Gecko toes seem to be double-jointed, but this is a misnomer, and is properly called digital hyperextension. [31] Gecko toes can hyperextend in the opposite direction from human fingers and toes. This allows them to overcome the van der Waals force by peeling their toes off surfaces from the tips inward.
Some species can glide, most lack eyelids, and they all can stick to any surface except Teflon. Get to know the extraordinary gecko!
If you care for a child who experiences severe nausea and vomiting — or do so yourself — you’ll want to understand everything you can about how to treat it and what to expect as time passes. Learn ...
Vomiting is when muscles in your belly, chest, neck and head work together to push whatever’s in your stomach out. This forceful expulsion of your stomach’s contents can be a symptom of many conditions. But when you’re vomiting, what you really want is a way to make it stop.
Vomiting is your body’s way of getting rid of something harmful in the stomach or a response to irritation in the gut. Learn more about what can cause you to vomit, along with treatment and ...
Bile can enter the vomit during subsequent heaves due to duodenal contraction if the vomiting is severe. Fecal vomiting is often a consequence of intestinal obstruction or a gastrocolic fistula and is treated as a warning sign of this potentially serious problem (signum mali ominis).
Motion sickness and drinking alcohol are among the many common causes of nausea and vomiting. Serious diseases can also have this effect.