This is a blog about diseases, psychology, human anatomy and physiology - basically anything that happens within or on the body.
I am in no ways professional (just curious!), so if you have any corrections, message me.
Message me for ideas, and feel free to submit! (:
Catching Elephant is a theme by Andy Taylor
Instant Egghead - What’s the Longest You Can Hold Your Breath?
Professional ‘free divers’ have no trouble holding their breath for minutes at a time. What stops us from doing the same? In this episode, Scientific American’s Katherine Harmon—and Katherine Harmon—explore the limits of human physiology.
Weird Diagnostics
Hank goes over some of the more interesting ways that doctors can use to tell what might be wrong with you.
The Difference between the Left and Right Ventricles
The demand for blood between the left and right atrium are the same. However, the demand is different for the left ventricle and right ventricle. The two also have different structural differences
The lungs are closer to the heart and the pulmonary blood vessels are relatively short and wide. For these reasons, the right ventricle normally does not need to work as hard. Also, the muscle walls of the right ventricle are relatively thin. When the right ventricle contracts, it squeezes the blood very efficiently with minimal effort, but it develops low pressure.
A comparable pumping arrangement will not work as well for the left ventricle. Four to six times as much pressure must be exerted around the systemic circuit as around the pulmonary circuit. The left ventricle has an extremely thick muscular wall and is round in cross section. When the left ventricle contracts, it shortens and narrows. This effect is similar to squeezing a toothpaste.
Photo Credit: Mayo Clinic
Changes in respiration and heart rate during a sentic cycle. Respiration accelerates during anger and hate. During grief the respiration has a gasping character with rest periods at the expiratory end of the cycle. Respiration slows during love, and speeds up markedly for sex. (Inspiration is downward in the figure.)
A fluorescence image of primary human dendritic cells, cells within the mammalian immune system that process and present antigens to other immune system cells.
Image by Karla Daniels, University of Iowa.
Questions for YOU!
- Does anyone have suggestions on what you would like to see more of?
- Opinions on screen caps of powerpoint slides - like? dislike?
- Anything you’d like me to research for you?
Showing osteoporotic architecture in the fourth lumbar vertebra of an 89 year old woman (x20). The bone is heavily eroded in places by the action of osteoclasts and consists mainly of thin, fragile struts.
Blushing is a Sign of a Great Lover
