#anatomy

#anatomy

Forget Anatomical Drawings! This TikTok Video Teaches Human Anatomy Using Real CadaversMedical students study anatomy in their first year in med school. To better understand and visualize the parts of the human body, they get to experience dissecting a cadaver. The pandemic, however, has caused schools to transition to online classes. First-year medical students rely on anatomical drawings and images provided to them instead.The Institute of Human Anatomy (IOHA) shares TikTok videos that teach human anatomy using real cadavers. They aim to provide a state-of-the-art educational experience for those seeking a healthcare profession.As always, cadavers are treated with care by the institution. They are grateful for those who make the selfless decision to donate their bodies to medical and educational studies.Image: IOHA via Tiktok#Cadaver #Anatomy #Physiology #MedicalEducation

Spiral Shark Intestines Function Like Nikola Tesla ValveIt may be surprising, but scientists actually don’t know much about how a shark’s digestive system works, and how they eat, digest and excrete impact other marine species.In a new study, scientists used computerized tomography or CT scanner to investigate the intestine of a Pacific spiny dogfish shark (Squalus suckleyi). “It’s high time that some modern technology was used to look at these really amazing spiral intestines of sharks,” said professor Samantha Leigh of California State University, Dominguez Hills. “We developed a new method to digitally scan these tissues and now can look at the soft tissues in such great detail without having to slice into them.”The researchers found that the spiral intestine of the shark resembles the one-way valve designed by Nikola Tesla more than a century ago. The so-called ‘Tesla Valve’ allows fluid to flow in one direction without backflow or even moving parts.Leigh suggests that as most sharks usually go days or even weeks between eating large meals, their spiral intestines allow them to hold food in their digestive system and absorb as much nutrients as possible. The slowed movement of food in the intestines allows sharks to retain food there longer, as well as use less energy processing it.Images and video clip: Samantha Leigh/California State University, Dominguez Hills#CTScan #shark #intestines #TeslaValve #NikolaTesla #digestivesystem #marinebiology #anatomy #fluiddynamics

Sea Turtle Has a 'Third Eye' That Senses Change in SeasonsLeatherback sea turtle (Dermochelys coriacea) has a pink spot/white spot on top of its head that act as a "third eye" to help it sense the change in seasons.Every summer, the sea turtle swim thousands of miles from their breeding ground in tropical waters to feed in cooler parts of the ocean - but how does it know how to begin its journey back? Now, a new anatomical study showed that the pink/white spot on top of its head has a markedly thinner layer of bone and cartilage thus allowing the underlying pineal gland of the turtle's brain to sense subtle changes in sunlight that accompanies the changing of the seasons - thus acting as a "skylight" sensor.Image: J. Davenport et al.#turtle #leatherbackseaturtle #thirdeye #eye #pinealgland #anatomy #animalmigration