but a week later, Chinese health officials confirmed that the cases were associated with a novel coronavirus.
In this lesson, we learn about what is the coronavirus, how the coronavirus spreads, how deadly it is, and why COVID-19 matters for our public and global health.
Brain Bee Study Guide: Free neuroscience resources and study guide notes for Brain Bee competition students: Chapter 4 Learning, Memory, and Language
How did flightless birds evolve? How did the evolution of the shrinking cod come to be? In this lesson, we learn about the evolution of the flightless birds, such as cormorants, and the evolution of the shrinking cod in our biology selection case studies.
Literary analysis and symbolism essay of Do Androids Dream of Electric Sheep by Philip K. Dick, including the symbolic interplay of Silence, Entropy, Kipple, Loneliness, and Connection, Humanism, Television, Androids, conclusions and themes
Literary analysis and symbolism essay of Do Androids Dream of Electric Sheep by Philip K. Dick, including the symbolic interplay of science and organized religion, science, humanism, faith, androids, Mercerism, conclusion and thematic ending
Differences between autocrine, paracrine, juxtacrine, and endocrine signaling. Quick easy lesson on Autocrine vs Paracrine vs Endocrine vs Juxtacrine Signaling.
In this lesson, we learn about the 3 shunts of fetal circulation: ductus arteriosus, ductus venosus, and foramen ovale of the fetal heart: functions, medical significance, when they close, medical complications, and remnant ligaments.
Are carbon emissions (carbon dioxide) good or bad for our environment? In this lesson, we will explore why carbon emissions are good and why carbon emissions are bad.
How is glucose transported into the blood? How is glucose taken up by red blood cells? In this easy-to-understand lesson, we explain the processes behind these questions.