What is the difference between central sleep apnea and obstructive sleep apnea? In this lesson, we learn about sleep apnea, its symptoms, diagnosis, treatment, and differentiate between central sleep apnea and obstructive sleep apnea. USMLE
Staple crops are foods that shape the dietary foundations of one or more regions. Rice, wheat, and corn provide over half of the world population’s caloric intake. In this lesson, we learn about the history of wheat and its global impact.
Pneumothorax also known as collapsed lung occurs when air is trapped in the pleural space. Trapped air causes a loss of negative pressure in the pleural cavity, reduces surface tension, and induces the lungs to collapse. There are 3 types of Pneumothorax or collapsed lungs: 1) Spontaneous 2) Traumatic, and 3) Tension Pneumothorax.
In this lesson, we learn the different types of pneumothorax (collapsed lung) and important terminology. USMLE
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
Brain Bee Study Guide: Free resources and study guide notes for Brain Bee competition students: Chapter 9 Kinds of Research
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.
Differences between autocrine, paracrine, juxtacrine, and endocrine signaling. Quick easy lesson on Autocrine vs Paracrine vs Endocrine vs Juxtacrine Signaling.
Biology Unit 2 Study Guide: Basic Building Blocks of Life. Protein, lipid, nucleic acid, carbohydrate, properties of water, enzymes, organelles. With examples and answers to help make biomolecules easy to learn!
Lysosomal Storage Diseases: Tay-Sachs Disease vs Niemann-Pick DIsease: Similarities and differences for symptoms, causes, enzymes, biochemistry, inheritance, etc
Biology Unit 1 Study Guide: Ecology and Scientific Method, including Characteristics of Life, Biodiversity, Cycles of Matter, and Global Change. With examples and answers to help make ecology easy to learn!
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.
Common eye problems, diseases, and disorders – Quick and easy to learn diagram, definitions, and explanations for common eye diseases
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.
Digestive System Anatomy: Diagram, Organs, Structures, and Functions
Nutrition: Glucose and Diabetes Type 1 vs. Diabetes Type 2, Carbohydrates, Lipids, and Proteins
In this lesson, we explain about the biochemistry of glucose transporters GLUT and SGLT, their functions, and differences. Biochemistry, MCAT, and USMLE
Motivational Quote of the Day: Don’t wait for Opportunity. Create it!
Motivational Quote of the Day: You’re Off to Great Places! Today is Your Day! And we wish you a wonderful day! Want more of our free content and motivational quotes of the day? Join Us! Subscribe for free or like us on Facebook.
Best Motivational Quotes: Don’t be pushed around by the fears in your mind. Be led by the dreams in your heart. – Roy T. Bennet
In this quick and easy lesson, we explain the shoulder muscles responsible for abducting the shoulder, the anatomy, the degrees of arm abduction for each shoulder muscle, and the nerves that innervate the shoulder abduction muscles.
USMLE Lesson on Biochemistry Nutrition: Zinc Deficiency, the functions of zinc, including its role as zinc fingers transcription factor motifs, and zinc deficiency symptoms
In this lesson, we explain the differences between flippase, floppase, and scramblase. Flippase vs Floppase vs Scramblase as lipid transporters in the cell membrane with Quick and Easy Explanation
In this lesson, we explain what types of molecules can pass through the cell plasma membrane and what are the factors that determine whether a molecule can cross a cell membrane: Quick and Easy Explanation on the Cell Membrane
In this quick and easy lesson, we explain what is the Cori cycle, how the Cori cycle works, what is its clinical significance, and where is the Cori cyle located: MCAT and USMLE medicine.